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首页> 外文期刊>Environmental toxicology and chemistry >Effects of agricultural runoff on native amphibians in the lower fraser river valley, british columbia, canada
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Effects of agricultural runoff on native amphibians in the lower fraser river valley, british columbia, canada

机译：农业径流对加拿大不列颠哥伦比亚省弗雷泽河下游河谷天然两栖动物的影响

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摘要

Hatching success, deformity rates, and survivorship of northern red-legged frogs(Rana aurora) and northwestern salamanders (Ambystoma gracile) were assessed at three agricultural and three reference sites in the Sumas Prairie, British Columbia, Canada. In 1997 and 1998, eggs of both species and eggs of R. Aurora, respectively, were placed in Nytex mesh cages(Irwindale, CA, USA) in roadside ditches at each site. Concurrently in 1997, eggs of R. Aurora were reared in the laboratory but were exposed To water samples from each of the study sites. Hatching success was significantly lower at all agricultural sites compared to the Reference sites for both species.
机译：在加拿大不列颠哥伦比亚省的Sumas Prairie的三个农业地点和三个参考地点，评估了北部红脚蛙（Rana aurora）和西北sal（Ambystoma gracile）的孵化成功率，畸形率和存活率。在1997年和1998年，分别将R. Aurora的种蛋和R. Aurora的蛋分别放置在每个站点路边沟的Nytex网箱（美国加利福尼亚州，Irwindale）中。同时在1997年，R。Aurora的卵在实验室饲养，但暴露于每个研究地点的水样中。与两个物种的参考地点相比，所有农业地点的孵化成功率均明显较低。

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