67l6/88
AMBIENT WATER QUALITY CRITERIA FOB TRIBUTYLTIN - 1988
                     Prepared b7
    Center  Tor  Lake  Superior  Environmental  Studies
           University  of  Wisconsin-Superior
                  Superior, VI  54880
                     Prepared  for
         U.S.  Environmental  Protection  Agency
          Office  of  Research and Development
         Environmental Research Laboratories
                      Duluth,  MN
              N&rrag&nsett,  Rhode  Island
                   Prepared through
         Battelle Memorial  Research Institute
                   505 King ftvenue
                  Columbus. OH 43201

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                                    NOTICES
This document has been reviewed by the Criteria and Standards Division,  Office
of Water Regulations and Standards,  U.S  Environmental Protection Agency,  and
approved for distribution.

Mention of trade names or commercial products does not constitute endorsement
or recommendation for use.

This document is available to the public through the Criteria and Standards
Division, Office of Water Regulations and Standards, U.S. EPA, Washington. DC
                                        11

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                                   FOREWORD
     The Criteria and Standards Division of the Office of Water Regulation^
and Standards has instituted water quality advisories as  a vehicle  for
transmitting the best available scientific information concerning the  aquatic
life and human health effects of selected chemicals in surface waters
Advisories are prepared for chemicals for which information is needed  quicklv
but for which sufficient data,  resources, or time are not available to allow
derivation of national ambient water quality criteria.

     Data supporting advisories are usually not as extensive as required for
derivation of national ambient water quality criteria, and the strength of an
advisory will depend upon the amount, type, and reliability of the  data
available   We feel, however, that it is in the best  interest of all concerned
to make the enclosed  information available to those who need  it.

     Users of an advisory should take into account its basis and intended
uses.  Anyone who has additional information that will supplement or
substantially change an advisory is requested to make the information known to
us.  An advisory for an individual chemical will be revised if any significant
and valid new data make it  necessary.

     We invite comments to  help improve  this product.
                                       Edmund M. Notion, Director
                                       Criteria and Standards Division
                                       111

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                                 ACKNOWLEDGMENTS
Larry T  Brooke                               Robert  Scott  Carr
(freshwater contributor)                      (saltwater contributor)
University of Wisconsin-Superior              Battelle  Ocean Sciences
Superior,  WI 54880                            Duxbury,  Massachusetts


Anthony R. Carlson                            David J.  Hanson
(document  coordinator)                        (saltwater coordinator)
Environmental Research Laboratory-Duluth      Environmental Research  Laboratory
Duluth, MN 55804                              Narragansett. Rhode Island
Clerical Support:  Shelley A. Heintz
                                        IV

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                             CONTENTS








                                                               Page



Foreword            .        .              ...              i 11




Acknowledgments   .    .        .              	       iv




Tables  ...            	         vi








Introduction  	      1



Background Information  .        	      3




Acute Toxicity to Aquatic Animals 	      4



Chronic Toxicity to Aquatic Animals 	      6




Toxicity to Aquatic Plants  	      8




Bioaccumulation   	      9



Other Data       	     	     10




Unused Data    	     13




Summary	     15




Aquatic Life Advisories 	     16








References	     46

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                                     TABLES




                                                                     Page



1    Acute Toxicity of Tributyltin to Aquatic Animals       ...      18




2    Chronic Toxicity of Tributyltin to Aquatic Animals     .     .      24




3    Ranked Genus Mean Acute Values with Species Mean Acute-Chronic



      Ratios .      	        26



4.   Toxicity of Tributyltin to Aquatic Plants  	    30



5.   Bioaccumulation of Tributyltin by Aquatic Organisms  	    32



6.   Other Data on Effects of Tributyltin on Aquatic Organisms   .  .    34
                                       VI

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1ntroduction



    Organotins are compounds consisting  of  one  to  four  organic  moieties



attached to a tin atom via carbon-tin covalent  bonds.   When  there  are  fewer



than four carbon-tin bonds,  the organotin compound will  be a cation  unless the



remaining valences of tin are occupied by an anion such as acetate,  carbonate,



chloride, fluoride, hydroxide,  oxide, or sulfide.   Thus a  species  such as TBT



is a cation whose formula is (C^Hg^Sn*.   In sea  water  TBT exists



mainly as a mixture of the chloride,  the hydroxide,  the aquo complex,  and the



carbonate complex (Laughlin et al.  I986a).



    The toxicities of organotin compounds are related to the number  of organic



moieties bonded to the tin atom and to the number of carbon  atoms  in the



organic moieties.  Toxicity to aquatic species  generally increases as  the



number of organic moieties increases from one to  three  and decreases with  the



incorporation of a fourth, making triorganotins more toxic than other  forms.



Within the triorganotins, toxicity increases as the number of carbon atoms  in



the organic moiety increases from one to four,  then decreases.   Thus the



organotin most toxic to aquatic life is tributyltin (Hall  and Pinkney  1985;



Laughlin and Linden 1985; Laughlin et al. 1985).



    Organotins are used  in several  manufacturing  processes,  for example,  as  an



anti-yellowing agent in clear plastics and as a catalyst in  poly(vinyl



chloride) products (Piver 1973).  One of the more extensive  uses of  organotins



is as biocides, and it is this use that will probably contribute most



significantly to direct  release of organotins into the aquatic environment



(Hall and Pinkney  1985;  Kinnetic Laboratory  1984).



    The  U.S. Navy  (1984)  proposed application of  some paints containing TBT to



hulls of naval ships.  Such  paint formulations have been shown to be an



effective and relatively  long-lived  deterrent to  adhesion of barnacles and



other fouling organisms.  Encrustations  of  these  organisms  on  ships' hulls



                                        I

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reduce maximum speed and increase fuel  consumption.   According to the  U.S.




Navy (1984),  use of TBT paints would not only reduce fuel  consumption  by  15%




but would also increase tine between repainting from less  than 5 years to 5  Co



7 years.  Release of TBT to water occurs during repainting in shipyards when




old paint is sand-blasted off and new paint applied.  TBT  would also be



released continuously from the hulls of the painted ships.  Antifouling paints




in current use contain copper as the primary biocide. whereas the proposed TBT



paints would contain both copper and TBT.  Interaction between the toxicities



of TBT and other  ingredients  in  the paint apparently is negligible (Davidson




et al.  I986a).



    The  solubility  of TBT compounds in water is influenced by such factors as




the oxidation-reduction potential,  pH, temperature,  ionic strength, and



concentration  and composition of the dissolved organic matter (Corbin  1976).



The solubility of tributyltin oxide in water was reported to be  750 ng/L at



a  pH  of  6.6  and  31.000  /jg/L  at  a pH of  8.1  (Maguire  et al. 1983).  The



carbon-tin covatent bond does not  hydrolyze  in water (Maguire et al.



 1983,1984),  and  the half-life for  photolysis due to  sunlight  is  greater  than



89 days  (Maguire et al.  1985; Seligman  et  al.  1986).



    TBT readily  sorbs  to  sediments and  suspended solids and  can  persist  there



 (Cardarelli  and Evans  1980).  The  half-life  for desorption of TBT from



 sediments was  reported  to  be greater  than  ten  months (Maguire  and Tkacz




 1985).   TBT  had a half-life  of  about  16 weeks  in a  freshwater sediment



 (Maguire and Tkacz 1985)  and 23 weeks  in a saltwater sediment (Seligman  et  al




 1986).



    Some species of algae,  bacteria,  and fungi  have been  shown to degrade TBT



 by sequential  dealkylation,  resulting in dibutyltin, then monobutyltin,  and




 finally inorganic tin  (Barug 1981; Maguire et  al.  1984).   Barug (1981)



 observed the biodegradation of  TBT to di-  and  monobutyltin by bacteria and



                                        Z

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fungi  only under aerobic conditions  and only when a  secondary carbon  source




was supplied.  Maguire et al   (1984)  reported that a  28-day  culture  of  TBT  with




Che green alga.  Ankistrodesmus falcatus.  resulted in 7% inorganic  tin




Maguire (1986) reported that the half-life of TBT exposed to  microbial




degradation was  five  months  under aerobic conditions and 1.5  months  under




anaerobic conditions    The major metabolite of TBT in saltwater crabs,  fish




and shrimp was dibutyltin (Lee 1986).




    Elevated TBT concentrations in fresh and salt waters are  primarily




associated with harbors and  marinas  (Cleary and Stebbing 1985;  Hall  et al.




1986:  Maguire 1984.1986; Maguire and Tkacz 1985;  Maguire et al. 1982;  Salazar




and Salazar 1985b; Seligman  et al.  1986;  Unger et al.  1986; Valkirs  et al




1986;  Waldock and Miller 1983)   In  some cases the microlayer surface  of  the




water contained a much higher concentration of TBT than the water  column.




Gucinski (1986)  suggested that this  enrichment of the surface microlayer  might



increase the bioavailabi1ity of TBT.  No organotins  were detected  in the




muscle tissue of feral chinook salmon caught near Auke Bay, Alaska,  but



concentrations as high as 900 MgAg  were reported in muscle tissue of




chinook salmon held in pens  treated  with TBT (Short  and Thrower 1986a).



    Only data generated in toxicity  and bioconcentration tests on  TBTC




(tributyltin chloride), TBTF (tributyltin fluoride). TBTO (bis(tributyltin)




oxide, commonly called "tributyltin  oxide") and TBTS (bis(tributyltin)




sulfide, commonly called "tributyltin sulfide") were used  in the derivation of




the water quality advisory concentrations for aquatic life presented herein.



