【摘要】 【目的】周氏啮小蜂（海南种群）是寄生椰子织蛾蛹期的本土天敌。研究周氏啮小蜂（海南种群）对椰子织蛾的功能反应,能为该蜂室内扩繁和室外控害利用提供基础。【方法】在室内观察周氏啮小蜂（海南种群）寄生行为基础上,研究了营养（10%蜂蜜）、寄主蛹（初、中、晚）期对周氏啮小蜂（海南种群）寄生功能反应的影响。【结果】镜下观察1头周氏啮小蜂（海南种群）可寄生多头椰子织蛾蛹,寄生量随寄主密度的增大而增加,但当寄主密度达到一定程度后,其增长率随寄主密度的增大逐渐减缓,属于HollingⅡ功能反应。在无营养条件下,周氏啮小蜂（海南种群）对椰子织蛾初、中、晚期蛹的理论最大寄生量分别为1.5、1.4、1.2头·d^-1;在10%蜂蜜饲喂条件下,周氏啮小蜂（海南种群）对椰子织蛾初、中、晚期蛹的理论最大寄生量分别为1.8、1.7、1.3头·d^-1。【结论】HollingⅡ型拟合结果表明,椰子织蛾初期蛹是周氏啮小蜂（海南种群）寄生的最佳时期,补充营养能够提高椰子织蛾的寄生力。更多还原

【Abstract】 【Aim】Chouioia cunea Yang( Hainan population) is a native parasitoid that attacks pupae of Opisina arenosella. To assess the potential of the wasp massive rearing for biological control,we investigated C. cunea functional response on O. arenosella in laboratory conditions. 【Method】We investigated the effects of nutrition( 10% honey) and host stage( early,mid and late pupa) on the functional responses based on observation of its parasitic behavior. 【Result】Endoscopic observations showed that C. cunea attacked more than one host. The number of hosts parasitized by C. cunea increased with increasing host density. However,the increase rate gradually slowed down when the host density reached a certain level and the functional response of C. cunea fit to Holling II. Without nutrition,the theoretical maximum number parasitized by C. cunea was 1.5,1.4 and 1.2 per day when exposed to early,medium and late pupal stages,respectively. With 10% honey,these values increased to 1. 8,1. 7 and 1. 3 per day,respectively.【Conclusion】The fitting results from type Holling II functional response indicated that the early pupae was the optimal stage for parasitizing. Nutritional supplements increased the capacity of parasitism.更多还原