异色瓢虫捕食胁迫对黑腹果蝇繁殖与后代发育的影响

生态学杂志 ›› 2010, Vol. 29 ›› Issue (03): 554-559.

异色瓢虫捕食胁迫对黑腹果蝇繁殖与后代发育的影响

李燕平^1,2;戈峰^2**

¹中国科学院研究生院,北京 100039； ²中国科学院动物研究所农业虫鼠害综合治理研究国家重点实验室,北京 100101

出版日期:2010-03-10 发布日期:2010-03-10

Effects of predatory stress imposed by Harmonia axyridis on the development and fecundity of Drosophila melanogaster.

LI Yan-ping^1,2;GE Feng²

¹Graduate University of Chinese Academy of Sciences, Beijing 100039, China;²State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China

Online:2010-03-10 Published:2010-03-10

摘要/Abstract

摘要： 以模式昆虫黑腹果蝇(Drosophila melanogaster)及捕食性天敌异色瓢虫(Harmonia axyridis)为研究系统，通过把异色瓢虫接入到有黑腹果蝇的指形管中，研究了黑腹果蝇雌、雄成虫单独或共同被异色瓢虫捕食胁迫后，其自身寿命、子代的生长发育、繁殖和适合度的变化。结果表明：当雄性黑腹果蝇受到异色瓢虫成虫胁迫时，其寿命明显延长，但胁迫与否对雌性黑腹果蝇的寿命无明显影响；当黑腹果蝇的雌雄成虫同时受到胁迫时，其子代幼虫的发育历期延长，雄性后代寿命也增加，而雌性或雄性黑腹果蝇单独受到胁迫，其子代幼虫发育进度没有明显改变；当初孵黑腹果蝇幼虫受到异色瓢虫成虫直接或间接捕食胁迫后，其后续幼虫的发育历期都会受到影响，其中1龄期受到的间接捕食胁迫作用的影响大于直接捕食胁迫作用，直接捕食胁迫1龄幼虫比间接捕食胁迫更能延长其将来雌性成虫的寿命。

关键词: 茶二叉蚜, 门氏食蚜蝇, 大草蛉, 蚜害茶梢, 互利素

Abstract: Model insect Drosophila melanogaster was exposed to its predatory natural enemy Harmonia axyridis to study the responses of the insect in its
development and fecundity. When the male and female D. melanogaster adults were separately exposed to H. axyridis, the lifespan of the males was significantly extended, while that of the females was less affected; when the male and female D. melanogaster adults were exposed together to H. axyridis, the development duration of D. melanogaster larvae and the lifespan of the males were prolonged. There were some changes in the development duration of successive stages when the 1st instar D. melanogaster larvae were exposed directly or indirectly to the predator, being significantly longer under indirect than under direct exposure. To our knowledge, this is the first report to observe the changes in the developmental duration and fecundity of female and/or male D. melanogaster exposed to H. axyridis.

Key words: Toxoptera aurantii, Sphaerophoria menthastri, Chrysopa septempunctata, Aphid-damaged tea shoots, Synomone

李燕平;戈峰. 异色瓢虫捕食胁迫对黑腹果蝇繁殖与后代发育的影响[J]. 生态学杂志, 2010, 29(03): 554-559.