Shu Ying-Hua, Du Yan, Wang Jian-Wu
Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou, China.
Ying Yong Sheng Tai Xue Bao. 2012 Jun;23(6):1562-8.
Standard artificial diet was added with different concentration lead (Pb) to feed herbivorous insect Spodoptera litura larvae to study their growth and reproduction under the effects of Pb stress. With the increasing concentration Pb in the diet, the survival rate and body mass of the larvae at their different development stages (larvae, pupae, and adults) decreased. The minimum concentration of Pb which caused the significant decrease of the survival rate was 100 mg x kg(-1), and that caused a remarkable decrease of body mass was 50 mg x kg(-1). After fed with the diet containing 25-200 mg x kg(-1) of Pb, the duration of laying eggs was significantly shortened. With increasing concentration Pb in the diet, the oviposition rate and fecundity of female adults decreased significantly, the average mass of one thousand eggs was significantly less than that of the control, and the hatching rate of the eggs laid by adults was also decreased significantly. All the results suggested that Pb stress had significant inhibition effects on the growth and reproduction of S. litura.
在标准人工饲料中添加不同浓度的铅（Pb）来喂养植食性昆虫斜纹夜蛾幼虫，以研究铅胁迫对其生长和繁殖的影响。随着饲料中铅浓度的增加，幼虫在不同发育阶段（幼虫、蛹和成虫）的存活率和体重均下降。导致存活率显著下降的铅的最低浓度为100 mg x kg(-1)，导致体重显著下降的铅的最低浓度为50 mg x kg(-1)。用含25 - 200 mg x kg(-1)铅的饲料喂养后，产卵持续时间显著缩短。随着饲料中铅浓度的增加，雌成虫的产卵率和繁殖力显著下降，每千粒卵的平均质量显著低于对照组，成虫所产卵的孵化率也显著降低。所有结果表明，铅胁迫对斜纹夜蛾的生长和繁殖具有显著的抑制作用。
