Wildlife in a chemical world
Society of Environmental Toxicology and Chemistry, annual meeting abstract book
Two-part article. See also Audubon Magazine 54(4):248-252.
By: J.P. Linduska
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Abstract
Snapping turtles were collected by the Ohio State EPA from six locations in Ohio believed to have different contaminant concentrations. Previously we reported significant correlations among four hepatic microsomal dealkylases and CYP1A in these turtles. Herein we compare ethoxyresorufin-O-dealkylase (EROD) and methoxyROD (MROD) to tissue contaminant concentrations. For Fifty-four of these turtles, muscle, fat body and liver tissues were assessed for PCBs and 20 organochlorine analytes and hepatic microsomal dealkylases. Of the contaminants analyzed, only DDE, dieldrin, oxychlordane, trans-nonachlor and PCB 1260 were detected in >25% of each sample type. When EROD and MROD activities were compared to tissue values for these contaminants, they were found to correlate significantly only to DDE, dieldrin and trans-nonachlor. For an 18 female subset of these turtles, serum PCBs and organochlorine pesticides, egg, fat body and liver dioxins and furans, and hepatic microsomal dealkylases were assessed. EROD and MROD both correlated significantly to serum PCB 105, PCB 138 and DDE, and to egg total PCBs. EROD and MROD did not correlate significantly with liver dioxins and furans, but there were significant correlations between EROD and egg and fat body dioxins and furans, and MROD and fat body dioxins and furans. It is expected that CYP1A-type inducers such as certain PCBs, and halogenated dioxins and furans, but not organochlorine pesticides, would be inducers in turtles. Presumably the correlation of monooxygenase with organochlorine pesticides is fortuitous, and toxic equivalencies are being calculated using a number of systems.
Suggested Citation
Linduska, J., 2000, Wildlife in a chemical world: Society of Environmental Toxicology and Chemistry, annual meeting abstract book, v. 21, no. 3, p. 144-149.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Wildlife in a chemical world |
| Series title | Society of Environmental Toxicology and Chemistry, annual meeting abstract book |
| Volume | 21 |
| Issue | 3 |
| Year Published | 2000 |
| Language | English |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 99 (abstract 457) |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Society of Environmental Toxicology and Chemistry, annual meeting abstract book |
| First page | 144 |
| Last page | 149 |