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题名: Reproductive behavior of the male rose bitterling Rhodeus ocellatus as influenced by the operational sex ratio
作者: Liao, Cai-Ping1, 2; Yu, Dan1; Chen, Yi-Yu1; Liu, Huan-Zhang1
通讯作者: Liu, HZ (reprint author), Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China.
关键词: Game theory ; Alternative behaviors ; Male mating behavior ; Rose bitterling
刊名: ZOOLOGICAL STUDIES
发表日期: 2013-09-01
DOI: 10.1186/1810-522X-52-21
卷: 52
收录类别: SCI
文章类型: Article
部门归属: [Liao, Cai-Ping ; Yu, Dan ; Chen, Yi-Yu ; Liu, Huan-Zhang] Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China ; [Liao, Cai-Ping] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [30970443]
类目[WOS]: Zoology
研究领域[WOS]: Zoology
摘要: Background:Game theory predicts that as the operational sex ratio (OSR; the ratio of sexually active males to fertilizable females) increases, reproductive males may adopt alternative reproductive behaviors. Empirical studies indicated that alternative behaviors may differ for different species. In the present study, we investigated the influence of different male-biased OSRs on male reproductive behaviors shown by a freshwater fish, the rose bitterling Rhodeus ocellatus. Results:Six levels of the OSR (1:1, 2:1, 3:1, 5:1, 7:1, and 9:1) were established, and male leading, aggression, and preoviposition ejaculation behaviors were recorded. Our experiments showed that at low OSRs, the leading behavior of male rose bitterling increased with an increasing OSR, reaching a maximum at an OSR of 3:1, and then decreased as the OSR further increased. In contrast, aggression and preoviposition ejaculation behavior continually increased with an increasing OSR. Notably, males possibly lost their territorial position to other males and became sneakers when facing more rivals. Conclusions:These observations suggest that at lower OSRs, male rose bitterling mainly rely on leading behavior, while at higher OSRs, they increasingly adopt aggression and preoviposition ejaculation. Therefore, for the rose bitterling, (1) decreased leading behavior and (2) increased aggression and preoviposition ejaculation are two alternative responses in the face of an increasing OSR, which is a more straightforward strategy for facing an increased risk of sperm competition than that adopted by its congener, the European bitterling.
英文摘要: Background:Game theory predicts that as the operational sex ratio (OSR; the ratio of sexually active males to fertilizable females) increases, reproductive males may adopt alternative reproductive behaviors. Empirical studies indicated that alternative behaviors may differ for different species. In the present study, we investigated the influence of different male-biased OSRs on male reproductive behaviors shown by a freshwater fish, the rose bitterling Rhodeus ocellatus.
关键词[WOS]: SPERM COMPETITION ; POPULATION-DENSITY ; MATING-BEHAVIOR ; MATE CHOICE ; SERICEUS ; SUCCESS ; FISH ; SELECTION ; AMARUS ; TERRITORIALITY
语种: 英语
WOS记录号: WOS:000326870000014
ISSN号: 1021-5506
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19760
Appears in Collections:水生生物多样性与资源保护研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

Recommended Citation:
Liao, Cai-Ping; Yu, Dan; Chen, Yi-Yu; Liu, Huan-Zhang.Reproductive behavior of the male rose bitterling Rhodeus ocellatus as influenced by the operational sex ratio,ZOOLOGICAL STUDIES,2013,52():
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