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

Journal of the Fisheries Research Board of Canada

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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 Residues in tissues decreased rapidly after dieldrin was withdrawn from the diet.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
Volume
32
Issue:
11
Year Published:
1975
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 2197-2204
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
2197
Last page:
2204
Number of Pages:
7