All concentrations from such tests are expressed as TBT, not as tin and not as




the chemical tested.   A comprehension of the "Guidelines for Deriving



Numerical National Water Quality Criteria for the Protection of Aquatic




Organisms and Their Uses" (Stephan et al. 1985), hereinafter referred  to as




the Guidelines,  and the response to  public comment  (U.S. EPA 1985a) is




                                       3

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necessarv in order to understand the following text,  tables,  and




calculations   Results of such intermediate calculations as recalculated LCSOs




and Species Mean Acute Values are given to four significant figures to prevent




roundoff error in subsequent calculations, not to reflect the precision of  the




value   The latest comprehensive literature search for information for this




document was conducted in May 1988.








Xcute Toxicitv to Aquatic Animals



    Data that may be used, according to the Guidelines, in the derivation of




Final Acute Values for TBT are presented  in Table 1.   Acute values are




available for nine freshwater species and range from 0.5 for a hydra, Hydra




sp.. to 227.4 jug/L for a mosquito, Culcx  sp.  The 96-hr LC50 of




227 4 /jg/L  reported by Foster (1931) for  the bluegill greatly exceeds all




other acute values,  including those for three other species of fish.  Foster's




48-hr EC50  for Daphnia magna  is  also much higher than the  results  of  the two




other acute tests with this  species.  Therefore, it seems  inappropriate  to  use




the results reported  by  Foster  (1981)  in  the calculation of the freshwater



Final Acute Value.



    Freshwater Species Mean  Acute  Values  (Table  1) were calculated as



geometric means  of the available acute  values,  and then Genus Mean Acute



Values  (Table 3)  were  calculated as geometric  meana of  the Species Mean Acute




Values.  Of the  eight  freshwater genera for which mean acute  values are



available,  the most  sensitive genus, Hydra,  is 20 times more  sensitive  than



the most resistant,  Culex.   The four most sensitive  genera include a hydra.



two  fishes, and  an amphipod.   The freshwater Final Acute  Value  for TBT was




calculated  to be 0 2972  fig/L using the procedure described in the



Guidelines  and  the Genus Mean Acute Values in Table  3.   This Final Acute Value




 is  lower than  the lowest freshwater Species Mean Acute Value.



                                        4

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    Tests of  the acute  toxicity  of  TBT to  resident  North  American  saltwater




species that  are useful  for deriving water quality  advisory concentrations




have been performed with 16 species of invertebrates  and  three  species  of  fish




(Table 1)   The 96-hr LC50 of O.OU68 ng/L reported by Becerra-Huencho




U984) for post larvae  of the hard  clam,  Mercenaria mercenana,  also kno*n  as




che quahog clam, was not used in the derivation of  the mean acute  value for




this species  because results of  other studies with  embryos, larvae,  and post




larvae of the hard clam (Tables  1  and 6)  cast doubt on this LC50   For




example.  Roberts (Manuscript) reported 48-hr LCSOs  of 1.13 /jg/L for embryos



and 1 65 jug/L for larvae of the  hard clam.  Laughlin et al. (Manuscript)




observed about 35% mortality of  larval hard clams exposed for eight days to




0 6 ng/L and reduced growth after 14 days in 0.025 Mg/L-   They found




that post larvae were more resistant than larvae; concentrations £ 7.5 (Jg/L




did not  reduce survival after 25 days, but 10 ^g/L caused  100% mortality.



Results  from these tests,  in which concentrations of TBT were measured, differ




markedly from the LC50 of  0.01466 jjg/L that was obtained in a test in which



the concentrations were not measured.  The LC50 reported by Becerra-Huencho



(1984) appears to be low because all other data for embryo, larval, and




post-larval clams, mussels, and oysters indicate that acutely lethal



concentrations are  in the  range of 0.6 to 4.0 /ig/L.



    Except for  the  LC50  reported by  Becerro-Huencho (1984), the range  of acute




toxicity to saltwater animals is a  factor of about 670.  Acute  values  range



from 0.42 /ig/L  for  juveniles of the  mysid, Acanthomysi3  sculpta {Davidson




et  al. 1986a,b)  to  282.2  jjg/L for  adult Pacific  oysters,  Crassostrea gigas




(Thain 1983).   The  96-hr  LCSOs  for  three  saltwater fish  species range  from



1.460 ng/L for  juvenile  chinook salmon, Oncorhynchus  tshawvtscha  (Short and




Thrower  1986b)  to  23.36  m/L  for adult mummichogs, Fundulus heteroclitus




(EG&G  Bionomics  1976).




                                       5

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    Larval  bivalve molluscs and juvenile crustaceans appear to be much more




sensitive than adults during acute exposures.   The 96-hr LC50 for larval




Pacific oysters was 1.557 ng/L, whereas the value for adults was



232,2 ng/L (Thain 1983)   In renewal tests, the 96-hr LCSOs for larval and



adult blue mussels, Vtvtitus eduhs. were 2.238 and 36.98 /ug/L, respectively




(Thain 1983)   Juveniles of the crustaceans Acanthomvsis sculpta and



Metamvsidopsis elongata were slightly more sensitive to TBT than adults



(Davidson et al.  1986a.b; Valkirs et al. 1985; Salazar and Salazar,




Manuscript).



    Genus Mean Acute Values are available  for 18 saltwater genera and range



from 0.61 //g/L for Acanthornvsis to  204.4 ptg/L for Ostrea (Table 3).



Genus Mean  Acute  Values  for the 11  most sensitive genera differ by a  factor of



less than four.   Included  within  these  genera are four  species of molluscs,



six species  of crustaceans, and two species of fish.  The  saltwater Final




Acute Value  for TBT  was  calculated  to  be 0.5313 Mg/L  (Table  3), which  is



lower than  the  lowest  saltwater Species Mean  Acute  Value.








Chronic  Toicictty  to  Aquatic Animals



    The  available data  that are usable according  to the Guidelines concerning



the chronic  toticity of  TBT are presented  in  Table  2.   Brooke et  al.  (1986)



reported that  the survival  of  Daphnia  magna was  40% at  a TBT concentration of



G.5 MgA, and  100% at  0.2  ^ig/L.   The mean  number  of young  was reduced



30% by 0.2  /Jg/L,  and was reduced  6% by O.I ng/L.  The chronic value for



Daphnia  magna  was calculated  to be  0.1414  pg/L,  and the acute-chronic ratio




was 30.41.



     In an early  life-stage test with the  fathead minnow,  Pimephales promelag.




all  fish exposed  to  2.20 ug/L died during  the test  (Brooke et al.  1986).



Survival was reduced by 2% at a  TBT concentration of 0.92 ng/L,  but was



                                        6

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higher than in the controls at 0.45 pg/L and lower concentrations.   The




mean weight of the surviving fish was reduced 4% at 0.08 /ig/L.  9% at



0 15 pg/L,  257. at 0.45 ng/L. and 48% at 0.92 jug/L.   The mean biomass



at the end of the test was higher at 0 08 and 0 15 ng/L than in the



controls,  but was reduced by 13 and 52^ at TBT concentrations of 0 45 and



0 92 ug/l.  respectively   Because the reductions in weight were small and



the mean biomass increased at 0.08 and 0.15 pg/L,  the chronic limits are



0 15 and 0 45 jJg/L.   Thus the chronic value is 0.2598 ng/L and the



acute-chronic ratio is 10.01.



    Life-cycle toxicity tests have been conducted with the saltwater mysid.



Acanthomvsis sculpta (Davidson et al. 1986a,b) and the sheepshead minnow,



Cvprinodon variegatus (Ward et al. 1981).  The effects of TBT on survival,



growth, and reproduction of A. sculpta were determined in four separate  tests



lasting from 28 to 63 days.  The  number of juveniles released per female at a



TBT concentration of 0.19 ng/L was 50% of the number released in the



control treatment, whereas  the number released at 0.09 M8/L was higher than



in the control treatment    The data concerning the effects of TBT on survival



and growth are not easy to  interpret.  At concentrations  from 0.08  to



0.27 MgA. survival and weight were  sometimes equal  to or better than in



the control  treatment, but  at  concentrations of 0.38 pg/L and above,



survival and weight were  always  reduced  by  at  least  23%.  The chronic value  is



0 1308 ng/L, and  the acute-chronic  ratio  is  4.664  (Table  2).



    In the life-cycle  test  conducted  with  the estuarine  fish Cvprinodon



van eeatus (Ward  et al.  1981), mean measured concentrations  were 240 to 300%



of the nominal concentrations  in the  first  34 days and  45 to  112%  of nominals



 in the remainder  of this  177-day test.   In  the  same  publication, measured



concentrations were 18 to  32%  of  nominals  during  a 21-day lethality test and



80% of nominal during  a  bioconcentration  test.  No data  were  used  from  this



                                        7

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publication because the various ratios of the measured and nominal concen-




trations of TBT in the different tests suggest that problems existed in the



delivery of TBT or in the analytical chemistry or both.




    The Final Acute-Chronic Ratio of 11 24 was calculated as the geometric



mean of the acute-chronic ratios of 30 41 for Daphnia magna. 10.01 for



Pimejahales oromelas. and 4 664 for Acanthomysis scujjtta.  Division of the




freshwater and saltwater Final Acute Values by 11,24 results in freshwater and



saltwater Final Chronic Values of 0.02844 and 0.04727 ftg/L,  respectively



(Table 3).  Both of these Final Chronic Values are below the eiperimenrally



deternuned chronic values




    Unacceptable effects on commercially  important saltwater molluscs occurred



at TBT concentrations  less than 0.04727 jjg/L  (Table 0).   Growth or



development of the Pacific oyster. European  flat oyster, and hard clam was




reduced at 0.023,  0 019, and 0.025 ftg/l.  respectively.  A TBT concentration



of 0.047 pg/L was  lethal to larval C.  gigas.  Because adverse effects on



important  saltwater species have been  documented to occur at concentrations as



low as 0.019 pg/L, the saltwater Final Chronic Value  is lowered to



0.010 ng/L to adequately protect these  important species.








