Survivorship Patterns of Larval Amphibians Exposed to Low Concentrations of Atrazine
نویسندگان
چکیده
منابع مشابه
Survivorship Patterns of Larval Amphibians Exposed to Low Concentrations of Atrazine
Amphibians can be exposed to contaminants in nature by many routes, but perhaps the most likely route is agricultural runoff in amphibian breeding sites. This runoff results in high-level pulses of pesticides. For example, atrazine, the most widely used pesticide in the United States, can be present at several parts per million in agricultural runoff. However, pesticide levels are likely to rem...
متن کاملComment on "Gonadal development of larval male xenopus laevis exposed to atrazine in outdoor microcosms".
This correspondence is a commentary on “Gonadal Development of Larval Male Xenopus laevis Exposed to Atrazine in Outdoor Microcosms” by Jooste et al. (1). Since the publication of our paper, “Hermaphroditic, Demasculinized Frogs after Exposure to the Herbicide Atrazine at Low Ecologically Relevant Doses” (2), which demonstrated that atrazine is a potent endocrine disruptor that chemically castr...
متن کاملGonadal development of larval male Xenopus laevis exposed to atrazine in outdoor microcosms.
The potential effects of atrazine on gonadal development in metamorphs and subadults of the African clawed frog (Xenopus laevis) were studied under conditions of natural photoperiod and temperatures in outdoor microcosms from August 2002 to June 2003 in South Africa. Triplicate 1100 L microcosms for each nominal concentration of 0.0, 1, 10, and 25 microg of atrazine/L were used. Measured atrazi...
متن کاملReproduction, larval growth, and reproductive development in African clawed frogs (Xenopus laevis) exposed to atrazine.
Reproductive success and development of F2 offspring from F1 adult African clawed frogs (Xenopus laevis) exposed to atrazine throughout larval development and as sexually mature adults was examined. Larval X. laevis were exposed to one of four nominal concentrations of atrazine (0, 1, 10, 25 microg atrazine/l) beginning 96 hr after fertilization and continuing through two years post-metamorphos...
متن کاملToxicity of atrazine, glyphosate, and quinclorac in bullfrog tadpoles exposed to concentrations below legal limits.
This work sought to ascertain survival and possible changes in levels of glycogen, triglycerides, total lipids, cholesterol, protein, and lipid peroxidation in gills, liver, and muscle of bullfrog tadpoles (Lithobates catesbeianus) exposed to low concentrations of atrazine (2.5 μg L(-1)), glyphosate (18 μg L(-1)), and quinclorac (0.025 μg L(-1)) at laboratorial conditions. Tadpoles showed a red...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 2004
ISSN: 0091-6765,1552-9924
DOI: 10.1289/ehp.6821