Assessing the Impacts of Methoxychlor Exposure on the Viability, Reproduction, and Locomotor Behavior of the Seminole Ramshorn Snail (Planorbella duryi).,Environmental Toxicology and Chemistry

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Assessing the Impacts of Methoxychlor Exposure on the Viability, Reproduction, and Locomotor Behavior of the Seminole Ramshorn Snail (Planorbella duryi).
Environmental Toxicology and Chemistry ( IF 3.6 ) Pub Date : 2019-11-27 , DOI: 10.1002/etc.4613
Tyler E Frankel ₁ , Meredith E Bohannon ₂ , Jack S Frankel ₃

Affiliation

In the present study, the effects of short-term methoxychlor exposure on the viability, reproduction, and locomotor behavior of adult seminole ramshorn snails (Planorbella duryi) was assessed. To examine impacts on viability and behavior, individuals were exposed to a water control, vehicle control, or 12.5, 50, 100, 250, 500, or 1000 μg/L of methoxychlor for 48 h; and differences in mortality and locomotor behavior assessed using the freely available ToxTrac software. To determine impacts on reproduction, pairs of snails were exposed to a vehicle control and 12.5, 25, 50, 100, and 250 μg/L of methoxychlor for 9 d; and the number of clutches and eggs laid quantified every 24 h. Methoxychlor concentrations in treatments were determined using gas chromatography. Complete mortality was observed in the 500 μg/L and 1000 μg/L treatments after 48 h and in the 250 μg/L treatment after 9 d. Decreases in the number of egg clutches were observed in all treatments, and the number of eggs laid decreased starting in the 25 μg/L treatment. Decreases in average speed, mobile speed, and total distance traveled, as well as a significant increase in frozen events, were also observed. Our results suggest that methoxychlor exposure causes detrimental effects on several nonlethal endpoints in a nonmodel aquatic invertebrate species and that the analysis of locomotor behaviors serves as a reliable, sensitive endpoint for ecotoxicology testing. Environ Toxicol Chem 2019;39:220-228. © 2019 SETAC.

中文翻译：

评估甲氧氯暴露对塞米诺尔Ramshorn蜗牛（Planorbella duryi）的活力，繁殖和运动行为的影响。

在本研究中，评估了短期暴露于甲氧基氯对成年半乳头长角蜗牛（Planorbella duryi）的活力，繁殖和运动行为的影响。为了检查对生存能力和行为的影响，将个体暴露于水分控制，媒介物控制或12.5、50、100、250、500或1000μg/ L甲氧基氯中48小时；使用免费提供的ToxTrac软件评估死亡率和运动行为的差异。为了确定对繁殖的影响，将成对的蜗牛分别暴露于媒介物对照和12.5、25、50、100和250μg/ L的甲氧基氯中9 d；每24小时对产下的离合器和卵的数量进行量化。使用气相色谱法测定处理中甲氧基氯的浓度。48小时后在500μg/ L和1000μg/ L处理中以及9 d后在250μg/ L处理中观察到完全死亡率。在所有处理中均观察到抓卵的数量减少，并且从25μg/ L处理开始，产卵的数量开始减少。还观察到平均速度，移动速度和行进总距离的减少，以及冻结事件的显着增加。我们的结果表明，甲氧氯暴露对非模型水生无脊椎动物物种中的几个非致死终点产生有害影响，运动行为的分析是生态毒理学测试的可靠，敏感的终点。Environ Toxicol Chem 2019; 39：220-228。©2019 SETAC。从25μg/ L处理开始，产卵数减少。还观察到平均速度，移动速度和行进总距离的减少，以及冻结事件的显着增加。我们的结果表明，甲氧氯暴露对非模型水生无脊椎动物物种中的几个非致死终点产生有害影响，运动行为的分析是生态毒理学测试的可靠，敏感的终点。Environ Toxicol Chem 2019; 39：220-228。©2019 SETAC。从25μg/ L处理开始，产卵数减少。还观察到平均速度，移动速度和行进总距离的减少，以及冻结事件的显着增加。我们的结果表明，甲氧氯暴露对非模型水生无脊椎动物物种中的几个非致死终点产生有害影响，运动行为的分析是生态毒理学测试的可靠，敏感的终点。Environ Toxicol Chem 2019; 39：220-228。©2019 SETAC。我们的结果表明，甲氧氯暴露对非模型水生无脊椎动物物种中的几个非致死终点产生有害影响，运动行为的分析是生态毒理学测试的可靠，敏感的终点。Environ Toxicol Chem 2019; 39：220-228。©2019 SETAC。我们的结果表明，甲氧氯暴露对非模型水生无脊椎动物物种中的几个非致死终点产生有害影响，运动行为的分析是生态毒理学测试的可靠，敏感的终点。Environ Toxicol Chem 2019; 39：220-228。©2019 SETAC。

更新日期：2019-12-27

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