Toxicitv to Aquatic Plants



    Planck et al.  (1984) reported the  concentrations  of TBT that  prevented



growth of  thirteen freshwater  algal  species  (Table 4).  These concentrations



ranged from 56.1 to 1,762 ;tg/L,  but  moat  were between 1QQ and 250 ;ig/L.



No data are available  on the effects  of  TBT  on freshwater vascular  plants.



    Toxicity tests on  TBT  have been  conducted with five  species  of  saltwater



phytoplankton  including  the green  alga,  Punattell a sp.;  the diatoms,



Phaeodactvlum  tri eornutum. Skeletonema costatum.  and  Thallassiosira



pseudonana:  and  the dinof1agellate,  Cvmnodiniufn  solendens (Tables 4 and 6)



                                        8

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The 14-day EC50 of 0.06228 jig/L for S.  costatum (EG4G Bionomics 198lc)  was




Che lowest value reported, but Thain (1963) reported that a measured




concentration of 0.9732 pg/L was algistatic to the same species (Table  4).




The 72-hr ECSOs based on population growth ranged from approximately 0  3 to




> 5.8 fig/L (Table 6)   Lethal concentrations were generally more than an




order of magnitude greater than ECSOs and ranged from 1.460 to 13.82 pg/L.




Identical tests conducted on tributyltin acetate, tributyltin chloride,




tributyltin fluoride, and tributyltin oxide with S.  costatum resulted in ECSOs




from 0.2346 to 0.4693 /jg/L and LCSOs from 10.24 to 13.82 pg/L (Walsh et



al. 1985).




    & Final Plant Value, as defined  in the Guidelines, cannot be obtained




because no test in which the concentrations of TBT were measured and the



endpoint was biologically important  has been conducted with an  important




aquatic plant species.  However, the available data  indicate that freshwater



and saltwater plants will be protected by concentrations that adequately



protect freshwater and  saltwater animals.








Bioaccumulation




    Maguire et al.  (1984) obtained bioconcentration  factors (BCF) of 253  to




467 with the freshwater green alga,  Ankistrodesmus falcatus (Table 5).




    The extent to which TBT  is accumulated by  saltwater  animals  in tests



lasting 28 days or more has  been investigated  with three species of  bivalve



molluscs (Table 5).  Thain and Wai dock (1985)  reported a BCF of  6,833 for  the



soft parts of blue mussel spat exposed to  0.24 jig/L  for  45 days.




The highest BCF reported  for a saltwater  species was  11,400 for  the  soft  parts




of the Pacific oyster exposed to a TBT concentration  of  0.1460  fjg/L  for 56




days (ffaldock and Thain 1983).  A BCF of  6,047 was observed for  the  soft  parts



of the Pacific oyster exposed to 0.1460 ng/L  for 21  days (Waldock et al.



                                       9

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1983).   The lowest steady-state BCF reported for a bivalve was 192.3  for  the




soft parts of  the European flat oyster.  Ostrea edulis.  exposed to a TBT




concentration of 2.62 pg/L for 45 days (Thatti 1986;  Thain and Waldock




1985)



    No U.S. FDA action level or other maximum acceptable concentration in




tissue, as defined in the Guidelines, is available for TBT, and,  therefore,  no




Final Residue Value can be calculated.








Other Data



    \ddit\onil  data on the  \eth*V  and sublethal effects of TBT on aquatic



species are-presented in Table 5.  Foster (1981)  reported  a 24-hr EC50 of



1,990 fig/L  for  larvae of the  claa, Corbicula  fluminea.  This  value is much



higher  than the acute values  reported by Foster (1981)  for Daphnia magna and



the  bluegill.  which  were themselves  considered  unusually  high.   Meador (1986)



reported  that  a TBT  concentration of 0.45 jig/I  affected the  behavior  of



Daphnia magna  in an  8-day  test.   Exposures  of 24  and  48 hr resulted  in LCSOs




of  25.2 and  18.9 Mg/L *»th rainbow trout, Salmo gairdneri  (Alabaster



1969).  Seinen et al.  (1981)  exposed rainbow trout  to  0.18 fig/L  for  110



days  and  observed a  20%  reduction in growth.   Laughlin and Linden  (1982)  found




little  difference in the  toxicities  of  TBTF and TBTO  to embryos  and  larvae  of




the  frog,  Rana temporaria.



     The most  unusual  effect of TBT on saltwater animals is the superimposiCion



of  male characteristics  on female stenoglossan gastropoda.  This phenomenon.



 termed "imposes," can result in females with a penis,  a duct leading to  a



deferens,  and the convolution of the normally straight oviduct (Smith 1981)



 Exposure  of N.  lapil tus  to 0.05 /jg/L in a laboratory for  four months



 produced  a 41% incidence of  imposes (Bryan et al. 1986).  Laboratory tests



 with N. obsoletus and two TBT formulations also  resulted  in  imposex but



                                        10

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exposure conditions were not stated (Smith 1981).   TBT has been linked to




imposex in field populations of Nucella lapiI lus.  Vassarius obsoletus.




N'assarius reticulatus.  and Ocenebra ermacea  (Bryan et al   1986,  Durchon 1982.



Smith 1981).   Imposex has been associated with reduced reproductive  capacity



and altered density and population structure  in field populations of V



lapiIlus (Bryan et al  1986} but not of N. obsoletus (Smith 1981)   Transfers



of snails between clean sites and marinas contaminated with TBT demonstrated  a



relationship between the degree of imposex and the concentration of  TBT in



tissue, which suggested that snails exposed to as little as 0.0024 /ig/L



might be affected (Bryan et al  1986)



    Reproductive abnormalities have also been observed in the European flat



oyster  (Thain 1986).  After exposure for 75 days to a TBT concentration of



0 24 pg/L, a retardation  in the sex change from male to female was observed



and larval production was completely inhibited.  A TBT concentration of



2 6 Aig/L prevented development of  gonads.



    Survival and growth of  several commercially important  saltwater bivalve



molluscs have been studied  during  acute and long-term exposures  to TBT.



Mortality of larval  blue mussels.  Mvtilua edulis. exposed  to 0.0973 pg/L



was 51%; survivors were moribund and stunted (Beaumont and Budd  1984).  Growth



of juvenile blue mussels was significantly reduced after  7 to 66 days at 0.31



to 0 3893 ug/L  (Stromgren and  Bongard  1987; Vatkira et al. 1985).  The



66-day  LC50 for 2.5  to  4.1  cm  blue mussels was 0.97 ug/L  (Valkirs et al.



1985,1987).  Growth  of  hard clams  from fertilization to metamorphosis was



reduced by 0.025 ug/L (Laughlin et al  Manuscript).  The  number  of  larvae



of the  Pacific  oyster,  Crassostrea giaas. that developed  and the number of



spat that set were reduced  in  21-day exposures to  0.02346  /ig/L  (Springborn



Bionomics I984a).  Alzieu et al   (1980)  reported  30% mortality  and  abnormal



shell  thickening among  Pacific oyster  larvae exposed  to 0.2 ug/L for  113



                                       11

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days.   Abnormal  development was also observed in exposures  of  embryos  Tor  24




hours  or less to TBT concentrations > 0.8604 ng/L (Robert  and  His  1981).



Waldock and Thain (1983) observed reduced growth and thickening of  the  upper



shell  valve of Pacific oyster spat exposed to 0 1460 vg/L  for  56 days.



Abnormal shell development was observed in an exposure  to  0.77 ng/L that



began  with embryos of the eastern oyster,  Crassostrea vi rginica.  and lasted




for +8 hours (Roberts, Manuscript).  Adult eastern oysters  were also sensitive



to TBT with reductions in condition index after exposure  for 57 days to



> 0.1  ng/l (Henderson 1986; Valkirs et at. 1985).  Thain  and Waldock (1985)



observed a significant reduction in growth of small spat  of the European  flat



oyster, Ostrea eduli s. exposed for 20 days to a TBT concentration of



0.01946 /ig/L.  Growth of larger spat was marginally reduced by



0.2392 MgA (Thain 1986; Thain and Waldock 1985).



    Long-term exposures have been conducted with a number of saltwater



crustacean species.   Davidson et al. (I986a.b), Laughlin et al. (1983,1984b),



and Salazar and Salazar (1985a) reported  that TBT acts slowly on crustaceans



and that behavior might be affected several days before mortality occurs.



Survival of  larval amphipods. Gammarus oceanicus. was significantly reduced



after  eight weeks of  exposure to TBT concentrations  > 0.2818 fig/I  (Laughlin



et al.  I984b).  Developmental rates and growth  of  larval mud crabs.



Rhithropanopeus harri sii.  were  reduced by a  15-day exposure to .>



14.60  Mg/L-   R. harrisii might  accumulate more  TBT via ingested food than



directly from water  (Evans and  Laughlin  1984).   TBTF, TBTO, and TBTS were



about  equally toxic  to  amphipods  and  crabs  (Laughlin et al. 1982,1983.



1984a).



    Exposure  of embryos  of the  California grunion,  Leuresthes  tenuis.  for ten



days  to 74 ng/L caused  a  50% reduction  in hatching  success (Newton et  al.



