Habitat Partitioning and Contaminant Exposure in Cyprinids

摘要: Four species of forage fish from the Huron–Erie corridor — Labidesthes sicculus, a surface feeder; Notropis atherinoides, facultative hudsonius, benthivore; and Pimephales notatus, benthivore were found to have significantly different levels organochlorine contaminants with high 1-octanol/water partition coefficients (Kow). Chemical greatest in P. reflecting its greater exposure contaminated sediments. The interspecific differences observed indicate that habitat partitioning is major factor regulating contaminant these species. These important implications for fugacity models which would predict should not exist. Although chemical physiological parameters may determine potential bioaccumulate, it regulation through ecological processes will degree pot...