文化大學機構典藏 CCUR:Item 987654321/26810
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    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://irlib.pccu.edu.tw/handle/987654321/26810


    题名: Sequential Polygyny During Egg Attendance is Rare in a Tree Frog and Does not Increase Male Fitness
    作者: Cheng, WC (Cheng, Wei-Chun)
    Chen, YH (Chen, Yi-Huey)
    Yu, HT (Yu, Hon-Tsen)
    Roberts, JD (Roberts, J.Dale)
    Kam, YC (Kam, Yeong-Choy)
    贡献者: Dept Life Sci
    关键词: CHIRIXALUS-EIFFINGERI ANURA
    MALE PARENTAL CARE
    MALE REPRODUCTIVE SUCCESS
    EXTRA-PAIR PATERNITY
    MATERNAL BROOD CARE
    SEXUAL SELECTION
    OOPHAGOUS TADPOLES
    OVIPOSITION-SITE SELECTION
    NEOTROPICAL FROG
    FANNING ACTIVITY
    日期: 2013-04
    上传时间: 2014-02-26 16:51:38 (UTC+8)
    摘要: Sequential polygyny is a reproductive strategy that allows males to continue to mate and compensates for the loss of future breeding opportunities incurred by parental care (i.e. egg attendance). Using the frog Kurixalus eiffengeri, we tested predictions that (1) attending males fathered two, overlapping clutches; and (2) that double clutching leads to improved offspring numbers. Using five microsatellite DNA markers, we genotyped 15 pairs of overlapping clutches, which differed slightly in developmental stage at a single egg-laying site. Parentage analyses showed at least 12 of 15 pairs of overlapping egg clutches were sired by the attending male mated with different females, providing the first genetic evidence to support an earlier prediction that attending males sired both egg clutches. Field surveys found a low incidence of overlapping clutches (4.9% of 263 egg-occupied stumps), suggesting sequential polygyny is uncommon. Stumps with multiple clutches contained significantly more eggs than stumps with single clutches but hatched similar number of tadpoles. Results suggest that continuous calling that attracts females during egg attendance is a reproductive tactic that maximizes mating opportunities. However, adoption of the sequential polygyny tactic may only result in marginal fitness gains for males that are traded off against average higher egg mortality in larger egg clutches.
    關聯: ETHOLOGY Volume: 119 Issue: 4 Pages: 286-295
    显示于类别:[生命科學系] 期刊論文

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