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タイトル: クモハゼのネストホルダー雄による産卵前精子塗り付け行動
その他のタイトル: Prespawning sperm release behavior by the nest-holding males of dusky frillgoby Bathygobius fuscus
著者: 中西, 絢子 / 金谷, 洋佑 / 竹垣, 毅
著者(別表記) : Nakanishi, Ayako / Kanatani, Yosuke / Takegaki, Takeshi
発行日: 2017年 3月
出版者: 長崎大学水産学部 / The Faculty of Fisheries, Nagasaki University
引用: 長崎大学水産学部研究報告, 98, pp.5-9; 2017
抄録: Prespawning sperm release on the nest substrate by the nest-holding males of the dusky frillgoby Bathygobius fuscus was investigated in the tank. The nest-holding males repeatedly rubbed their genital papillae on the inner surface of the nests from before female egg-laying through the end of the spawning. Moreover, many sperm were confirmed in the sea water sampled from inside of the nests before spawning. These results indicate that nest-holding males of this species lay sperm with the secretion of the sperm duct glands on the nest substrate even before spawning, as known in some other gobies. The unique fertilization process of this species may be adaptive for the nest-holding males as a counter-tactic against males with sneak fertilization tactic.
キーワード: 代替繁殖戦術 / 受精様式 / ハゼ科 / 精子競争 / スニーキング / 精巣付属器官 / alternative reproductive tactics / fertilization mode / Gobiidae, / sperm competition / sneaking / sperm duct gland
URI: http://hdl.handle.net/10069/37103
ISSN: 05471427
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher

引用URI : http://hdl.handle.net/10069/37103



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