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Testis size variation within sneaker males of the dusky frillgoby Bathygobius fuscus (Gobiidae): effects of within-tactic competition
http://hdl.handle.net/10069/37868
http://hdl.handle.net/10069/37868574679d2-dbb5-42ab-ade1-77ae095d3561
名前 / ファイル | ライセンス | アクション |
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BJLS122_394.pdf (234.6 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-07-06 | |||||
タイトル | ||||||
タイトル | Testis size variation within sneaker males of the dusky frillgoby Bathygobius fuscus (Gobiidae): effects of within-tactic competition | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | alternative reproductive tactics | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | goby | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | sneaking | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | sperm competition | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | testis | |||||
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 | |||||
著者 |
Kawase, Shoma
× Kawase, Shoma× Hayashi, Takahiro× Matsumoto, Yukio× Takegaki, Takeshi |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A ‘sneaking tactic’ is an alternative reproductive strategy that usually results in sperm competition among males with different tactics. Relatively large testes are a sneaker-specific trait that has generally been thought to have evolved due to sperm competition between sneaker males and bourgeois (guarding) males. However, here we show that competition among sneaker males can also affect testis enlargement in the dusky frillgoby (Bathygobius fuscus) sneaker males. The competitive advantage of focal sneaker males was experimentally manipulated by placing them in tanks with either relatively smaller or larger males. Testis enlargement was conspicuous in focal males that were cohoused with larger males. Smaller sneaker males may invest more in testicular growth because they are at a competitive disadvantage in physical contests for sneaking opportunities among sneaker males and consequently may be confined to making relatively late intrusions during spawning into nests that have a higher risk of sperm competition. Another possible reason for the relative size-dependent energy investment in testes may be increased investment by large sneaker males in aggressive interactions for sneaking opportunities. This is the first evidence that testis size variation among sneaker males is affected by the competition among sneaker males. | |||||
書誌情報 |
Biological Journal of the Linnean Society 巻 122, 号 2, p. 394-399, 発行日 2017-10 |
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出版者 | ||||||
出版者 | Oxford University Press | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00244066 | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 10958312 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1093/biolinnean/blx075 | |||||
権利 | ||||||
権利情報 | c 2017 The Linnean Society of London, Biological Journal of the Linnean Society | |||||
権利 | ||||||
権利情報 | This is a pre-copyedited, author-produced version of an article accepted for publication in Biological Journal of the Linnean Society following peer review. The version of record, Biological Journal of the Linnean Society, 122(2), pp.394-399; 2017 is available online at: http://dx.doi.org/10.1093/biolinnean/blx075. | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Biological Journal of the Linnean Society, 122(2), pp.394-399; 2017 |