Effects of subchronic fungicide exposure on the energy processing of Gammarus fossarum (Crustacea; Amphipoda).
Effects of subchronic fungicide exposure on the energy processing of Gammarus fossarum (Crustacea; Amphipoda).
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DOI：
10.1016/j.ecoenv.2010.07.046
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发表时间：
2010-10
影响因子：
6.8
通讯作者：
J. Zubrod;M. Bundschuh;R. Schulz
中科院分区：
文献类型：
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作者：
J. Zubrod;M. Bundschuh;R. Schulz
目前对植物保护产品或杀菌剂的水生环境风险评估没有考虑对参与凋落叶分解的生物的影响，凋落叶分解是溪流中一个基本的生态系统过程。因此，我们评估了戊康唑（一种常用的三唑类杀菌剂）对碎叶片脚类动物Gammarus fossarum的直接生态毒理学影响。虽然急性毒性较低（96h-LC50=1347μg/L），但暴露于600μg/L 7天后，亚致死终点摄食率显著降低。在相同的浓度下，在半静态条件下暴露三周，伽马胺在摄食、同化和生长方面都有显著减少。而在200μg/L时，只有同化受到显著影响。由于这些端点可用于评估各种化学品的生态毒性，并推断对生态系统功能的可能影响，因此纳入类似的实验装置可能进一步改善水生环境风险评估。
Current aquatic environmental risk assessment of plant protection products or biocides does not consider effects on organisms involved in leaf litter breakdown, a fundamental ecosystem process in streams. Therefore, direct ecotoxicological implications of tebuconazole, a frequently used triazole fungicide, on the leaf-shredding amphipod Gammarus fossarum, were assessed. While acute toxicity was low (96h-LC50=1347μg/L), feeding rate, a sublethal endpoint, was significantly reduced after seven days of exposure to 600μg/L. At the same concentration, but during a three week exposure under semi-static conditions, gammarids showed significant reductions in feeding, but also in assimilation and growth. At 200μg/L, however, only assimilation was significantly affected. As these endpoints can be used to evaluate the ecotoxicity of a broad range of chemicals and to deduce possible implications in the functioning of ecosystems, the inclusion of similar experimental set-ups might further improve aquatic environmental risk assessment.