1985).  At TBT  concentrations  between  0.14 and  1.72  pg/L,  growth,  hatching



                                       12

-------
success,  and survival  were significantly enhanced.   Juvenile  Atlantic




menhaden,  Brevoortia tvrannus.  avoided a TBT concentration of 5.437



and juvenile striped bass. Morone sa^ati 1 is.  avoided 24.9  ng/L (Hall  et  al.



1984)   BCFs were 4.300 for liver,  1.300 for brain,  and 200 for muscle  tissue



of chinook salmon,  Qncorhvnchus tshawvtscha.  exposed to 1.490 ng/L for  96




hours (Short and Thrower I986a,c)








Unused Data



    Some data concerning the effects of TBT on aquatic organisms were not  used



because the tests were conducted with species that are not resident  in North



America (e g.,  Allen et al  1980; Carney and Paulini  1964;  Danil'chenko 1982:



Deschiens and Floch 1968: Deschiens et al. 1984,1966a,b; de Sousa and Pautini



1970; Fnck and DeJimenez 1964; Hopf and Muller 1962; Nishuichi and Yoshida



1972. Ritchie et al  1964; Seiffer and Schoof 1967;  Sniff et al.  1975;  Tsuda



et al  1986; Upatham 1975; Upatham et al. 1980a.b; Webbe and Sturrock 1964)



     Alzieu  (1986),  Cardarelli  and Evans (1980), Cardwell and Sheldon (1986),



Cardwell and Vogue  (1986). Champ (1986), Chau (1986).  Envirosphere Company



(1986), Good et  al. (1980). Guard et  al.  (1982), Hall  and  Pinkney (1985).



Hodge et al. (1979).  International Joint  Commission  (1976),  Jensen (1977),



Kimbrough  (1976),  Kumpulainen  and Koivistoinen  (1977),  Laughlin  (1986),



Laughlin and Linden (1985), Laughlin  et al.  (1984a),  McCullough  et al.  (1980).



Monaghan et  al.  (1980),  North  Carolina  Department of  Natural  Resources  and



Community  Development  (1983,1985), Seligman  et  al.  (1986), Slesinger and



Dressier (1978).  Stebbing (1985), Thayer  (1984),  Thompson  et al.  (1985),  U  S



EPA  (1975,19856),  U.S.  Navy  (1984). Valkirs  et  al.  (1985). von Rumker  et  al



(1974), and  Walsh  (1986)  compiled data  from  other sources.



     Results  were  not  used when the  test procedures,  test  material, or  results



were  not adequately described  (e.g.,  Chau et al.  1983;  Danil'chenko  and



                                        13

-------
Buzinova 1982;  de la Court 1990:  Deschiens 1968;  EGicG Bionomics 198lb:  Filenko




and Isakova 1980; Holwerda and Herwig 1986;  Kolosova et al.  1980;  Laugh!in




1983, Lee 1985; Nosov and Koloaova 1979,  Stroganov et al.  1972.1977)   Results




of some laboratory tests were not used because the tests were conducted in




distilled or deionized water without addition of appropriate salts (e g ,  Gras




and Rioux 1965. Kumar Das ec al.  1984).   The concentration of dissolved oxygen




was too low in tests reported by EG&G Bionomics (1981a).  Douglas et al




(1986) did not observe sufficient mortalities to calculate a useful LCSO.




    Data were  not used when TBT was a component of a formulation, mixture,




paint, or sediment (Cardarelli 1978; Deschiens and Floch 1970; laughlin et al



1982; Maguire  and Tkacz 1985; North Carolina Department of Natural Resources




and Community  Development 1983; Pope 1981; Quick and Cardarelli 1977; Salarar




and Salazar I985a,b; Santos et al. 1977;  Sherman 1963; Sherman and Hoang  1981;




Sherman and Jackson  1981; Walker 1977; Weisfeld 1970), unless data were



available to show that the toxicity was the  sane as  for TBT alone.




    Data were  not used when the test organisms were  infested with  tapeworms



(e.g., Knath 1970).  Mottley  (1978) conducted tests  with a mutant  form of an



alga.  Results of tests  in which enzymes, excised or homogenized  tissue,  or




cell  cultures  were  exposed to  the  test material were not used  (e.g., Blair  et



al   L9B2).  Tests conducted with too  few  test organisms were  not  used  (e.g.,



EG&G  Bionomics 1979; Good et  at.  1979).   High control  mortalities  occurred  in




tests reported by Salazar and Salazar (Manuscript)  and Valkirs et  al.  (1985)



Some  data  were not  used  because  of  problems  with  the concentration of  the test



material  (e.g.,  Springborn  Bionomics  lS84b;  Stephenson et  al.  1986;  ffard  et



al.  1981).   BCFs were  not used when the  concentration of  TBT in the test



solution  was  not measured (Laughlin and  French,  Manuscript;  Laughlin et al.




19866).

-------
Summary



    The acute toxicity values for eight freshwater animal  species range from




0 5 ng/L for a hydra to 10.2 pg/L for a mosquito.   Chronic toxicity tests




have been conducted with two freshwater animals   Reproduction of Daphnia




was reduced by 0.2 ng/L. but not by 0 1 ng/L, and the  acute-chronic




ratio was 30.41   Weight of fathead minnows was reduced by 0.45 fig/L,  but




not by 0 15 pg/L, and the acute-chronic ratio for this species was 10.01




Growth of thirteen species of freshwater algae was inhibited by concentrations




ranging from 56.1 to  1.782 ng/L.



    Acute values for  19 species of saltwater animals range from




0.61 /ig/L for th« mysid, Acanthomvsia sculota. to 204.4 ng/L for adult




European flat oysters, Ostrea edulis.  Acute values for the eleven most  sen-




sitive genera, including molluscs, crustaceans, and fishes, differ by  less  than




a factor of 4.   Larvae and juveniles appear  to be more sensitive than  adults.



A life-cycle toxicity test has  been conducted with the saltwater mysid,



Acanthomvsis sculota.  The chronic value for A. sculpta was 0.1308 pg/L




based on reduced reproduction and  the acute-chronic ratio was  4.664.



    Bioconcentration  factors for three species of bivalve molluscs range  from




192.3 for soft parts  of the  European flat  oyster  to 11,400 for  soft parts of



the Pacific oyster, Crassostrea eieas.   Imposes,  which is the  superimposition



of male characteristics on female  stenoglossan gastropods, occurred among




Nucella laoiIlus exposed to  0.05 /ig/L  in the laboratory and might  occur  in



field-exposed  snails  at 0.0024  ng/L.   For  some species of  snails  imposes has



been  associated  with  reduced reproductive  potential  and population density,



particularly  in  the  vicinity of marinas.   Growth  or  development was  reduced at




0.023 tig/I  for Crassostrea  gigas.  0.019  ng/L for  Ostrea




eduli s. and 0.025  fig/L for  Mercenaria  mercenaria.   A  TBT  concentration of




0.047  yg/L  was  lethal  to  larval C.  gigas.




                                        IS

-------
National  Criteria




    The procedures described in the "Guidelines for Deriving Numerical




National  Water Quality Criteria for the Protection of Aquatic Organisms  and



Their Uses" indicate that,  except possibly where a locally important  species




is very sensitive, freshwater aquatic organisms and their uses should not  be




affected unacceptably if the four-day average concentration of Tributyltin




does not exceed 0 0264 ng/L more than once every three years on the average




and if the one-hour average concentration does not exceed 0.149 pg/L  more



than once every three years on the average.




    The procedures described in the "Guidelines for Deriving Numerical




Vational  Water Quality Criteria for the Protection of Aquatic Organisms  and



Their Uses" indicate that,  except possibly where a locally important  species



is very sensitive, saltwater aquatic organisms and their uses should  not be




affected unacceptably if the four-day average concentration of tributyltin



does not exceed 0.010 pg/L more than once every three years on the average




and if the one-hour average concentration does not exceed 0.28S ng/L  more



than once every three years on the average.








Implementation




    &s discussed  in the Water Quality Standards Regulation (U.S. EPA 1983a)



and the Foreword  to this document, a water quality criterion for aquatic  life



has regulatory  impact only after  it  has been  adopted  in a  state water quality



standard.  Such a standard specifies a criterion  for  a pollutant that is



consistent with a particular designated use.   With the concurrence of the U.S



EPA, states designate one or more  uses for each body  of water  or segment



thereof and adopt criteria that  are  consistent  with  the use(s)  (U.S.  EPA



1983b,1987).   In  each standard  a  state may adopt  the  national  criterion,  if



one exists, or  if adequately justified, a site-specific criterion.



                                       IS

-------
    Site-specific criteria may include not only site-specific criterion




concentrations (U.S.  EPA 1983b),  but also site-specific,  and possibly



pollutant-specific,  durations of  averaging periods and frequencies of allowed



excursions (U.S.  EPA 1985c).   The averaging periods of "one hour"  and "four



days  were selected by the U S.  EPA on the basis of data  concerning how



rapidly some aquatic species react to increases in the concentrations of  some



pollutants, and "three years" is  the Agency's best scientific judgment of the



average amount of time aquatic ecosystems should be provided between



excursions (Stephan et al. 1985;  U.S. EPA 1985c).   However, various species



and ecosystems react and recover at greatly differing rates.  Therefore,  if



adequate justification is provided, site-specific and/or pollutant-specific



concentrations, durations, and frequencies may be higher or  lower than those



given  in national water quality criteria  for aquatic  life.



