《环境昆虫学报》

作者	单位
周长青，詹海霞，肖春，张金平	1.北京市海淀区农业执法大队，北京 100085；2.农业农村部 CABI生物安全联合实验室，中国农业科学院植物保护研究所，北京 100193；3.云南农业大学植物保护学院，昆明 650201；4.CABI东亚中心，北京 100081

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中文摘要:

蝇蛹金小蜂是铃木氏果蝇和黑腹果蝇的重要天敌，本研究以黑腹果蝇为寄主，测定了蝇蛹金小蜂云南种群的生长发育、繁殖及寿命。并在6个寄主密度梯度条件下研究了其寄生功能反应。结果显示蝇蛹金小蜂从卵到雌、雄成蜂的平均发育历期分别为16.10 d和14.67 d，雌蜂平均寿命为49.76 d，平均产子代数为93.28头/雌，子代雌性比为55.76%。在黑腹果蝇蛹为5、10、15、20、25和30头的密度梯度下，蝇蛹金小蜂的寄生功能反应符合Holling II模型，其方程为Na=0.6261 No/(1+0.0632 No)。理论最高寄生量为Na max=9.0171，实际最高寄生量为7.00头（寄主密度为20头），蝇蛹金小蜂的寄生搜寻效应随寄主密度的增加而降低。综上结果，采自杨梅的蝇蛹金小蜂以黑腹果蝇作为寄主时具有较高繁殖力，较强的寄主适合度，是铃木氏果蝇和黑腹果蝇有效的生物防治作用因子。

英文摘要:

Pachycrepoideus vindemmiae is a nature enemy against Drosophila suzukii and Drosophila melanogaster.We tested the development, fecundity and life time of Yunnan strain P.vindemmiae on D.melanogaster. In addition, the functional response of P.vindemmiaewas tested on six different host densities (5,10,15,20,25 and 30 pupa of D.melanogaster). The development period from egg to adult of female and male were 16.10 d and 14.67 d, respectively.The average longevity of female adult was 4976 d, the average number of progeny was 93.28 per female, and the proportion of female progeny was 55.76%. The parasitic functional response of P.vindemmiaewas fitted to Holling II type.The curve was described as Na=0.6261 No/ (1+0.0632 No). The maximum number of theoretical parasitism was N amax=9.0171, the maximum number of actual parasitism was 7.00 (20 pupa were provided). The searching efficiency ofP.vindemmiae decreased with the increased host density.We conclude that P.vindemmiaecollected from bayberry has higher fecundity and fitness on D.melanogaster,so it is potential efficient biological control agent against D.suzukii and D.melanogaster.

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