Dieldrin in the diet of channel catfish (Ictalurus punctatus): uptake and effect on growth

Journal of the Fisheries Research Board of Canada
By: , and 

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Abstract

Fingerling channel catfish (Ictalurus punctatus) were given diets containing 0, 0.4, 0.8, or 4.0 I?g dieldrin/g of food (dry weight) for 210 days, followed by a dieldrin-free diet for 56 days. Catfish receiving 4.0 I?g dieldrin/g food gained about 17% less weight than the control fish in 210 days and about 35% less weight during the last 126 days of the 210-day period. No growth differences were attributable to the ingestion of 0.4 or 0.8 I?g dieldrin/g of feed. Mortality during the experiment was random and not appreciable. Dieldrin accumulations were characterized by an immediate rapid rise of residue levels in the tissues, followed by a period during which concentrations were relatively stable. Residues in tissues decreased rapidly after dieldrin was withdrawn from the diet. Dieldrin half-life was 9.6 days (mean for the three groups). Theoretical residue concentrations calculated from the growth, feeding, and half-life data were similar to the empirical concentrations, although the theoretical values were consistently the higher. The recoverable concentration accounted for 25.7% (mean of the three treatments) of the theoretical concentration.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Dieldrin in the diet of channel catfish (Ictalurus punctatus): uptake and effect on growth
Series title Journal of the Fisheries Research Board of Canada
DOI 10.1139/f75-258
Volume 32
Issue 11
Year Published 1975
Language English
Publisher NRC Research Press
Contributing office(s) Great Lakes Science Center
Description 8 p.
First page 2197
Last page 2204
Online Only (Y/N) N
Additional Online Files (Y/N) N