Green frogs in southwestern Michigan: Deformity survey and chemical residues in water, sediment, and tissue 机翻标题: 暂无翻译,请尝试点击翻译按钮。

作者
Duda, Carolyn Ann
摘要
In an attempt to explain the etiology of frog deformities and population declines, many possible causative factors have been examined, including the input of synthetic chemicals into aquatic systems, where frogs spend much of their lives, including their entire developmental stages. This study focused on surveying wetlands in southwestern Michigan that are influenced by agricultural run-off or urban and industrial inputs for deformities in green frogs. Of the 1445 green frogs examined in 1998, only 4 (0.28%) exhibited morphological deformities. Water, sediment and tissue from frog eggs, tadpoles, juveniles, and adults were analyzed for organochlorine (OC) insecticides, polychlorinated biphenyls (PCBs), metals, and triazine herbicides by use of traditional instrumental analysis for most compounds and by Enzyme-Linked Immunosorbent Assay (ELISA) for triazine analysis. Sample extracts were also assayed for their estrogenic and dioxin-like activities using recombinant cell lines. Overall, low concentrations were observed in the frogs and their habitats. No correlation between deformities and chemicals could be made due to the low deformity rate in the region.
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关键词
Environmental science;Zoology;Toxicology
页数
139
出版日期
2019-06-25
学位授予单位
Michigan State University
学位年度
2000
学位
M.S.
语言
eng
院系
Environmental science;Zoology;Toxicology
导师
(Missing)
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