Table 3. Acute toxicities of Aroclor PCBs to selected aquatic species. 



Ecosystem, 

 organism, 

 compound tested 



Exposure 

 period 

 (days) 



LC-50 

 (ug/1) 



Reference 



30 

 80-100 



10 

 5 



52 

 2,400 



Freshwater 

 Invertebrates 



Crayfish, Orconectes nais 



1242 7 



1254 7 



Scud, Gammarus pseudol imnaeus 



1242 ? 



1242 10 



1248 4 



1254 4 



Glass shrimp, Palaemonetes kadiakensis 



1254 7 3 



Damsel fly, Ischnura verticalis 



1242 ? 400 



1254 4 200 



Dragonfly, Macromia sp. 



1242 T 



1254 5 



Cladoceran, Daphnia magna 



1254 14 



1254 21 

 Stonefly, Pteronarcel la badia 



1016 ? 



Hydra, Hydra oligactis 



1016 3 5,000 



1254 3 10,000 



Fish 



Rainbow trout, Salmo gairdneri 



1016 



1242 



1248 



1254 



1254 



1260 

 Bluegil 



1016 



1242 



1242 



800 

 800 



1.8-24.0 

 1.3 



424-878 



NAS 1979 



Johnson and Finley 1980 



EPA 1980 



Johnson and Finley 1980 

 Adams and Haileselassie 1984 



37 



