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Evidence for True Fall-mating in Japanese Newt Cynops pyrrhogaster

https://hiroshima.repo.nii.ac.jp/records/2009037
https://hiroshima.repo.nii.ac.jp/records/2009037
76fadbbc-f8ad-434e-8532-9ec88b299863
名前 / ファイル ライセンス アクション
ZooSci_28_758.pdf ZooSci_28_758.pdf (710.3 KB)
Item type デフォルトアイテムタイプ_(フル)(1)
公開日 2023-03-18
タイトル
タイトル Evidence for True Fall-mating in Japanese Newt Cynops pyrrhogaster
言語 en
作成者 Akiyama, Shigeharu

× Akiyama, Shigeharu

en Akiyama, Shigeharu

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Iwao, Yasuhiro

× Iwao, Yasuhiro

en Iwao, Yasuhiro

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Miura, Ikuo

× Miura, Ikuo

en Miura, Ikuo

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利情報
権利情報 (c) 2011 Zoological Society of Japan
主題
主題Scheme Other
主題 fall mating
主題
主題Scheme Other
主題 newt
主題
主題Scheme Other
主題 spermathecae
主題
主題Scheme Other
主題 sperm
主題
主題Scheme Other
主題 maturation
主題
主題Scheme NDC
主題 460
内容記述
内容記述 The mating season of Japanese newt Cynops pyrrhogaster is generally thought to occur once a year in spring to early summer, during the months of April to June, as in many other Japanese amphibians. However, in fall, from September to October, we often observed breeding colored males demonstrating a mating behavior with females in the field. In this study, in order to identify their true mating season, we anatomically and histologically investigated the annual maturation cycle of gonads and reproductive organs, including cloacal spermathecae in females, and, using a molecular marker, identified the seasonal origins of sperm, which are released in spring to perform insemination. We found that, in fall, ovaries are somewhat immature, while the testes were mature and the sperm already stored in the deferent ducts. Females stored a significant amount of sperm in around 80% of the spermatechae examined in October and 100% in December. When artificially ovulated in March before contact with male partners after hibernation, the females spawned fertilized eggs and these developed normally. Finally, we identified heterozygous genotypes of the visual pigment gene for the two different population types in the embryos, which were derived from a female who established contact with males of the same population in fall and then switched to males from another population until oviposition in spring. We therefore, conclude that the true mating season of this species occurs from fall to early summer, interrupted only by winter, and lasts six months longer (from October to June) than generally believed.
言語 en
出版者
出版者 日本動物学会
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
識別子タイプ DOI
関連識別子 10.2108/zsj.28.758
関連情報
識別子タイプ DOI
関連識別子 http://dx.doi.org/10.2108/zsj.28.758
関連情報
識別子タイプ URI
関連識別子 http://www.bioone.org/doi/full/10.2108/zsj.28.758
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0289-0003
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AA10545874
開始ページ
開始ページ 758
書誌情報 Zoological Science
Zoological Science

巻 28, 号 10, p. 758-763, 発行日 2011
旧ID 34761
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