DDE in Eggs of Two Crocodile Species from Belize
| Autor: | Todd A. Anderson, Scott T. McMurry, Steven G. Platt, Thomas R. Rainwater, Ted H. Wu |
|---|---|
| Rok vydání: | 2000 |
| Předmět: |
Alligators and Crocodiles
Insecticides biology Pesticide residue Ecology Dichlorodiphenyl Dichloroethylene Eggs Crocodylus acutus Pesticide Residues Crocodylus moreletii Zoology General Chemistry Interspecific competition Crocodile Pesticide biology.organism_classification Belize Crocodilia biology.animal embryonic structures Animals Ecotoxicology Female General Agricultural and Biological Sciences |
| Zdroj: | Journal of Agricultural and Food Chemistry. 48:6416-6420 |
| ISSN: | 1520-5118 0021-8561 |
| DOI: | 10.1021/jf000321u |
| Popis: | Organochlorine (OC) residues were recently detected in nonviable Morelet's crocodile (Crocodylus moreletii) eggs from northern Belize. To further the assessment of contaminant exposure in Belizean crocodiles, nonviable Morelet's crocodile eggs (n = 11) from southern Belize and American crocodile (Crocodylus acutus) eggs (n = 12) from the coastal zones of Belize were screened for 20 OCs. Results indicated p,p-DDE to be the most prevalent OC (96% occurrence) in eggs examined, with concentrations ranging from 5 to 372 ng/g. These concentrations are similar to those observed in crocodile eggs (10-180 ng/g) from northern Belize. A general trend toward higher DDE concentrations in Morelet's crocodile eggs (mean = 103 ppb) compared with American crocodile eggs (mean = 31 ppb) was observed. However, this trend may be due to site-specific contamination rather than differences in interspecific susceptibility to chemical exposure. Other OCs detected in crocodile eggs included the parent compound, p,p-DDT, and its metabolite, p, p-DDD. |
| Databáze: | OpenAIRE |
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