Effects of Cd2+ exposure on key life history traits and activities of four metabolic enzymes in Helicoverpa armigera (Lepidopteran: Noctuidae)

文献类型： 外文期刊

第一作者： Chen, Zhu

作者： Chen, Zhu;Huang, Yongjie;Yang, Shiyong;Zhang, Jinping;Ruuhola, Teija;Yang, Shiyong

作者机构：

关键词： Environmental pollution;cotton bollworm;life history traits;cadmium stress;detoxification enzymes

期刊名称：CHEMISTRY AND ECOLOGY （ 影响因子：2.244； 五年影响因子：1.933 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Cadmium (Cd) is a toxic non-essential element accumulated easily in living organisms due to its non-biodegradable nature. A slight increase in Cd levels will threaten the health of terrestrial and aquatic organisms. Therefore, Cd contamination and its effects on the ecosystems and organisms have become a major topic of eco-toxicological research. The present study investigated the eco-toxicological effects of Cd-supplemented diet on some life history traits and specific enzyme activities of carboxylesterase (CarE), glutathione S-transferase (GST), acetylcholinesterase (AChE) and cytochrome P450 monooxygenases (P450s) in the cotton bollworm, Helicoverpa armigera. The results showed that Cd significantly decreased larval survival, pupation and emergence, and reduced body mass of the sixth instar larvae, pupae, adult moths and female fecundity. Cd-supplemented diet also delayed the development of larvae and pupae and shortened the life span of the cotton bollworm moth. In addition, dietary Cd inhibited the activities of GST, CarE and P450, but increased AChE activity of the sixth instar larvae. We concluded that life history traits and metabolic enzymes are sensitive to Cd stress in the cotton bollworm. These parameters are potential biomarkers for monitoring environmental stress in Lepidopteran insect pests.

分类号： O6`X17

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