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Factors affecting the bioconcentration of hexachlorocyclohexanes in early life stages of Oncorhynchus mykiss
Author(s) -
Viganò L.,
Galassi S.,
Gatto M.
Publication year - 1992
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.5620110411
Subject(s) - bioconcentration , bioaccumulation , rainbow trout , environmental chemistry , chemistry , juvenile , toxicology , biology , ecology , fish <actinopterygii> , fishery
A commercial mixture of α‐, β‐, γ‐, and δ‐hexachlorocyclohexane (‐HCH) isomers has been tested for bioconcentration on early life stages of Oncorhynchus mykiss. Experimental results were elaborated by means of BIOCON, an interactive program for personal computers that provides bioconcentration factors (BCFs) and kinetic uptake and depuration coefficients as well as their standard deviations. The comparisons performed on a statistical basis evidenced few differences among the bioconcentration capability of larval stages, contrary to what was observed in previous studies with other chemicals. In the early juvenile stage, α‐ and δ‐HCH are characterized by higher BCFs than the γ‐isomer. The role of lipids is also investigated. The total lipid content seems to play a major role in influencing bioaccumulation parameters but cannot thoroughly explain BCF variability, which must be ascribed to other factors such as life stage and lipid composition.