日本细毛环腹瘿蜂生物学特性研究

日本细毛环腹瘿蜂为斑翅果蝇幼虫优势寄生性天敌之一,对斑翅果蝇具有较大的控制潜能.本研究以斑翅果蝇为寄主,在实验室条件下,通过饲养与观察,研究了日本细毛环腹瘿蜂的寿命、行为节律、寄主选择、生长发育及繁殖.结果显示:不同营养条件下,寄生蜂寿命长短依次为20％蜂蜜水＞10％蜂蜜水＞清水＞对照.寄生蜂羽化期为8d,第4天为羽化...

Study on biological characteristics of Leptopilina japonica

Leptopilina japonica is one of the dominant parasitic natural enemies of Drosophila suzukii larvae, and has great potential for controlling D. suzukii. In this study, D. suzukii was used as the host. Through breeding and observation, the longevity, behavior rhythm, host selection, growth and development, and reproduction of L. japonica were studied under laboratory conditions. The results showed that, the life span of parasitoid varied under different nutritional conditions: 20% honey water> 10% honey water> clear water> control. L. japonica emergence period is 8 days and on the 4th and the daily from 10:00-12:00 is peak of emergence; the peak of oviposition activity occurred at 16:00-18:00. Parasitic D. suzukii larvae at different developmental stage have no effect on the survival rate of parasitoid larvae, but significantly influence the survival rate of pupae, the progeny sex ratio, and the total developmental duration. Parasitizing 2nd instar larvae has better fitness and also prefer to 2nd instar larvae of D. suzukii. At the age of 3 days, the peak oviposition of L. japonica was reached to 13.38 individual, with an average of 147.50 eggs per female. The egg, larval, male pupal and female pupal duration of L. japonica was 1.30 d, 8.67 d, 8.86 d and 10.27 d, respectively. The emergence time of the male was 1.41 d earlier than that of female. The results suggest that the L. japonica can be used as a potential and effective biological control material in D. suzukii control.