"The Influence of Temperature and Chemical Hydrophobicity on Steady and" by Michael Burtnyk

Date of Award

2009

Publication Type

Master Thesis

Degree Name

M.Sc.

Department

Great Lakes Institute for Environmental Research

Keywords

Chemistry, Environmental.

Supervisor

Loeb, Stephen (Chemistry & Biochemistry) Drouillard, Kenneth (Biological Sciences) Haffner, G. (Biological Sciences)

Rights

info:eu-repo/semantics/openAccess

Abstract

This thesis investigated the effects of temperature and chemical hydrophobicity on steady and non-steady state bioaccumulation of polychlorinated biphenyls over the lifetime of temperate freshwater fish. In Chapter 2, the elimination of congeners of logKow < 5.7 by yellow perch (Perca flavescens) was regulated by temperature-dependant metabolic rates. Congeners of logKow > 5.7 however, were not significantly eliminated at any temperature commonly encountered by temperate fishes. It was concluded that the bioaccumulation of congeners of logKow > 5.7 is regulated by energetically driven consumption rates. This conclusion was confirmed in Chapter 3, where it was determined that the majority of congeners of logKow > 6.8 did not achieve steady state within the lifetime of bluegill (Lepomis macrochirus) or cisco (Coregonus artedii). The bioaccumulation of low Kow congeners was determined to be a function of temperature-driven physiological processes whereas high Kow congeners were related to ecological processes.

Share

COinS