中国生物防治学报2023，Vol.39Issue(5)：1029-1037,9.DOI:10.16409/j.cnki.2095-039x.2022.11.025
短时低温胁迫对日本食蚧蚜小蜂存活、发育及繁殖的影响
Effects of Short-term Low Temperature Stress on Survival,Development and Reproduction of the Coccophagus japonicus Compere
摘要
Abstract
This study aims to investigate the effects of short-term low-temperature stress on the survival,development and reproduction of Coccophagus japonicus Compere.Larvae and pupae of the wasps were stressed at three temperature levels,2,4 and 6℃for 0.5,1 and 2 d,respectively.The survival rate,developmental duration,body length,initial egg load,and female longevity of these stressed C.japonicus were assessed.Additionally,the resulting adults were exposed to 2,4 and 6℃for survival analysis.The results showed that the survival rates of larvae and pupae,the body length,the initial egg load,and the female longevity of C.japonicus were positively correlated with the temperature and negatively correlated with the duration of stress,when the wasps experienced at their larva-or pupa-stage.Also,the developmental duration was negatively correlated with the temperature and positively correlated with the duration of stress.With the decrease of temperature and the prolongation of stress time,the survival rate of larvae and pupae of C.japonicus decreased,the developmental period was prolonged,the body length was shortened,the initial egg load and the female longevity were reduced.When the adults experienced the low temperatures(2,4 and 6℃),the LT50 was significantly shorter than that at 27℃.The LT50 of adults decreased with the decrease of temperature,being 4.88,3.39 and 1.64 d at 6,4 and 2℃,respectively.In conclusion,the short-term low temperature stress is detrimental to the population growth of the C.japonicus.Therefore,the annual low temperature and duration should be considered when applying this wasp in the field for control of Parasaissetia nigra Nietner.关键词
日本食蚧蚜小蜂/短时低温胁迫/存活/发育/繁殖Key words
Coccophagus japonicus/short-term low temperature stress/survival/development/reproduction分类
农业科技引用本文复制引用
杨美娟,陈俊谕,叶政培,符悦冠,王建赟,朱俊洪,张方平..短时低温胁迫对日本食蚧蚜小蜂存活、发育及繁殖的影响[J].中国生物防治学报,2023,39(5):1029-1037,9.基金项目
海南省自然科学基金(321RC458,321RC623) （321RC458,321RC623）
国家现代农业产业技术体系(CARS-33-GW-BC2) （CARS-33-GW-BC2）
