ClO4-与As5+复合污染对斜纹夜蛾食物利用的影响

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摘要

通过在人工饲料中添加不同浓度组合的ClO₄^- 与As⁵⁺, 研究ClO₄^- 与As⁵⁺复合污染对斜纹夜蛾食物利用的影响。结果表明:第1 d 时,对照A0B0 的相对生长率RGR 为2.23%,最高A1B3 的RGR 为3.75%,显著高于其他处理,最低A3B5 的RGR 为 1.01%; 第3 d 时,A3B4 的食物消化率ECI 和消化转化率ECD 在所有处理组合中最低:分别为28.61%和36.29%。而第5 d 时A3B1-A3B5 仍然具有较高的近似消化率AD。由此可知,在低浓度As⁵⁺作用的ClO₄^- 与As⁵⁺复合污染会促进斜纹夜蛾幼虫的生长,但是当As⁵⁺过高时的复合污染,便会抑制其生长。究其原因在于低浓度复合污染胁迫下,斜纹夜蛾幼虫提高了对食物的利用和转化能力,以获取更多营养供幼虫生长需要。而高浓度ClO₄^- 与As⁵⁺复合污染胁迫可能扰乱昆虫取食行为,阻碍其生长发育。这对进一步揭示ClO₄^- 与As⁵⁺复合污染对斜纹夜蛾的毒理效应和机理研究具有指导意义。

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	秦俊豪
	顾忱
	舒迎花
	王登科
	李君菲
	温莹
	黎华寿

关键词 ： ClO4- 与As5+复合污染, 斜纹夜蛾, 食物利用

Abstract：

Spodoptera litura larvae were exposed to different concentrations of CA (compound contamination of ClO₄^- and As⁵⁺) in the artificial diets, and the effects of CA on the food utilization of S. litura were investigated. The results showed that the highest RGR of A1B3 was 3.75% and showed significantly difference among treatments on the 1^st day. The lowest of A3B5 was 1.01% and the control of A0B0 was 2.23%. On the 3^rd day, the lowest ECI and ECD of A3B4 were 28.61% and 36.29%, respectively. However, the treatments of A3B1 to A3B5 still had higher AD on the 5^st day. The growth of insect larvae could be stimulated by CA under low concentrations of As⁵⁺, but inhibited by CA under high concentrations of As⁵⁺. Furthermore, the food utilization and transformation ability of larvae were improved in order to intake more nutrition for larvae growth in low CA. In contrast, the high CA inhibited larvae growth and disturbed feeding behavior. These results will provide guide significance on the toxicological effects and mechanisms of CA on S. litura.

Key words： compound contamination of ClO4- and As5+ (CA) Spodoptera litura

收稿日期: 2013-06-25

X503.223

基金资助:国家重点基础研究“973”项目(2011CB100406);国家自然科学基金项目(41271479)

引用本文:

秦俊豪, 顾忱, 舒迎花, 王登科, 李君菲, 温莹, 黎华寿*. ClO4-与As5+复合污染对斜纹夜蛾食物利用的影响[J]. , 2013, 32(3): 338-344.
Qin Jun-hao, Gu Chen, Shu Ying-hua, Wang Deng-ke, Li Jun-fei, Wen Ying, Li Hua-shou*. Effect of compound contamination of arsenate and perchlorate on food utilization of Spodoptera litura. , 2013, 32(3): 338-344.

链接本文:

http://www.ecolsci.com/CN/Y2013/V32/I3/338

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