    Use of criteria, which have been  adopted in state water  quality  standards,



for developing water quality-based  permit  limits  and  for designing waste



treatment  facilities requires selection  of an  appropriate  wasteload  allocation



model.  Although  dynamic  models  are  preferred  for the application of  these



criteria  (U.S. EPA  1985c),  limited  data  or other  considerations might require



the use of  a  steady-state  model  (U.S.  EPA 1986).   Guidance on  mixing zones  and



the design  of  monitoring  programs  is  also available  (U.S.  EPA  I985c,  1987)
                                        17

-------
                                              Table I   Acute Toiieily  al  Tnbutyltie  la Aquatic Aeiarals
oo
Species Met bad*
Hydro. S. y
Hydra sp
Annelid (9 ng). f. U
Lumbricul us voriegotus
Cladoceran. S, U
Dophnio noano
Cladoceran (adult). S. U
Dophnio aaano
Cladoceran (<24 hr). (. U
Pophnio agqno
Aoiphipod. f. *
Connor us oseudol ianaeus
Mosquito (larva). S. M
Cule» sp
Raiobov Irout (juvenile). f. H
So lao ggirdneri
fat head ainooi (juvenile), f. U
Piaapbales prone las
Channel catfish f. H
( juveni le) .
Ictolurus ounctolus
Bluegill. S. U
1 .. pnmi s mo croc lii rui
Hgrdeess LC50
(•g/L as ar CC50
Cbe.icelb C«COT) Ifia/Llc
FBtSHWATtB SPECIES
TBTO 51 0 05
(961)
TBTO 51 8 54
(96X)
TBTO - 66 3d
TBTC - 5 26
TBTO 51 5 43
(96Z)
TBTO 51 8 37
(961)
TBTO 51 5 10 2
(96X)
TBTO 50 6 39
(96Z)
TBTO 51 5 26
(96Z)
TBTO SI 8 55
(96Z)
TBTO - 227 «d
Species Heae
Acute Value
(jia/Lt

0 5
5 4
-
-
4 3
3 7
IQ 2
3 9
2 6
S 5
-
                                                                                                                              Reference
                                                                                                                              Brooke et al  1986
                                                                                                                              Brooke et al   1986
                                                                                                                              foster I9BI
                                                                                                                              Ueador 1986
                                                                                                                              Brooke et ol  1986
                                                                                                                              Brooke et al  1986
                                                                                                                              Brooke el al  1986
                                                                                                                              Brooke «t ol  1986
                                                                                                                              Brooke et al   1986
                                                                                                                              Brooke «t  al   1986
                                                                                                                                     1981

-------
Table I   (coetieued)
Species
                           Hotbed"      Chemical'
Polychaete (juvenile). S. U
Neanthes arenacaodentata
Polychoete (adult). S. U
Neanthes arenaceadentata
Blue aussel (larva). R. -
Hvtilus edulis
Blue mussel (adult). 8. -
Hvlilus edulis
Blue mussel (adult). S. U
Mvtilus edulis
Pacific oyster (larva). R. -
Crossestreo oigos
Pacific oyster (adult). R. -
trossostreo qiaos
Coslera oyster (embryo). S. U
Crassastrea virainico
(astern oyster (embryo). R. U
Crassostrea virainica
TBTO
TBTO
TBTO
TBTO
TBTO
TBTO
TBTO
TBTO
(95X)
TBTC
(astern oyster (embryo).    R.  U
Crassostreo virainico
TBTC
Salinity
(a/tot
SALTVATCi SPECIES
13-34
33-34
-
-
33-34
-
-
22
18-22
18-22
LC50 Species Mean
or EC50 Acute Valve
(,ia/L»e (ua/Lt
6 812
21 4le 6 812
2 238
36 98*
34 06* 2 238
1 557
282 2* 1 557
0 8759
1 30
0 71
                                                                        Reference
                                                                                                                  Salatar  and  Salazar.
                                                                                                                  Manuscript

                                                                                                                  Salazar  and  Salazar.
                                                                                                                  Manuscript

                                                                                                                  Ihain  1983
                                                                                                                  (ham  1983
                                                                                                                  Salazar and Salazar.
                                                                                                                  Uanuscn pt

                                                                                                                  Thain 1983
                                                                                                                  Thain 1983
                                                                                                                  [GIG Biononics
                                                                                                                  1977

                                                                                                                  Roberts,  yanuscript
                                                                                                                  Roberts,  yanuscript

-------
Table I   (continued)
Spec i es
[astern oyster
Cr ossostrea virainica
European flat oyster
(adult).
Os tr ea edul is
Herd clam
(post larnj),
Hercenana «ercenar I o
Hard clam (eoibryo) .
Mercenoria aercenafia
Herd clan (larva).
t>J Mercenaria oerceoaria
O -
Copepod (juvenile),
Curvlenor« effijils
Copepod (adult).
*cart la louse
Copepod (adult).
Hitocra Sfiaioes
Copepad (adult).
Hiiacr a spinipes
Mysid (juvenile).
Aconthomvsis scul Die
Salinity
Method" Cbe«iealU fa/ka)
R. U TBTC 18-22
8. - TBTO
S. U TBTC
R. U TBTC 16-22
R. U TBTC 18-22
F. 11 TBTC IQ 6
«. U TBTO
(951)
S. U TBTT 7
S. U TBTO 7
R. U f
LC50 Species Mean
or [C50 Ac.te Value
|uo/l»c fua/Lt
1 96B 0 9116
204 4 2U4 4
0 OI46641
1 11
1 65 1 165
22 22
0 6126 0 6126
1 877
1 946 1 91 1
0 42
Reference
Roberts. Manuscript
Thain 1981
Secerra-Hnencdo 1984
floberl-s. Uamsirip!
Roberts. Uanuscnpt
Hall e* el 1987
U'ren 1981
Linden et al 1979
Linden el at 1979
Davidson el ol 1 986o
Uysid (juvenile).
ftconlhonnsts scul nta
r.  u
                                                                              0 61
                                                                                                                    l/oll.rs  et  al   1965

-------
Table I. (continued)
Sal iaity
Species Method0 Chee>icalb (g/ka)
Uysid (adult). f. U f
Aconthomvsis sculpto
yysid (juvenile). S. U TBTO 33-34
Metamvsidopsis elonqoto
Uysid (subodult). S. U TBTO 33-34
Metomvsidopsis elongoto
Uysid (adult). S. U TBTO 33-34
Metemysidopsis elonqoto
Uysid (adult). S. U TBTO 33-34
UelomvsidoDsis elcnaoto
Aaphipod (adult). R. H TBTO 30
Orchestic troskiono
Anphipod (adult). R. U TBTf 30
Orchestic troskiana
American lobster (larva). R. U TBTO 32
Honiorus oner I c onus
Shore crab (larva). R. - TBTO
Corcinus acenas
Vud crab (larva). R. U TBTS IS
Rhi throoonopeus herrisi i
LC50 Species Heaa
or CCSO Acute Value
(ua/L)c (ua/Ll
1 66* 0 61
<0 9732
1 946a
6 812*
2 433* <0 9732
>I4 609
>I4 089 >I4 60
1 745^ 1 745
9 732 9 732
34 909
Reference
Volkirs et al 1985
Salaiar and Salazar.
Manuscript
Salazar and Salazar.
Manuscript
Salazar and Salazar,
Manuscn pt
Salazar and Salazar.
Manuscn pt
Laughl in et al 1982
Laughl in et al 1 982
Laughlin and French I960
Thoin 1983
Laughl in et al 1983
Mud crab (larva).
Rhithroponopeus harrisii
R.  U
TBTO
                                15
                                  >24  39
                                                                                           34 90
Laughlin et al  1983

-------
         Table I. (coetieued)
         Species                    Method*

         Shore crab (larva).        R.  U
         Heaiqrapsus nudus
                                        Chemical*
                                          TBTO
Selieit*
 U/tal

 32
                                                                                     LC50
                                                                                    or CCSO
83 2B»
Species Mean
Acute Vain*
   (na/Ll

  8J 28
•eference

Laugh!in and Trench  1980
ro
ro
Sheepsheod ainnoi          S,  U
(juvenil«),
Cyprinodon vorienotus

Sheepsheod uinno*          S.  U
(juveeile).
C»pfiaodon vorieootus

Sheepsheod mono*          S.  U
(juveai)•).
Ctprmodoe voriegotus

Sheepshead Biano*          (.  U
(Jl-49 o»),
C»prinodoa »arieaatus

yuaaiichag (adyll).         S.  U
fundulus haterocli tus

Cbiaoak sal BOB (juvenile),  S.  U
Oncorh^ocbus tsha»»tscho
                                                   TBTO
                                                   TB10
                                                   TBTO
                                                   TBTO
                                                   TBTO
                                                   (951)

                                                   TBTO
                                                           20
 20
 20
                                                                  28-32
                                                                   25
 28
                   16 54
16 54
12 65
                    2 315*
                   21 36
                    I  460
                2 315
               23 36
                I  460
                                      CC1C Bionomcs 1979
                         CG4C Bionooics  1979
                                                                                                                           CGIC Bionomics  1979
                                                                                                                           [CtC Bionomics  !9Bld
                                                                                                                           CC4C Bionomics  1976
                         Short ond Throier  I986b
         0 S = static.  R = reneial.   f  =  (laa-thraugh.  U > ••osured,  U = uneieasured

         b TBTC = tributfltia chloride.  TBTf  =  tributyltia fluoride. TBTO = tributyltin oxide.  TBTS - tributyltin sulfide   Percent purity
           is given in parentheses ibeo  available

         c Concentration of the tributyllin cation, not the chemical   IT the concentrations were not measured and Ihe
           published results «ere nol  reported  to be adjusted for purity, the published results iere multiplied by the purity  il  il
           •as reported to be less than  95Z

