【摘要】 豆野螟Maruca vitrata(Fabricius)是一种严重的泛热带豆类蔬菜害虫。本文研究了豆野螟延迟交尾和多次交尾对其生殖的影响。延迟交尾实验结果表明:豆野螟雌雄同时延迟交尾,雌雄虫的寿命、产卵量均表现为先上升后下降的趋势,但是对卵的孵化率没有显著影响;雌虫延迟交尾,随着延迟时间的增加,雌虫的寿命、产卵量、卵的孵化率表现为下降的趋势,而雄虫的寿命延迟交尾第3天达到最大值;雄虫延迟交尾,随着延迟交尾时间的增加,雌雄虫的寿命、产卵量均表现为先上升后下降的趋势,卵的孵化率随着延迟逐渐下降。多次交尾实验结果表明,随着雄虫交尾次数的增加,成功交尾率逐渐降低,用于交尾的时间延长,雌虫和相应雄虫的寿命逐渐缩短,雌虫的产卵量下降,但对卵的孵化率影响不大;豆野螟雌虫一生只交尾一次,未见到雌虫2次交尾。更多还原

【Abstract】 The legume pod borer,Maruca vitrata( Fabricius),is a serious pantropical insect pest of grain legumes. The reproduction of M. vitrata when mating was delayed,or after multiple mating,was investigated. The longevity of both sexes and female fecundity first increased then reduced,but hatching rate did not change much when males and females were prevented from mating for the same period of time. Female longevity,fecundity and hatching rate reduced,but the longevity of males first increased then reduced when females were prevented from mating. The longevity of both sexes and female fecundity first increased then reduced,but hatching rate declined when males were delayed from mating. The mating success rate,the longevity of both sexes and female fecundity all reduced when males mated multiple times. Mating duration was prolonged,and hatching rate did not change much. Males can mate 4 times in their life-span but females can mate only once.更多还原