Population Developmental Stage Determines the Recovery Potential of Daphnia magna Populations after Fenvalerate Application

BARRY J.PIETERS; MATTHIAS LIESS

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Population Developmental Stage Determines the Recovery Potential of Daphnia magna Populations after Fenvalerate Application

机译：人口发展阶段确定了氰戊菊酯施用后水蚤的恢复潜力

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This study investigated the responses of Daphnia magna populations to pulsed exposures of the pyrethroid insecticide Fenvalerate applied during an early and a late stage of population development,and analyzed the dynamics of the subsequent recovery.A novel digital observation technique was used to describe the size and numbers of animals.High Fenvalerate concentrations caused high mortality rates during exponential population growth as well as during the food-limited stationary phase.However,recovery of populations took considerably longer in the stationary phase than in populations growing exponentially.The poor nutritional and reproductive state of food-deprived adults was indicated as the main cause of the slow recovery of populations.It is argued that populations operating at the carrying capacity of their environment are vulnerable to toxicant-induced disturbances to an extent not predictable from observations on exponentially growing populations such as are commonly used in ecotoxicology.

机译：这项研究调查了大型蚤（Daphnia magna）种群对在种群发展的早期和晚期施用的拟除虫菊酯类杀虫菊酯杀虫剂的脉冲响应，并分析了随后恢复的动力学。富戊酸的高浓度导致指数增长的人口以及食物有限的静止期的死亡率很高。然而，静止期的种群恢复要比指数增长的种群花费的时间长得多。营养和生殖状态差据指出，缺乏食物的成年人是人口恢复缓慢的主要原因。有人认为，在其环境承受能力下工作的人口易受毒物引起的干扰，这在指数增长的人口观察中难以预测。如ecoto中常用的毒理学。

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来源
《Environmental Science & Technology》 |2006年第19期|p.6157-6162|共6页
作者
BARRY J.PIETERS; MATTHIAS LIESS;
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作者单位

UFZ -Centre for Environmental Research,Department of System Ecotoxicology,Permoserstrasse 15,D-04318 Leipzig,Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类环境化学;
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2. Application of individual growth and population models of Daphnia pulex to Daphnia magna, Daphnia galeata and Bosmina longirostris [J] . Asaeda Takashi, Acharya Kumud Hydrobiologia . 2000,第1期

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8. Results of a Toxicity Study in Water Flea (Daphnia magna) with a Developmental Pesticide. [R] . 2013

机译：水蚤（Daphnia magna）与发育农药的毒性研究结果。

Population Developmental Stage Determines the Recovery Potential of Daphnia magna Populations after Fenvalerate Application

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