-------
Table I  (collided)


d Value not used ia determination of Species Mean Acute Value (see text)

* Value not used la determination of Species Mean Acute Value because data  are available for  a aore  sensitive life

' The test organises core exposed to leachote from paaels coated »ilh onlifouling paint  containing a tributyltin
  polyeiar and cupraul a«lde.  Concentrations of IBT >ere measured and the authors provided data  to demonstrate the
  similar toiicity of a pure TBT compound and the TBT froo the paint  fornulalion

9 LC5Q or CCSO calculated or interpolated graphically based on the authors   data

-------
                            Table 2   Chroeic Toiicity of Tritutv.lt i* te Azotic Aei
Specie*                  Ta»ta
Cladoc«raa.                 LC
Oaphnia nmana

fathead ninnoi,             CIS
Pimephales promelas
Cbeaicol*
  TBTO
  (961)

  TBTO
  (961)
                  Hardeess
                  (•g/L as         Linits
                                                            SPfCIES
                                                             51  S
SI  5
                                                                            0  1-0 2
               0 15-Q 45
                                                                                        Ckroiic Value
                                                                                             0 1414
                                U 2598
                                             »efere»c«
                                                                                                          Arooke el  al   I486
                                             Brooke el al  1986
Hysid.
iconthaosis scul ola
                           LC
                                                 S»LTW«TIB  SPCCICS
                                                                            0 09-0 19
                                                                                             0 1308
                                                                 Davidson el al   )9B6e,b
" 1C = life-ejcle er partial  lira-cycle.  CIS  =  aarly  life-stage

b TBTO = tribulyltin oiide   Percent  purity  is  givaa  la  poreplheses  ib«n  available

c Measured coecentraiioos  of  the tributyltin  calion

d The test argooisas ware  en posed to  leachat* from panels  caoted  eith  ontifauling paint  containing  a  tnbulyltin
  polyaer and typraus and*   Concent rat ions  of TBT .ere •ensured and  Ibe avlkors provided  data la  denoostrale the
  jiailar taxicity of a pure  TBT compound and the TBT  fro« the paint foraulalion

-------
                                    Table 2  (cotliiued)

                                                                     *cu>e-CI>ro«ic Botio
                                                                Harness
                                                                (•9/L  as       Acute Valee      Chroeic Waive
Sveciea CoCO.) (ua/Ll
Cladeceran. 51 5 43
OoDhnlo aogno
Fathead •iaaoe. 51 5 26
Piaephales promelos
Uysid. - 0 61°
Acanlhoovsis sculnta

(ua/l) Ratio
0 1414 30-41
0 2598 10 Ul
0 1308 4 66'
                                    0  Reported  by  Valkirs  et  al   (I985a)
Ul

-------
                                     I obi* J.   Ranked Genus Heat Acute Values •ilk Species Mean Acute-Chronic Ratios

                                         Ceeiis tteee.                                    Species Heae           Species Mean
                                         Acute Heine                                   Acute Value            Acute-Cheat ic
                         Ro»ta              (m/ll           Species                       tinJO*                   Ratio6

                                                                               seccits
                           B                10 2            Mosquito.                       10 2
                                                            Cul«« sp

                           1                 55            Channel  catfish.                55
                                                            let ol urus punclot us

                           6                 54            Annel id.                        34
                                                            Lumbriculus van taotus

                           5                 41            Clodoceron.                     * 1                   iU  41
                                                            Doahnio  ma an a

10
cr>                         4                 3 9            Rainboe  trout.                  39
                                                            Sol mo aairdner i

                           i                 J 7            Aaphipod.                       J 7
                                                                arus pseudol imnqeus
                                             2 6            falkead mianon.                 26                   10  Ul
                                                            PimephaJes proinelos

                                             0 5            Hydra.                           0 5

-------
Table 1   (caatieued)

                Genus Ueee                                    Species  Mean           Species  yean
                Acete Velue                                   Aeule Value            Acute-Chronic
Bonk"             (u«/U           Species                       lua/ll*                 Ratio*

                                           S/HIWATtB SPtCUS

  18            204 4              European flal oyster.          204 4
                                   Ostreo edulis

  17             83 28             Shore crab.                    81 28
                                   HemiorgpMis midus

  16             14 90             Uud crab,                      14 90
                                   PhiIhroponopeus horrisii

  IS             21 16             yuaaicho],                     21 16
                                   fundulus helerocIilus

  14            >I4 6U             Anphipod.                     >14 60
                                   Orchestia Irostiana

  13              9 712            Shore crab.                     9 712
                                   Carttnus noenos

  12              6 812            Polychaete.                     6 812
                                   Keanthes orenoceodentoto

  II              2 115            Sheepshead  minnoi.             2 115
                                   Cwofinodon vorieaolus

  ID              2 218            Blue oussel.                    2 218
                                   y»>ilus edulis

    g              22              Copepod.                        22
                                   Curvlemoro aft i ni!»

-------
                         Table 3   (coatitued)
ro
CO
                                         Gems Uea*
                                         Acute Value
                         Ha nil a             lua/il
B
                                           I 911
                                             745
                                           I 460
                                           I 365
                                           I 204
                                          <0 9732
                                           Q 6326
                                           0 61
                                Copepod,
                                Mitocro spinipes

                                American lobster.
                                Homorus omen conus

                                Chinook salmon.
                                Oncorhnnchus tsho»v1scho

                                Hard elan.
                                Mercenor10 mercenor10

                                Pacific oyster.
                                Crossostreo qiqos

                                Eastern oyster.
                                Crosses!reo viroi nico

                                Uysid.
                                Metomvsidopsis elongate

                                Copepod.
                                Acortio tonso

                                Mysid.,.
                                Aconthonvsis sculpto
                                                           Species yaae
                                                           Acute  Valve
                                                               tue/ll*
I  911
                                                                                             I  460
                                                                                             I  365
                                                                                               557
                                                                                             0 9316
                                                                                            !>7. ol  Hie  i-.|lo-ud "'V •"'•••

-------
Table 3  (continued)





Fresh water




     Final Acute Value = U 2972




     Criterion Maximum Concentration = (0 2972 yjg/L) / 2 = 0  1486/ig/L





         Final Acute-Chronic Ratio - II 24    (see text)





     Final Chronic Value = (0 2972 jig/L) / 11 24 = 0 02644 Mg/l







Sail »oter




     Final Acute Value = 0 5313 /ig/L




     Criterion Maximum Concentration = (0 SJI3 /jg/L) / 2 = 0  2656 /jg/l




         Final Acute-Chronic Ratio = II 24    (see text)




     Final Chronic Value = (0 5313 pg/l) / 11 24 = 0 04727 ^g/L




     Final Chronic Value = 0 010 jig/L    (lowered to protect  molluscs,  see  text)

-------
                                                Totle  4    Toiicity of Tributyltin  la Aquatic Plaels
LJ
c
        Snecies
Alga,
Bum I ler ions is fill formis

Alga,
Klebsormidi urn mor inum

Alga.
Honodus subterraneus

Alga.
Raphi donemo lonoiseto

Alga.
Tnbonemo aeauale

Blue-green alga.
Osci I lolcna sp

Blue-gre«n alga.
Siinechoceccus leopol leasis

Green olga.
CMonvdoiionos dvsosmos

Green alga,
Chlarel In eaersoni i

Green alga,
Kirchner lei la contorlo
                                                        Hordeess
                                                        (.g/L  .,)
                                                               l
                                          1BTC
                                         WC
                                          IHC
                                          TBIC
                                          1BIC
                                          1BTC
                                          1BTC
                                          1B1C
                                          IBTC
                                          IBIC
Duralioi CoDcentral i a*
(davsl Errecl («a/L)b
fBCSH»ATt» SPCCIES
14 No gro.th 1114

14 Ha gro.th 222 B

14 No gro.th 1.782 2

14 Ho gro.th 56 1

14 Ho gro.th 1114

14 Ho gro.th 222 B

14 Ho gro.th III 4

14 Ho groilb III 4

14 Ho groilh 445 5

14 Ho gro.th III 4

Deference
Bland
Bland
Bland
Bland
Bland
Bland
Bland
Blanck
Bland
Blanck
Blond
Bland
Blanck
Blanck
Blanck
Blanck
Bl and
flland
Blanck
Bin nd
1986.
el al
I9B6.
el al
ISB6,
et al
1986.
et al
1986,
el ol
I9B6.
et al
I 986,
el al
1986,
et al
1906.
et al
IOBG.
el ill
                                                                                                                                          1984
                                                                                                                                          I 96*4
                                                                                                                                          1984
                                                                                                                                          1984
                                                                                                                                          1984
                                                                                                                                          1984
                                                                                                                                          1984
                                                                                                                                          1984
                                                                                                                                          1984
                                                                                                                                          1984

-------
Table 4  (continued)
                                                Hardness
                                                (l/L as
Species                         Chemical

Green alga,                       TBTC
ktonoroptii di um pusi I lum

Green alga,                       TBTC
Scenedesmus  obtusiusculus

Green alga,                       TBTC
Selenostrum capricornut um
Ovralioe
 (dons!

