寄主卵壳厚度对拟澳洲赤眼蜂寿命和产卵量的影响

本文通过比较拟澳洲赤眼蜂（Ｔｒｉｃｈｏｇｒａｍｍａｃｏｎｆｕｓｕｍ）在不同卵壳厚度的寄主卵一米蛾卵，小菜蛾卵和柞蚕卵上的产卵时间（完成一次产卵动作所需的时间，从开始穿刺到拔出产卵管止）寿命，产卵历期和产卵量，表明寄主卵壳厚度对它们有较大的影响。在卵壳较薄的米蛾卵，产卵时间为１分６秒，雌蜂平均寿命为１２．５５天，产卵有效历期为１０．６４天，产卵雌蜂的平均产卵量为１４６．６４粒，在小菜蛾卵上雌蜂平均为

THE INFLUENCE OF THE THICKNESS OF HOST EGGS CHORION ON THE LONGEVITY AND FECUNDITY OF TRICHOGRAMMA CONFUSUM

The time of oviposition (from the beginning of drilling in the host egg to the pulling out bythe ovipositor), longevity, ovipositional duration and fecundity of Trichogramma confusum on theeggs of Corcyra cephalonica, diamondback moth(Plutella xylostella, DBM) and Antheraea pernyiwere significantly different, The time of oviposition on the egg of C. Cephalonica, and A. pernyiwas 1 minute 16 secondand 1 hour 16 minute, respectively. The longevity of female wasp on egg ofC. cephalonica, DBM and A. pernyi was 12.55, 12.74 and 7 .95 day respectively, The oviposi-tional duration on the three kinds of host egg was 10.64, 10.98and 1. 13 days. The ratio of femalewaspa laidd eggs on the three kinds of host egg was 96.87,96.05,and 60. 87% respectively. The fe-cundity of female wasp in average on three kinds of host egg was 146.64, 134. 17, and 47.21, re-spectively.These seem to be closely related to different thickness of the chorions of three hosts. Thepossible cause of these differences is suggested.