Concentration–response function of nitrite on survival, molting, and reproduction of Daphnia similoides
Concentration–response function of nitrite on survival, molting, and reproduction of Daphnia similoides
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DOI：
10.1080/02705060.2011.553823
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发表时间：
2011-03
影响因子：
1.3
通讯作者：
Fuhui Xiang;Wei Yang;Zhou Yang;Yafen Chen
中科院分区：
文献类型：
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作者：
Fuhui Xiang;Wei Yang;Zhou Yang;Yafen Chen
我们评估了亚硝酸盐的慢性毒性Daphnia similoides和模拟的浓度-反应函数的亚硝酸盐的生存，蜕皮和繁殖。在为期21天的实验中，随着NO2-N浓度的增加，存活时间、蜕皮次数、每只雌性的总后代数、每只雌性的窝数和每窝的后代数显著下降。每只雌性的总后代数、每只雌性的窝数和每窝的后代数的EC 50分别为1.56、3.99和1.71 mg L−1。四参数逻辑斯蒂模型适合描述浓度-反应函数，并可以估计D.的繁殖指数。在任何浓度的NO2-N下，
We assessed the chronic toxicity of nitrite to Daphnia similoides and modeled the concentration–response function of nitrite on survival, molting, and reproduction. Survival time, number of molting, number of total offspring per female, number of broods per female, and number of offspring per brood decreased significantly with increasing NO2–N concentration during the 21-day experiment. The EC50s for number of total offspring per female, number of broods per female, and number of offspring per brood were 1.56, 3.99, and 1.71 mg L−1, respectively. A four-parameter logistic model was suitable for describing the concentration–response function and allows the estimation of reproduction indices of D. similoides at any given concentration of NO2–N.