   14
                                                                   14
                                                                   14
                Cancentralloa
Iffect             (Ma/Llb

Mo grovth           1114
                                                                                Mo grovth
                Ma growth
                                                                                                   445 5
                                                                                                    1114
Reference

Blanck I9B6.
blonck el al   1984

Blunck 1986.
blani.k el al   1984

Blonck 1986.
Blanck el ol   1984
                                                                       SPEC us
Diatom.
Skel elonema costatum
Diatom.
Skel et onema costal UP

Diatom.
Steletonema costal ui»

TBTO

TBfO 30C
(BiokUt Red)

TBTO 30*
(olkyl source)

5 Algistat ic
algicidol
14 IC5U
(dry cell
•eight)
14 K5U
(dry cell
•eight)
0 9712-17 52 Ihain I98i
>I7 52
>0 1216. 
-------
                                   Table 5.   Bioaccuaulatio» of  Tributylli* by  Aquatic  Organises
Solioity
Species Cheaicol0 («/l«)

Green olgo. TBTO
Ank i si rodesmus f olcolus


Concentration
IB Voter (ua/LI*
r»tSHW*TIH
5 2
4 7
2 1
1 5
Ourat JOB
(dais) Tissue
SPCCICS
7
14
21
28
Bcr i
_Bil!
300
253
448
467
                                                                                                                        Reference
                                                                                                                        Uaguire  et  al   1984
                                                              SOLTMTtH SPCCUS
Blue mussel
(spot).
U»tilus  edulis

Pacific  oyster.
Crossostrea Qiaos

Pacific  oyster.
Crossostreo qiaos

Pacific  oyster.
Crossostreo oiaos
Pacific oyster.
Crossostreo aiqos

Pacific oyster.
Crossostreo 01qos

Curopean
(lul oyiler.
0 .1 f eg edul i'.
TBTO
TBTO
                          TBTO
TBTO
mo
                                        28 5-34 2
                28-31  5
                28-31  5
              28 5-34 2
                                          29-32
                29-32
                28-31  5
0 24 45 Soft 6.833°
ports
1 2IE 21 Soft I.B74e
ports
0 1460 21 Soft 6.U47"
ports
0 24 45 Salt 7.292e
parts
1 557 56 Soft 2.300
parts
0 1460 56 Soft II.4UO
parts
1 216 21 Soil 96lle
par 1 j
Tho i n and
Wuldack 1985.
Thain 1986
Vfaldock
el al 1983
Ufa Nock
et al 1983
Tha i n and
tfuldock 1985.
Tho in 1986
Wai Jock and
Thain 1983
Wuldock and
Ilio.n IU8J
W.ildutt
el ul I9t)i

-------
        Table b  (continued)
ui
ui
Special
European
Mat oyster.
Ostreo edul is
European
Hal oyster.
Obt reo edul i s
European
f lal oyster.
Ostreo edul is
European
Mot oyster.
Ostreo edul is
Salieity Coecealrat ioe Duration
Clerical* (a/kal le later l«ja/llk 
-------
Table 6   Other Data ae Effects of Tributyltie ae Aquatic Orgaeisws
Special
Algae.
Natural assenblge
Bl ue-jreen alga,
Anabocna f Ips-oauae
Green alga.
Antistfodesntus falcotus
Green alga.
Scenedesaiis QiiaJn taudo
Clan (larva).
Corpic«la Muainea
Cl gdoceron.
Oaahnia mgqnq
Claooceran (<24 br),
Dap tin to moqna
Cladocarao ((24 hr).
Baphnio aaana
Cladaceron (adult).
Oopbnia poana
Rainbo* trout (yearling).
So Iroo aoi rdner i
Mardeess
(-9/1 «
Chemical" CaCOjl Durglio* tit eel
fBtSHMTCB SPCCItS
4 hr CCSO
(product ion)
4 hr CCSO
(reproducl ion)
4 hr USD
(product too)
(reproduction)
4 hr CCSD
(product ion)
TBIO - 24 br CCSO
TBTQ - 24 hr LC5Q
TBIC 20D 24 hr EC 50
(nobility)
IBTO 20U 24 hr CCSO
(mobility)
TBTC * A days Al tered
TBTO - 24 hr lf.50
40 hr
Concektral ion

-------
       Table 6  (ci. . iaued)
CJ
01
       Species


       Roinboi trout.

       Solan) aoirdnan


       Roinboa trout  (embryo.  lar»o),

       SoImo oairdneri
       frog  (embryo,  larva).
       Rono  tempororia

Cheaicol"
TBTO
TBTC





TBTO
TBTf
TBTO

TBTf

Hardiess
(•9/L as Coeceatrat toe
CoCOjl Oyralio. tffeel l««Alb
24 hr CC50 30 8
(rheotoms)
94-102 110 days 201 reduction 0 IB
in groith
2JZ reduction 0 B9
in groilh. 6 61
mortal i ty
IOOZ mortality 4 46
5 days LC40 28 4
5 days LCSO 28 2
S days Loss of body 28 4
•ater
S days Loss of body 2B 2
•aler

Helereoce
Chi lamovi ten
and Kuhn 1977
Semen el al
I9BI




Lauglil i n and
Linden 1982






-------
Table 6  (continued)

Species

Natural nicrobial
populat i ons



Natural microbiol
popul at i ans

Green alga,
Ounal iel 1 a SB
Green alga.
Durtdl lella sp
Oialon.
PhaaodoctKliiin
Iritornulua
Diaton.
Steletoneao
costotua
Oiotoa.
Stel etonena
castatup
Salinity Caecentrat ion
Chemical" (a/to) Duration Cffect (u«/l|b
SmiMTtB SPCCUS
TBTC 2 and 17 1 hr Significant 4 454
decrease in
aelabol ism af
nutrient
substrates
TBTC 2 and 17 1 hr 501 89 07
{incubated aortal ity
10 days)
TITO - 72 hr Appro! CCSO 1 460
(groilh)
TBTO - 72 hr IOOZ 2 970
•ortal i ty
TBTO - 72 hr No effect 1 460-5 819
on gro»lb

TBTA 10 72 hr CCSO 0 J097
(population
groetfe)
TBTA JO 72 hr 1C 50 12 65




Heference

Jonas el
1984



Jonas el
1984

SaJ amr

Sal azar

S
-------
Table 6  (continued)
Spec i as
OlOlOD.
Steletonemo
cost o tun
Diatom,
Steletonemo
costalure
Diatom.
Steletonemo
costolum
0 1 a I on .
Stel el onema
costolum
Diatom.
Steletonema
costotun
Diatom.
Stel etonemo
cost plum
Diatom.
Iholoss losiro
psaudongno
D tot on.
Iholossiosiro
pseudonono
Solicit*
Ckeaicol0 I«A«)
1BTO 10
TBTO 30

1BTC 30
TBTC 30

IBTf 30
TBTf 30

TBTA 30
1BTO 30
Coaceolrat ion
Duralin* Eff.ct (iia/L)b
72 hr CCSO 0 3212
(populat ion
groilh)
72 hr LC50 13 82

72 hr CCSO 0 3207
(populat ion
grovlh)
72 hr LC50 IU 24

72 hr IC50 >0 2346.
(population <0 4693
groith)
72 hr LC50 1117

72 hr CCSO 1 101
(populat ion
grovlh)
72 hr CCSO 1 002
(populat ion
groilh)
Betercpce
Walbh el
1985
Wolbh et
1985

Walih et
1985
Wolbh el
I9BS

Wal^h et
1985
Walsh et
1985

Wulih et
1985
Walbh et
1985
al
al

al
al

al
al

al
ul

-------
       Table 6  (continued)
00
       Oinaflagel late.
       Cvmnedioium
       sol anJens

       OogvheU (adult).
       Hucel la InpiIlus
Vud snail (adult),
HassofiuS
ofasoletuS

61 ue mussel  (spat),
Uvl11 us eJul is
       Blue mussel (spat).
               edulis
       Blue mussel (larva),
               eaulis
       Blue nussel (juvenile).
               adelis
Selieiti
Chemical0 («/ia)
TBTO

c
Duration
72 hr

120 days
Concaetral ion
meet fua/U*
IOOZ 1 460
nortal i ly
4IX Impose. 0 05
( super imposi t ion
Reference
Soloior 1985

Bryan el
1986

al
                                             IBTO
                                                            28 5-J4  2
                                                            28 5-J4  2
                                             TBTO
                                             T&TO
                                                               31 J
                                                                              days
of male anatomical
characteristics on
f eaaIes)

Impose*
                                                                                                                                Smith  1981
45 days
45 days
IS days
7 days

Significant Q 24
reduction in
growth, ae
aortal i ty
IOOX 26
atortaltl y
SIX nortal ity. 0 0973
raauced grovlti
Si^nificenl 0 3893
reduct i on
in growth
Itiain and
Wai dock 1985
Ihatn 1986
Thuin and
Waldact 1985
Ihain 1986
Beaumont and
Budd 1984
Slromgr en
and Bongard
19»?

