Sexual dimorphism in head size in wild burying beetles

IF 2 3区 农林科学 Q2 ENTOMOLOGY
Jack M. L. Smith, Andrew M. Catherall-Ostler, Rahia Mashoodh, Rebecca M. Kilner
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引用次数: 0

Abstract

Abstract Image

野生掩埋甲虫头部大小的性双态性
掩埋甲虫(Nicrophorus vespilloides)被认为主要是单性的。雄虫有一个额外的腹节并能产生信息素,除此之外雌虫和雄虫是一样的。雌雄蝶的黑色背甲上都有鲜艳的橙色条带,这可能是警示而非择偶的一部分。在野生种群中,雌雄的平均体型没有差异,体型的变化也没有差异。在这里,我们描述了野生种群中一种以前被忽视的性别体型二态性。我们表明,在任何给定的前胸宽度(体型)下,雄性的头都比雌性的宽,而且雄性的头宽和前胸宽度之间的比例关系是超等距的,而雌性的头宽和前胸宽度之间的比例关系是等距的。我们还展示了栖息在相距约 10 千米的不同林地中的 7 个野生种群的绝对头宽以及头宽的性别二形性程度是如何不同的。我们认为,头部大小的二态性在功能上与咬合力有关。我们假设,这种二态性可能是由于在双亲照料过程中,由于任务的特殊化而产生的不同选择,因为雄性喜欢的照料任务可能需要更大的咬合力。
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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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