首页|Tissue distribution of cadmium and its effect on reproduction in Spodoptera exigua
Tissue distribution of cadmium and its effect on reproduction in Spodoptera exigua
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
国家科技期刊平台
NETL
NSTL
万方数据
维普
Vegetable fields are often contaminated by heavy metals,and Spodoptera exigua is a major vegetable pest which is stressed by heavy metals mainly by feeding.In this study,cadmium accumulation in the tissues of S.exigua exposed to cadmium and its effects on the growth and development of the parents and the offspring were investigated.Under the stress of different concentrations of cadmium(0.2,3.2,and 51.2 mg kg-1),the cadmium content in each tissue of S.exigua increased in a dose-dependent manner.At the larval stage,the highest cadmium accumulation was found in midgut in all three cadmium treatments,but at the adult stage,the highest cadmium content was found in fat body.In addition,the cadmium content in ovaries was much higher than in testes.When F1 S.exigua was stressed by cadmium and the F2 generation was not fed a cadmium-containing diet,the larval survival,pupation rate,emergence rate and fecundity of the F2 generation were significantly reduced in the 51.2 mg kg-1 treatment compared to the corresponding F1 generation.Even in the F2 generation of the 3.2 mg kg-1 treatment,the fecundity was significantly lower than in the parental generation.The fecundity of the only-female stressed treatment was significantly lower than that of the only-male stressed treatment at the 3.2 and 51.2 mg kg-1 cadmium exposure levels.When only mothers were stressed at the larval stage,the fecundity of the F2 generation was significantly lower than that of the F1 generation in the 51.2 mg kg-1 treatment,and it was also significantly lower than in the 3.2 and 0.2 mg kg-1 treatments.The results of our study can provide useful information for forecasting the population increase trends under different heavy metal stress conditions and for the reliable environmental risk assessment of heavy metal pollution.
heavy metal pollutioncadmiumSpodoptera exiguatissue distributionreproduction
Honghua Su、Menglu Wu、Yong Yang、Yan Deng、Yizhong Yang、Qingming Sun
展开 >
College of Plant Protection,Yangzhou University,Yangzhou 225009,China
Institute of Fruit Tree Research,Guangdong Academy of Agricultural Sciences/Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization,Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Tropical and Subtropical Fruit Tree Research,Guangzhou 510640,China
Open Project Program from the Key Laboratory of South Subtropical Fruit Biology and Genetic Resource Utilization(Ministry of
国家科技期刊平台
NSTL
万方数据
维普