-------
        Table 6  (canticiued)
                                            Chemical"
LJ
VO
        Blue mussel
        (2 5 to 4  I cm).
        HvtiI us edulis

        Blue mussel
        (2 5 to 4  I cm).
        UvtiI us edulis

        Pacific oyster  (spat),
        Crassostreo qiqos
Pacific oyster (spat).
Crassestreo qiqas

Pacific oyster (spat),
Crossostrea aigas

Pacific oyster (spal),
Crossostreo qiqas

Pacific oyster (larva),
Crossostreo
        PaciTic oyster  (larva),
        Crossostrea aioas
        Paci fic oyster  (larva),
        Crossostreo qiqas
TBTO
                                              TBTO
Salinity
U/tak

-

28 5-14 2
28 5-34 2
29-32
29-32
-
-

Ourat ion
66 days
66 days

45 days
45 days
56 days
56 days
30 days
113 days

Concent rat ion
[Cfect («q/L|b
LCSO 0 97
$1901 f icon! 0 31
decrease in
she! 1 gronth
401 mortal ity. U 24
reduced gro»lh
9QX 2 6
aortal ity
Ho gro.th 1 557
Reduced groith U I46G
IOOZ 2 0
aortal i ty
30 X mortality 0 2
and abnormal
development
Kef ercnce
Vail irs et al
l9Bb. 1987
Yalkirs et al
1985

1 hai n and
Wai dock 1985.
lhain 1986
Tha i n and
Waldack 1985
Wo 1 dock and
Thain 1983
Waldock and
Thain 1983
Al 11 eu et al
I98U
Al 2 1 eu et al
I9SU

                                      TBTf
                                                                18-21
                                 21  days      Reduced  number     0 02346
                                             of  normally
                                             developed
                                             larvae and
                                             selling  of spat
Spnnijboin Bionomics
I984u

-------
lable 6  (continued)
Sal ioi ty
Spec ins Chemical0 (
-------
Table 6. (coititued)
Sp«eias Ckeaical
European (lot oyster (spat). c
Ostreo edulis
European flat oyster (spat). c
Ostreo edul is
[uropean flat oyster (adult). c
Ostreo edul i s

[uropean flat oyster (adult), c
Ostreo edul is

European (lot oyster (adult). c
Ostreo edul is
Hard don (post larva). TBTC
Mercenorio aerceoario (95X)
Hard clam (post larva). TBIC
yereenorio aercenaria (951)

Soli.ily Concentration
(a/kak Ourolioa Effect (|iq/L)
28 5-34 2 45 days Decreased 0 2392
groitb
28 5-14 2 45 days 70X mortality 2 6
28-34 75 doys Complete 0 24
inbibi 1 ion
of larval
product ion
28-34 75 days Retardation 0 24
of sex change
from male to
f ena 1 e
28-34 75 days Prevented 2 6
gonadol
development
96 hr Inhibited 0 OOU7J30
siiMing
behavior
96 hr Reduced 0 OU2922
nuaber of
aninals
developing
a foot
Refereece
Ihuin and
Wul dock 1985.
Ihain 1986
Thain and
Wai dock I98S.
Thain 1986
Thain 1986

Ihain 1986

Thain 1986
Becerra-
Huencho 1984
Becerro-
Huencho 1984

Hard  clam (embryo,  lorxa).
Uercenaria mercenor10
TBIO
14 days      Reduced 
-------
Table 6  (cont i noed)
S fee I es
Hard clan ( larva) ,
Uerceiiarja merceneri a
Hard clan (post larva),
Hefcenorio mercenorio
Hard clan ( larva) ,
Merceoor i a mercenan a
Clam (adult).
Protottiaco slam no
Copepad,
[urvtemoro otl mi s
Copepad.
[urvtenora offinis
Copepad.
Acort IP tonsa
Aaphipod (larva, juvenile),
Cqnaqrus oceacus
Amphipod (larva, juvenile).
Cammarus eceanus
Aaphipod (larva, juvenile),
Gommorus eceonus
Amphipod (larva, juvenile]
r*iminflr us nrpanus
Salinilf
Cheaicol" .2 92U
II days Reduced survival 0 088
of aeonates and
adults
1} days Reduced survival 0 224
of aeanates
144 hr CC50 0 3891
B ik (DOS mortality 2 920
6 it IOOZ mortality 2 816
8 ik Reduced 0 2920
survi val
and f,ro*th
fl «k Reduced U 2UIC
lurv i val and
Reference
Laugh! to et al 198?
Laughlin et al 1987
Roberts. Manuscript
Salazar and
Sal ajar, Uanubcr i pi
Hal 1 el al 1987
Hall et al 1987
U'ren 1985
laugal in et al
I984b
laugh 1 i n el al
I984b
(.ought in et al
I984b
1 uuylil i n et u|
1 'JtiAb
                                                                                  i ncreo^eJ giu«th

-------
Table 6. (continued)
Species
Amphipod (adult).
Orchest i e trosfc iano
Amphipod (adult).
Orchest 10 trosfc long
Crass shrimp.
Pol oemoneles puqio
Mud crab (larva).
Rhi Ihropanopeus horrisi i
Hud crab ( larva) .
Rhi Ihropanopeus horrisi i
Hud crab (larva).
Rhi Ihropanopeus horrisi i
Hud crab (larva).
Rhi Ihropanopeus horrisi i
Hud crab,
Rhi Ihropanopeus horrisi i
Hud crab.
Rhi throponopeus herrisi i
Uud crab.
Rhi I hropanopeus horr i si i
Chemical"
TBTO
TBTf
TBTO
(95X)
TBTO
TBTS
TBTO
TBTS
TBTO
TBTO
TBIO
Salinity
la/kal
3D
30
99-11 2
15
15
15
15
15
15
15
Ourat ion
9 days
9 days
2U mm
15 days
IS days
15 days
15 days
6 days
6 days
6 days
Concentration
Effect (tia/Llb
Appro* BUZ 9 732
mortal i ly
Appro* 901 9 732
mortal i ty
No avoidance 30
Reduced 14 60
developmental
role and groith
Reduced 18 95
developmental
rate and groit-h
63X Mortality >24 33
74X Mortality 28 43
BCf=24 5 937
for carapace
BCf=6 5 937
for hepoto-
paacreas
BCf = 0 6 5 937
for levies
Reference
Laughl in et al
1982
loughl in et al
1982
Pinkney el al 1985
Laughl in et al
1983
Laughl in el al
1983
Laughl in et al
1983
Laughl in et al
1983
[vans and
Laughlin 1984
(vans and
Laughlin 1984
1 vunb and
ItiuuJiliN 1984

-------
Table 6. (coatiauad)

Species Cheaical*
Uud crab. TBTO
Rhi Ihrooanopeus horrisi i

Uud crab. TBIO
Rhi thr oconooeus horr is i I
Tiddler crab. TBTO
Uca pug i lotor

Atlantic aenhaden (juvenile). TBIO
BrevooHio tvronnus
Chinook salmon (adult). TBTO
Oncorhvnchus tsho»vtscha
Chinook salmon (adult). TBTO
Oncorhvnchus lsha»v tscho
Chinook salmon (adult). TBTO
Oncorhvnchus tshawvtstho
Uunaichag. IBTO
f undulus heterocl i tus (951)
Col i fornia gruoian c
( gamete through eabryo).
leuresthes tenuis

Col i fornia gruni on c
i n niHA 1 A ft hr n ii n h £mhr u n 1
Salinity Concentration
ia/ka) Duration tlfect Iua/Llb
15 6 days BCF=4I . 5 937
Tor gi 1 1
t issue
15 6 days BCf=l 5 for 5 937
chelae muse le
25 i24 days Retarded Imp 05
regeneration and
moll ing
9-11 - Avoidance 5 437

28 96 hr BCr=4300 1 49
for liver
28 96 hr BCr>)300 1 49
for brain
21 96 br BCf=200 1 49
lor auiscle
99-11 2 20 am Avoidance 3 7

10 days Significantly 0 14-1 72
enhanced
gravid and
hatching success
111 days 501 redact ion 74
in hatchi nq

Reference;
[vans and
Laugblin 1984

[vans and
Laughlin 1984
Weis et al 1987


Hall et al
1984
Short and Throier
I986a. c
Short and Thro>er
I986a.c
Short and Throier
I986a.c
Pinlcney el al 1985

N««tan et al
1985


Neilon et ul
I'JaS
I euf ea tliea lenui s

-------
Table G  (cantitu«d)
                                                     Selieity
                                                             Coecentratroe
California gruniaa (enbryo).
leuresthes lenuis
California grunion (larva).
Ieureslhes lenui s
Striped bass (juvenile).
Horone Sonet i I is

Speckled sanddab (adult).
Chithorichthys stigneous
                                    Cboicol'
(a/ til Duratioe I If eel
10 days Ho adverse
effect on
hatching
success or
groith
7 days Survival
increased as
concentral i on
increased
loa/LT
Q 14-1 72




U 14-1 72



TBTO
(951)

WO
9-11
                                96 br
                           Avoidance
                           USD
                                           24 9
IB 5
                                                                                  Hef erence

                                                                                  Neiton et al
                                                                                  I 985
                                                                                  Meilan el  ol
                                                                                  1985
Noll et al
I9S4

Solozor and Soloior.
Manuscript
" TBU = tributyltin acetate. TflIC = Inbutyltin chloride.  TBIf  -  IributvlliD  fluoride. TBTO  =  Inbutvltin  amde.
       = tribulyltin sulfide   Percent  penly is givto in  porcntlteiies  idea
b Cancenlral ion of the tributyltia cation,  not  the cbemical    If  the  concentral ions eere not aeosured  and  the  published  results  »ere not
  reported to be adjusted for purity,  the published results  eere  Multiplied  by  the purity  if it »os  reported  to  be  less,  than  9SZ

c The lest organises eere exposed lo leachale Iron) panels  coated  eitb antifauliog paint containing  tribulyltin

  The test organisms were exposed to leachale Iron panels  coaled  lilh anlifouling paint coataining a Inbutyltin polymer
  and cuprous onde   Concentrations of  TBT «ere  measured  and  th«  authors provided data to demonstrate  the similar  laxicily of a
  pure TBT coopound and the IBT from the paint  formulation

-------
                                  REFERENCES








Alabaster,  J  S.  1969.  Survival of fish in 164 herbicides,  insecticides.




fungicides,  wetting agents and miscellaneous substances.  Int.  Pest Control




11'29-35








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