Acquisition of novel muscles enabled protruding and retracting mechanisms of female penis in sex-role reversed cave insects

Cheng, Zixin; Kamimura, Yoshitaka; Ferreira, Rodrigo L.; Lienhard, Charles; Yoshizawa, Kazunori

Acquisition of novel muscles enabled protruding and retracting mechanisms of female penis in sex-role reversed cave insects

Cheng, Zixin; Kamimura, Yoshitaka; Ferreira, Rodrigo L. et al.

Royal Society open science, 2023, 10(1), 220471

Permalink : https://hdl.handle.net/2115/88192

このアイテムのアクセス数:316件（2026-05-08 20:09 集計）

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ファイル	フォーマット	サイズ	閲覧回数	説明
https://doi.org/10.1098/rsos.220471			13

論文情報

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アクセス権	open access
URI	https://hdl.handle.net/2115/88192
タイトル	Acquisition of novel muscles enabled protruding and retracting mechanisms of female penis in sex-role reversed cave insects
著者	Cheng, Zixin ; Kamimura, Yoshitaka ; Ferreira, Rodrigo L. ; Lienhard, Charles ; Yoshizawa, Kazunori
著者名 Cheng, Zixin
著者名 Kamimura, Yoshitaka
著者名 Ferreira, Rodrigo L.
著者名 Lienhard, Charles
e-Rad_Researcher 10322843 著者名 Yoshizawa, Kazunori
言語	英語
キーワード	female genitalia
	gynosome
	homology
	Neotrogla
	muscle
発行日	2023
出版者	Royal Society
収録物名	Royal Society open science
巻(号)	10(1)
ページ	220471
抄録	Brazilian sex-role reversed cave insects (genus Neotrogla) have a striking structure called the gynosome (or female penis), which deeply penetrates male vagina-like genitalia during copulation to receive nutritious semen. However, the protruding and retracting mechanisms of the female penis, including their evolutionary origin, are poorly understood. By using micro-computed tomography (mu CT), we compared the genital morphology and musculature between species with a gynosome and others lacking this structure. As a result, we discovered two groups of muscles related to the protrusion and retraction of gynosomes. These muscles were also observed in species with non-protrusible prepenis. This suggests that evolution of these muscles preceded the acquisition of the protruding function of the gynosome, originally having a putative stimulatory function to receive nutritious semen. This intermediate stage probably allowed for the reversal of genital functions.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
PISSN	2054-5703
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1098/rsos.220471