Habitat partitioning and contaminant exposure in cyprinids
Four species of forage fish from the Huron-Erie corridor Labidesthes sicculus, a surface feeder; Notropis atherinoides, a facultative surface feeder; Notropis hudsonius, a facultative benthivore; and Pimephales notatus, a benthivore) had significantly different levels of organochlorine contaminants with high 1-octanol/water partition coefficients. Chemical levels were greatest in P. notatus, reflecting its greater exposure to contaminated sediments. Habitat partitioning is a major factor regulating contaminant levels. Interspecific differences in contaminant levels have important implications for fugacity models which would predict that these differences should not exist. Although chemical and physiological parameters may determine which contaminants have the potential to bioaccumulate, it is the regulation of exposure through ecological processes that will determine the degree to which that potential is realized. -from Authors
|Journal||Canadian Journal of Fisheries and Aquatic Sciences|
Hebert, C.E, & Haffner, G.D. (G. D.). (1991). Habitat partitioning and contaminant exposure in cyprinids. Canadian Journal of Fisheries and Aquatic Sciences, 48(2), 261–266.