中文摘要：

异色瓢虫被认为是一种重要的捕食性天敌,常被用来防治蚜虫、介壳虫、叶螨等害虫。为了更好地开发利用东北地区丰富的越冬代异色瓢虫自然资源,本研究调查了低温冷藏（3℃冷藏0,30,60,90,120,150 d）对吉林采集的越冬代异色瓢虫繁殖及其子代生长发育和捕食能力的影响。研究结果表明,经历90 d冷藏的瓢虫产卵量最大,明显高于冷藏60 d个体的产卵量,与冷藏120 d、150 d及未经冷藏个体的产卵量不存在明显差异;经历不同冷藏期的瓢虫与室内人工饲养种群子代具有相似发育历期（约16.0 d）;而且长期冷藏也未对瓢虫子代幼期的捕食能力产生负面影响,冷藏150 d瓢虫的子代在整个幼虫阶段能捕食662.8头蚜虫,与未冷藏个体和人工饲养种群个体不存在明显差异。本研究为开发利用东北地区越冬代异色瓢虫自然资源的生物防治作用提供了理论依据。

英文摘要：

The multicolored Asian ladybird beetle, Harmonia axyridis（ Pallas）（ Coleoptera：Coccinellidae）,is considered an important generalist predator that can be used as a biological control agent against Hemiptera,Sternorrhyncha,Thysanoptera. There are currently abundant natural resources of prewintering H. axyridis in northeastern China. With the objective of better utilizing the resources of natural enemy,here we assessed the effect of cold storage duration（ 0,30,60,90,120,and 150 d stored at3℃） on fecundity of H. axiridis from Jilin and development and predation of their progenies. The results showed that the 90-day-stored females laid the largest number of eggs in 20 d（ 483. 7 eggs）,which were significantly higher than that by 60-day-stored individuals,and similar to those by 0-,120- or 150-daystored ones. The progenies from adults experiencing various storage duration had similar developmental time（ about 16 d） to those from the laboratory population. Long-term cold storage on pre-wintering H. axyridis adults had no impact on predation of their larvae. During the whole larvae stage,total 662. 8 aphids consumed by larvae from 150-day-stored adults were similar to those did by the individuals of 0-day-stored and the laboratory population. These results provide theoretical bases for application of pre-wintering H.axyridis with long-term cold storage in biological control of insect pests.