华南农业大学学报2012，Vol.33Issue(4)：465-469,5.
寄主龄期对前裂长管茧蜂寄生与生长发育的影响
Effects of Host Age on the Reproduction and Development of Diachasmimorpha longicaudata
摘要
Abstract
At the temperature of 26 ℃ , effects of host age on the development and reproduction of Diachasmimorpha longicaudata ( Ashmead) , reared with the larvae of oriental fruit fly, Bctrocerat dorsalis (Hendal) , was investigated from the aspects of the parasitical efficiency,immature survival rate, wasp body size and sex ratio of its offspring, respectively. The results showed that host age had an obvious influence on the development and reproduction of D. longicaudata. Female wasps preferred to parasitize the 2cd instar and the initial 3rd instar larvae of oriental fruit fly, and the number of 63. 00 and 85. 50 host larvae parasitized at the corresponding ages were observed within 6 hours. But only 35. 60 and 33. 21 host larvae were parasitized when provided with the 1st instar and the old 3rd instar oriental fruit fly larvae, respectively. Development rate of D. longicaudata decreased with the increase of rearing host age. The generation development of D. longicaudata were 18. 5, 18. 9, 19. 6 and 22. 0 days when reared with the 1st instar, 2nd instar, initial 3rd and old 3rd fly larvae, respectively, and the corresponding immature survival rates were 16. 40% , 46. 88% , 54. 09% and 26. 29% , respectively. The development of D. longicaudata was greatly blocked at the 1st instar and old 3 rd oriental fruit fly larvae. Body size of offspring wasps mainly depended on host' s ages, and the smallest wasps were observed from those lst instar oriental fruit fly larvae. However, a female-based sex ratio of offspring wasps was only exhibited in the initial 3 rd instar oriental fruit fly larvae, and the ratio of female offspring wasps was 64. 11%.关键词
橘小实蝇/前裂长管茧蜂/寄主龄期/寄生/生长发育Key words
Bctrocera dorsalis/Diachasmimirpha longicaudata/host age/reproduction/development分类
生物科学引用本文复制引用
陈科伟,邵屯,刘春燕,曾玲..寄主龄期对前裂长管茧蜂寄生与生长发育的影响[J].华南农业大学学报,2012,33(4):465-469,5.基金项目
公益性行业(农业)科研专项经费项目(200903047) （农业）
广东省农业标准化项目(粤农函[2010]10号) （粤农函[2010]10号）
