Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct

Abstract Green turtles (Chelonia mydas) are seasonal breeders with a time lag between mating and nesting periods. We therefore investigated whether female turtles store sperm like some other animals by histologically and ultrastructurally analyzing oviducts collected from three mature female free-ra...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Chiyo Kitayama, Jumpei Tomiyasu, Hiroki Bochimoto, Satomi Kondo, Kazuyuki Tokuda, Ryuta Ogawa, Saki Okubo, Daisuke Kondoh
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/192c640314c84e64bd494a14f25facd8
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:192c640314c84e64bd494a14f25facd8
record_format	dspace
spelling	oai:doaj.org-article:192c640314c84e64bd494a14f25facd82021-12-02T18:51:28ZHistological findings of sperm storage in green turtle (Chelonia mydas) oviduct10.1038/s41598-021-98917-62045-2322https://doaj.org/article/192c640314c84e64bd494a14f25facd82021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98917-6https://doaj.org/toc/2045-2322Abstract Green turtles (Chelonia mydas) are seasonal breeders with a time lag between mating and nesting periods. We therefore investigated whether female turtles store sperm like some other animals by histologically and ultrastructurally analyzing oviducts collected from three mature female free-ranging green turtles during the breeding season in the Ogasawara Islands, Japan. The oviduct comprised an infundibulum, magnum, isthmus, uterus, and vagina. Sperm was found in the isthmus of all turtles examined. Some spermatozoa were found in the duct and acini of glands in the isthmus of two turtles with oviducts containing eggs, and a few were also located in the transition area between the uterus and vagina of one of the turtles. On the other hand, we also found abundant spermatozoa on the luminal surface of the isthmus of one turtle captured during mating. In most reptiles, fertilization occurs in the infundibulum or albumen region, and thus the isthmus near those areas might be suitable for storing sperm in female turtles.Chiyo KitayamaJumpei TomiyasuHiroki BochimotoSatomi KondoKazuyuki TokudaRyuta OgawaSaki OkuboDaisuke KondohNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chiyo Kitayama Jumpei Tomiyasu Hiroki Bochimoto Satomi Kondo Kazuyuki Tokuda Ryuta Ogawa Saki Okubo Daisuke Kondoh Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct
description	Abstract Green turtles (Chelonia mydas) are seasonal breeders with a time lag between mating and nesting periods. We therefore investigated whether female turtles store sperm like some other animals by histologically and ultrastructurally analyzing oviducts collected from three mature female free-ranging green turtles during the breeding season in the Ogasawara Islands, Japan. The oviduct comprised an infundibulum, magnum, isthmus, uterus, and vagina. Sperm was found in the isthmus of all turtles examined. Some spermatozoa were found in the duct and acini of glands in the isthmus of two turtles with oviducts containing eggs, and a few were also located in the transition area between the uterus and vagina of one of the turtles. On the other hand, we also found abundant spermatozoa on the luminal surface of the isthmus of one turtle captured during mating. In most reptiles, fertilization occurs in the infundibulum or albumen region, and thus the isthmus near those areas might be suitable for storing sperm in female turtles.
format	article
author	Chiyo Kitayama Jumpei Tomiyasu Hiroki Bochimoto Satomi Kondo Kazuyuki Tokuda Ryuta Ogawa Saki Okubo Daisuke Kondoh
author_facet	Chiyo Kitayama Jumpei Tomiyasu Hiroki Bochimoto Satomi Kondo Kazuyuki Tokuda Ryuta Ogawa Saki Okubo Daisuke Kondoh
author_sort	Chiyo Kitayama
title	Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct
title_short	Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct
title_full	Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct
title_fullStr	Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct
title_full_unstemmed	Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct
title_sort	histological findings of sperm storage in green turtle (chelonia mydas) oviduct
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/192c640314c84e64bd494a14f25facd8
work_keys_str_mv	AT chiyokitayama histologicalfindingsofspermstorageingreenturtlecheloniamydasoviduct AT jumpeitomiyasu histologicalfindingsofspermstorageingreenturtlecheloniamydasoviduct AT hirokibochimoto histologicalfindingsofspermstorageingreenturtlecheloniamydasoviduct AT satomikondo histologicalfindingsofspermstorageingreenturtlecheloniamydasoviduct AT kazuyukitokuda histologicalfindingsofspermstorageingreenturtlecheloniamydasoviduct AT ryutaogawa histologicalfindingsofspermstorageingreenturtlecheloniamydasoviduct AT sakiokubo histologicalfindingsofspermstorageingreenturtlecheloniamydasoviduct AT daisukekondoh histologicalfindingsofspermstorageingreenturtlecheloniamydasoviduct
_version_	1718377372660531200

Histological findings of sperm storage in green turtle (Chelonia mydas) oviduct

Ejemplares similares