Non-toxic and toxic Microcystis aeruginosa reduce the tolerance of Daphnia pulex to low calcium in different degrees: Based on the changes in the key life-history traits

	Non-toxic and toxic Microcystis aeruginosa reduce the tolerance of Daphnia pulex to low calcium in different degrees: Based on the changes in the key life-history traits
	Huang, Jing; Li, Yurou; Zhou, Qiming; Sun, Yunfei; Zhang, Lu; Gu, Lei; Lyu, Kai; Huang, Yuan; Chen, Yafen; Yang, Zhou
刊名	CHEMOSPHERE
	2020
卷号	248
英文摘要	Calcium decline and cyanobacterial blooms pose a serious threat to the crustacean zooplankton Daphnia, which has a high demand for calcium. In the present study, we exposed two different clones of Daphnia pulex to different combinations of calcium concentrations (0.1, 0.5, 1.0, 5.0, 10.0 mg L-1) and food types (100% Chlorella; 80% Chlorella and 20% non-toxic Microcystis; 80% Chlorella and 20% toxic Microcystis) for 16 days, recorded the key life-history traits, and then used an exponential rise function to fit the traits. Results showed toxic Microcystis and low calcium together negatively affected the survival, development, and reproduction of Daphnia. The negative effect of non-toxic Microcystis and low calcium only affected the development and reproduction. The survival time and reproductive performance increased exponentially with increasing calcium concentration and then approached an asymptotic maximum. Both non-toxic and toxic Microcystis reduced the asymptotic maximum of the reproductive performance. The rising rate at which they reached the asymptotes differed significantly among the three food types; i.e., the reproductive performance of Daphnia was affected in a wider range of calcium concentrations under bad food quality. The findings indicated that Microcystis impaired the tolerance of Daphnia to low calcium, which may cause serious consequences in freshwater ecosystems. (C) 2020 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20165]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Huang, Jing,Li, Yurou,Zhou, Qiming,et al. Non-toxic and toxic Microcystis aeruginosa reduce the tolerance of Daphnia pulex to low calcium in different degrees: Based on the changes in the key life-history traits[J]. CHEMOSPHERE,2020,248.
APA	Huang, Jing.,Li, Yurou.,Zhou, Qiming.,Sun, Yunfei.,Zhang, Lu.,...&Yang, Zhou.(2020).Non-toxic and toxic Microcystis aeruginosa reduce the tolerance of Daphnia pulex to low calcium in different degrees: Based on the changes in the key life-history traits.CHEMOSPHERE,248.
MLA	Huang, Jing,et al."Non-toxic and toxic Microcystis aeruginosa reduce the tolerance of Daphnia pulex to low calcium in different degrees: Based on the changes in the key life-history traits".CHEMOSPHERE 248(2020).