作　　者： ; ; ; ; ; ; ;

机构地区： 扬州大学农学院植物保护系

出　　处： 《昆虫学报》 2005年第6期943-948,共6页

摘　　要： 椰甲截脉姬小蜂Asecodes hispinarumBoucˇek是椰心叶甲Brontispa longissima(Gestro)幼虫的重要内寄生蜂,2004年3月从越南引进到海南省。在实验室条件下,对椰甲截脉姬小蜂的形态、发育、繁殖、寄生潜能等生物学特性进行了初步研究。结果表明,椰甲截脉姬小蜂在24℃±2℃,RH75%±10%条件下,卵期平均为2.8天,幼虫期6.7天,蛹期(含预蛹期)7.5天;成蜂在没有营养补充的情况下,平均存活2.5天。椰甲截脉姬小蜂的寿命受温度和补充营养的影响,雌蜂寿命长于雄蜂寿命。雌蜂平均怀卵量为43粒,产卵高峰期在交配后的12h内。椰甲截脉姬小蜂对椰心叶甲4龄幼虫的功能反应属HollingⅡ型,随自身密度的增加其寄生效果呈下降的趋势。 Asecodes hispinarum Boucek, an important larval endoparasitoid of Brontispa longissima （Gestro）, was introduced into Hainan Province of China from Vietnam in March, 2004. The morphology, development, reproduction and reproductive potential of this wasp parasitoid were studied. The results showed that under the laboratory condition of 24℃± 2℃ and RH 75% ± 10%, the mean developmental duration of egg, larva and pupa were 2.8 days, 6.7 days, and 7.5 days, respectively; the longevity of adults without nutritional supplement was 2.5 days on average. Both the temperature and nutritional supplement affected the longevity of adults, and the mean longevity of female adults was longer than that of male adults. Fecundity （per female） was 43 on average and the peak of oviposition occurred within 12 hours after mating. The functional response of A. hispinarum to 4th instar larvae of B. longissima belonged to Holling＇ s type Ⅱ , and the parasitization efficiency of A. hispinarum decreased with the inereasing of A. hispinarum density.

关 键 词： 椰心叶甲 椰甲截脉姬小蜂 生物防治 生物学特性 温度 营养 功能反应

领　　域： [生物学]