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Sensitivity of animals to chemical compounds links to metabolic rate

机译:动物对化合物的敏感性与代谢率有关

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Ecotoxicological studies have shown considerable variation in species sensitivity for chemical compounds, but general patterns in sensitivity are still not known. A better understanding of this sensitivity is important in the context of environmental risk assessment but also in a more general ecological and evolutionary one. We investigated the metabolic rate or more precise the specific somatic maintenance (expressed in J cm(-3) d(-1), at a standardised body temperature of 20 degrees C) on the sensitivity of a species to chemical poisoning. The sensitivity of a species was expressed in terms of its threshold concentration for survival, the no effect concentrations (NEC, in mu mol/L). Somatic maintenance data were based on the 'add-my-pet' database hosted by the VU University of Amsterdam. NECs were derived from the US-EPA ECO-TOX database. We focussed on four pesticides; two that need a metabolic activation, Chlorpyrifos and Malathion, and two without metabolic activation, carbofuran and carbaryl. All four pesticides showed a similar response: a strong negative correlation between the specific somatic maintenance and the NEC. We discuss possible explanations, deviations and ecological implications.
机译:生态毒理学研究表明,对化合物的物种敏感性差异很大,但敏感性的一般模式仍然未知。更好地理解这种敏感性在环境风险评估的背景下很重要,但在更一般的生态和进化评估中也很重要。我们研究了代谢速率或更精确的特定体细胞维持(在20摄氏度的标准体温下以J cm(-3)d(-1)表示)对物种对化学中毒的敏感性。物种的敏感性表示为生存阈值浓度,无效应浓度(NEC,以μmol / L为单位)。躯体维护数据基于阿姆斯特丹VU大学托管的“ add-my-pet”数据库。 NEC来自US-EPA ECO-TOX数据库。我们专注于四种农药。两种需要代谢活化的毒死rif和马拉硫磷,两种不需要代谢活化的杀虫剂是呋喃丹和西维因。四种农药均表现出相似的响应:特定的体细胞维持与NEC之间存在强烈的负相关性。我们讨论了可能的解释,偏差和生态影响。

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