螳螂雄性生殖器的功能形态(昆虫亚目:螳螂亚目)

IF 1.7 3区 农林科学 Q2 ENTOMOLOGY Arthropod Structure & Development Pub Date : 2023-05-01 DOI:10.1016/j.asd.2023.101267
Evgeny Shcherbakov
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引用次数: 0

摘要

螳螂的雄性生殖器非常复杂,但我们对它们的功能知之甚少。我将一对交尾的欧洲螳螂(mantis religiosa)的显微计算机断层扫描与各种螳螂交尾的公开视频以及文献分析相结合。审查了每个主要要素的功能。共沉积分为三个阶段:开启、锚固和沉积。开口是通过用雄性顶端突拉动雌性生殖下板来实现的。观察到多起女性合作或抵抗案件,以及一起男性胁迫案件。在顶端突起减少的物种中,雌性的合作是强制性的。男性生殖器下板可以作为生殖器的一个组成部分参与开口。打开后,生殖器的构象发生剧烈变化,显示出生殖器乳头的活动。尽管性冲突理论的总体复杂性和预测性,但对女性生殖器的严格控制只能通过对右阴茎的钳制来维持。其他突出的元素表现出有节奏的运动,但它们的功能并不完全清楚,显然涉及精囊沉积、雌性刺激或竞争性精子去除。Mantodea和Blattodea的开口和锚定相似,但使用非同源元件实现。
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Functional morphology of the praying mantis male genitalia (Insecta: Mantodea)

Male genitalia in praying mantids are highly complex, but we know little of how they function. I combined the micro-computed tomography of a copulating pair of the European mantis (Mantis religiosa) with public videos of copulation in various species of Mantodea and an analysis of literature. The function of each major element is reviewed. Copulation is divided into three phases: opening, anchoring and deposition. The opening is achieved by pulling the female subgenital plate with the male apical process. Multiple cases of female cooperation or resistance were observed and one case of coercion by the male. In species with the reduced apical process, female cooperation is mandatory. The male subgenital plate may participate in the opening as an integral part of the genitalia. After the opening, the conformation of the genitalia drastically changes, revealing activity of the genital papilla. Tight grasp on female genitalia is maintained solely by the clamp on the right phallomere, despite the overall complexity and predictions of sexual conflict theory. Other prominent elements show rhythmic motions, but their functions are not entirely clear and evidently involve spermatophore deposition, female stimulation or rival sperm removal. The opening and anchoring are similar in Mantodea and Blattodea, but achieved with non-homologous elements.

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来源期刊
CiteScore
3.50
自引率
10.00%
发文量
54
审稿时长
60 days
期刊介绍: Arthropod Structure & Development is a Journal of Arthropod Structural Biology, Development, and Functional Morphology; it considers manuscripts that deal with micro- and neuroanatomy, development, biomechanics, organogenesis in particular under comparative and evolutionary aspects but not merely taxonomic papers. The aim of the journal is to publish papers in the areas of functional and comparative anatomy and development, with an emphasis on the role of cellular organization in organ function. The journal will also publish papers on organogenisis, embryonic and postembryonic development, and organ or tissue regeneration and repair. Manuscripts dealing with comparative and evolutionary aspects of microanatomy and development are encouraged.
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