Dieldrin in the diet of channel catfish (Ictalurus punctatus): uptake and effect on growth
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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 Residues in tissues decreased rapidly after dieldrin was withdrawn from the diet.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.
| 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 |
| Google Analytic Metrics | Metrics page |