A relatively unexplored concern is the relationship between
saltwater acclimation and the impacts of anthropoge nic activities
in the main drainage basins from the Central Valley on migrating
fishes. Since bifenthri n has been observed in areas where salmonids
may undergo hypersaline acclimation, we hypothes ized that
juvenile steelhead exposed to bifenthri n, would negatively affect
endocrine and/or gonadal developmen t.