热带作物学报2011，Vol.32Issue(3)：490-494,5.DOI:10.3969/j.issn.1000-2561.2011.03.025
多杀菌素对阿里山潜蝇茧蜂的亚致死效应
Sublethal Effects of Spinosad on the Parasitoid Fopius arisanus (Sonan)
摘要
Abstract
Tested cohorts of the parasitoid Fopius arisanus (Sonan) were reared on a strain of the host, Bactrocera doralis (Hendel), which was sensitive to spinosad. The toxicity tests showed that the LC50 of spinosad for female and male adults of F. arisanus was 0.090 8 mg/mL and 0.027 4 mg/mL, respectively, while the LD50 was 1.0041 mg and 0.804 3 mg, respectively. The effects of diluted 1 000, 2 000 and 3 000 times of spinosad as sublethal concentrations on F. arisanus were observed. The results revealed that all sublethal concentrations could significantly shorten the longevity of F. arisanus, reduce the total fecundity of females and the average fecundity when compared to the control. The parasitism rate and the emergence rate of adults of offspring also decreased with the sublethal concentration increasing of spinosad, but the sex ratio of offspring had no notable difference compared to the control. The simulated equation of the effect of F. arisanus on the eggs of B. doralis corresponded to Holling Ⅱ type model, but the instantaneous attack rate reduced, the handling time prolonged and the searching efficiency declined with the increasing of sublethal concentrations of spinosad. These results suggested that the sublethal concentrations of spinosad would affect significantly the bio-control effect of F.arisanus on B. doralis.关键词
阿里山潜蝇茧蜂/橘小实蝇/多杀菌素/亚致死效应Key words
Fopius arisanus (Sonan)/ Spinosad/ Sublethal effects分类
农业科技引用本文复制引用
王华玲,陈家骅,季清娥,杨建全,王波..多杀菌素对阿里山潜蝇茧蜂的亚致死效应[J].热带作物学报,2011,32(3):490-494,5.基金项目
农业部公益性行业(农业)科研专项(200903047). （农业）
