寄主龄期和温度对长尾潜蝇茧蜂和切割潜蝇茧蜂种间竞争的影响  

Effects of host age and temperature on the interspecific competition between Diachasmimorpha longicaudata(Shmead) and Psyttlia incise(Silvestri)

作　　者：杨建全[1] 吕增印[1] 陈家骅[1] 黄居昌[1] 季清娥[1] 何榕宾[1] 

机构地区：[1]福建农林大学植物保护学院,福建福州350002

出　　处：《福建农林大学学报（自然科学版）》2008年第5期453-455,共3页Journal of Fujian Agriculture and Forestry University:Natural Science Edition

基　　金：福建省科技厅资助项目(2005N009;2006NZ002)

摘　　要：结果表明,长尾潜蝇茧蜂对高龄幼虫有明显的竞争优势,以2龄、3龄幼虫作为寄主时,混合接蜂的长尾潜蝇茧蜂的寄生率显著高于切割潜蝇茧蜂;以1龄幼虫作为寄主,切割潜蝇茧蜂的寄生率显著高于长尾潜蝇茧蜂.与其单独接蜂相比,长尾潜蝇茧蜂寄生率没有变化,而切割潜蝇茧蜂寄生率明显下降.温度对2种寄生蜂的寄生有显著影响,在25、30℃下长尾潜蝇茧蜂的寄生率明显高于切割潜蝇茧蜂,在20或35℃条件下这2种蜂的寄生率没有差异.The result showed that parasitism rates of Diachasmimorpha longicaudata were significantly higher than those of Psyttlia incise when the second and third instar larva of Bactrocera dorsalis （Hendel） were exposed to the two parasitoids, but the results were reverse when first instar larva were exposed to them. As compared with those exposed to one species at a time, the parasitism rates of D. longicaudata were not affected, but those of P. incise were significantly reduced. Under the condition of 25 ℃ and 30 ℃, the parasitism rates of D. longicaudata were significantly higher than P. incise. The paraaitism rates of above 2 species were not significantly different at 20 ℃ and 35 ℃.

关 键 词：切割潜蝇茧蜂 长尾潜蝇茧蜂 橘小实蝇 种间竞争 

分 类 号：Q969.456.8[生物学—昆虫学]