The occurrence of sequential oviposition in fig wasps and the implications for interpreting sex ratio data

IF 2 3区 农林科学 Q2 ENTOMOLOGY
Simiso P. Mnguni, Tany Labuschagne, Pamela J. de Waal, Simon van Noort, Jaco M. Greeff
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Abstract

Abstract Image

无花果蜂顺序产卵的发生及其对解释性别比数据的影响
无花果授粉黄蜂被认为会根据标准的本地配偶竞争(LMC)理论调整其性别比例。标准的 LMC 理论假定,在一块土地或无花果上产卵的所有母蜂都是同时产卵的。然而,有研究表明,无花果蜂可以按顺序产卵。我们统计了母蜂自然进入的无花果中含有死亡和存活母蜂的无花果数量,以估计顺序和同时产卵的发生率。在两个黄蜂物种中,单个母蜂是常态,而在另外两个物种中,多个母蜂是常态。然而,与 LMC 理论相反的是,在所有四个物种中,当出现多个母亲时,顺序排卵似乎比同时排卵更频繁。因此,无花果蜂母亲所面临的性别分配问题比人们普遍认为的同时产卵情况要复杂得多,这也导致了几种预期。单亲母蜂的性别比例应该随着额外母蜂出现的概率增加而增加。自然形成的多母亲无花果的性别比例应该比标准LMC模型预测的最终母亲数量更偏向于雌性。这是因为早来的母亲低估了母亲的数量,产下的女儿数量超过了最终母亲数量的要求,而晚来的母亲可以产下较少的儿子,以便与第一批母亲过于偏重雌性的产卵竞争。母亲必须在其所经历的女始祖鸟密度的概率范围内优化性别比例。
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来源期刊
Ecological Entomology
Ecological Entomology 生物-昆虫学
CiteScore
4.90
自引率
4.50%
发文量
94
审稿时长
3 months
期刊介绍: Ecological Entomology publishes top-quality original research on the ecology of insects and related invertebrate taxa. Our aim is to publish papers that will be of considerable interest to the wide community of ecologists who are motivated by ecological or evolutionary theory. The suitability of a manuscript will usually be assessed within 5 days. We publish full-length Original Articles as well as Reviews, Short Communications, Methods and Natural History papers. In Original Articles, we greatly prefer papers that test specific hypotheses and which have a high degree of novelty. All categories aim for innovative contributions that advance the subject of ecological entomology.
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