Tests of reproductive success in feral fish should be conducted with additional species 

 (preferably, those that are non-migratory and demersal) in areas suspected of being 

 highly contaminated. 



Biochemical and other analyses that are indicative of reproductive impairment, but 

 are quicker and less expensive than spawning studies, should be tested and 

 evaluated. 



Other comparative evaluations should be conducted as new candidate tests become 

 available. 



Multiple, complementary measures of bioeffects should be applied in comprehensive 

 surveys; the measures chosen should match or be responsive to the types of chemicals 

 known or hypothesized to occur in the study area; and they should be chosen 

 following a comparative evaluation of candidates such as that reported here. 



97 



