中国生物防治学报2024，Vol.40Issue(2)：248-256,9.DOI:10.16409/j.cnki.2095-039x.2024.01.004
蠋蝽成虫对黏虫生长发育和繁殖的非取食效应
Non-consumptive Effects of the Predatory Stinkbug Arma custos Adults on Growth,Development and Reproduction of the Oriental Armyworm Mythimna separata
摘要
Abstract
The impact of predator natural enemies on pests is generally assessed in laboratory by measuring the number of prey individuals preyed by a predator or other metrics based on it.But this approach does not consider the potential negative impact on the behavior,development,or reproduction of the prey exerted by the presence of predators,i.e.,the so-called non-consumptive effects.This report presents our laboratory study aiming at investigating non-consumptive effects of the predatory stinkbug Arma custos on the life history traits of the oriental armyworm Mythimna separata.Larvae of M.separata were individually exposed to a stinkbug adult in a petri-dish containing artificial diets for a certain period of time with three treatments of the exposure:5 days in the early stage from 4th to 8th day after hatching,referred to as"Early risk";5 days in the late stage from 9th to 13th day after hatching,as"Late risk";and the whole larval stage,as"Throughout risk".The control larva was left alone.Body masses of both the 8-and 13-day old larvae were individually measured;developmental durations of larvae and pupae and pupal body mass were measured;number of eggs laid during lifetime was counted.Body mass of the 8-day old caterpillars increased by 11.5%for the early-risk and 12.0%for the throughout-risk,as compared with the control(57.67 mg).Body mass of the 13-day old caterpillars were not affected by the treatment.Caterpillar development time was shortened by 2.2%for the Early-risk compared to the control(14.5 d).Caterpillar pupal body mass was reduced to 423.49 mg for the Early-risk and to 417.65 mg for the Throughout-risk,as compared to the control(446.76 mg).Pupal duration,adult pre-oviposition period,oviposition period and lifetime fecundity of M.separata were not influenced by the non-consumptive risk treatment.The results suggest that A.custos may have a slight non-consumptive effect on M.separata when the risk occurs at the early larval stage but may not when the risk occurs at the late larval stage,and there may not be non-consumptive effects on fecundity of M.separata.关键词
捕食性蝽/捕食者-猎物互作/捕食者威胁/特征介导效应/生物防治Key words
predatory heteropteran/predator-prey interactions/predator risk/trait-mediated effects/biological control分类
农业科技引用本文复制引用
张雅倩,曲毓立,李保平..蠋蝽成虫对黏虫生长发育和繁殖的非取食效应[J].中国生物防治学报,2024,40(2):248-256,9.基金项目
国家重点研发计划(2017YFE0104900,2017YFD02010000) （2017YFE0104900,2017YFD02010000）
