https://www.selleckchem.com/pr....oducts/pf-04957325.h
Compelling evidence has indicated that males exceeding females in whole-fish polychlorinated biphenyl (PC concentration is not due to females undergoing a drastic decrease in their PCB concentrations due to shedding of eggs at spawning (Madenjian et al. 2016). First, even though coho salmon (Oncorhynchus kisutch) and sea lamprey (Petromyzon marinus) are semelparous species in that they spawn only once during their lifetime and then die soon thereafter, determinations on adult fish caught prior to spawning revealed that males were
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