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タイトル: 保護卵の存在がクモハゼ雄の配偶成功に与える効果
その他のタイトル: Effect of the presence of eggs in the nests on additional mating of the dusky frillgoby Bathygobius fuscus males
著者: 永瀬, 翔一 / 竹垣, 毅
著者(別表記) : Nagase, Shoichi / 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.1-4; 2017
抄録: Effect of the presence of eggs in the spawning nests on additional mating of the dusky frillgoby Bathygobius fuscus males was investigated in the field. Males tending eggs acquired new eggs significantly earlier than males without eggs. Even in the comparison within the same individual, males could acquire new eggs earlier when already having eggs than when having no eggs. These results suggest that females prefer to mate with males with eggs than those without eggs in the nests, as known in some fishes. Females may benefit from the mating with males with eggs in terms of survival of their own eggs through the dilution effect and avoidance of egg desertion by males. Actually, the males disappeared from the nests before hatching had significantly fewer eggs than those succeeded in egg care until hatching.
キーワード: ハゼ科 / 配偶者選好性 / 親による子の保護 / 複婚 / 繁殖行動 / Gobiidae / mate preference / parental care / polygamy / reproductive behavior
URI: http://hdl.handle.net/10069/37102
ISSN: 05471427
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher

引用URI : http://hdl.handle.net/10069/37102



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