胡帅,罗立平,王小艺.白蜡吉丁肿腿蜂不同姊妹窝子代翅型分化和性比变化[J].林业科学研究,2019,32(5):21-26
白蜡吉丁肿腿蜂不同姊妹窝子代翅型分化和性比变化
Wing Dimorphism and Sex Ratio Changes in Progeny of Various Sister Broods in Parasitoid Sclerodermus pupariae (Hymenoptera: Bethylidae)
投稿时间:2019-02-19  修订日期:2019-03-12
DOI:10.13275/j.cnki.lykxyj.2019.05.003
中文关键词:  白蜡吉丁肿腿蜂  母代效应  姊妹窝  寄生作用  有翅率  性比  适合度
英文关键词:Sclerodermus pupariae  maternal effect  sister brood  parasitic effect  percentage of winged female  sex ratio  fitness
基金项目:国家重点研发计划资助项目(2018YFC1200400)
作者单位E-mail
胡帅 中国林业科学研究院森林生态环境与保护研究所, 国家林业和草原局森林保护学重点实验室, 北京 100091  
罗立平 中国林业科学研究院森林生态环境与保护研究所, 国家林业和草原局森林保护学重点实验室, 北京 100091  
王小艺 中国林业科学研究院森林生态环境与保护研究所, 国家林业和草原局森林保护学重点实验室, 北京 100091 xywang@caf.ac.cn 
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中文摘要:
      [目的]探究具有多次产卵习性的寄生蜂不同姊妹窝子代种群参数的变化,从母代效应角度明确寄生蜂在自然栖境中增殖和延续种群的机制。[方法]室内30℃±1℃,光周期14L︰10D,相对湿度65%±5%的条件下测定了白蜡吉丁肿腿蜂在其成虫寿命期内所有姊妹窝子代产出过程中对麻竖毛天牛幼虫的寄生作用,比较各姊妹窝子代中雌蜂数量、发育历期、有翅型雌蜂比例和性比等参数的变化。[结果]白蜡吉丁肿腿蜂雌蜂对寄主幼虫的寄生能力和自身的产雌数量逐渐减低;各姊妹窝子代中雌性有翅率逐次递减,其中第3姊妹窝子代降幅最大,直至为零;各姊妹窝子代的雌雄性比呈抛物线趋势,第3姊妹窝子代雌雄性比接近1:1。[结论]白蜡吉丁肿腿蜂姊妹窝子代间翅的非遗传多型性可能是该蜂在应对林间异质环境的一种适应性进化。白蜡吉丁肿腿蜂第3姊妹窝子代的产出可能是其成虫寿命期内调控翅型和性比达到种群适合度最大化的关键节点。
英文摘要:
      [Objective] This study aims to explore the changes of population parameters among different sister broods in parasitoids with multiple host attacking habit, so as to explain the mechanisms of expanding and sustaining population from the perspective of maternal effects.[Method] The parasitism on Thyestilla gebleri larva of Sclerodermus pupariae was studied during the production of successive sister broods in its lifetime. The number of female progeny, developmental duration, percentage of winged female, sex ratio and the other parameters of all the sister broods were recorded in the laboratory under the conditions of 30℃, photoperiod of 14L:0D, and RH 65% ±5%.[Result] The parasitism ability on host larvae and brood sizes reduced gradually. The percentage of winged females decreased with the number of produced sister broods till to zero, with the most dramatic decrease in the third sister brood. The sex ratio of progeny showed a parabolic trend at various successive sister broods and it was close to 1:1 for the third sister brood.[Conclusion] Wing polyphenism in various sister broods of S. pupariae may reflect adaptive evolution of this parasitoid coping with heterogeneous environment of forest. The production of the third sister brood might be a key point for regulating wing morph and sex ratio of progeny to maximize the fitness of the population in the lifetime in S. pupariae.
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