資料載入中.....
|
請使用永久網址來引用或連結此文件:
https://irlib.pccu.edu.tw/handle/987654321/26810
|
| 題名: | 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) |
| 貢獻者: | Dept Life Sci |
| 關鍵詞: | 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 |
| 上傳時間: | 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 |
| 顯示於類別: | [生命科學系] 期刊論文
|
文件中的檔案:
| 檔案 |
描述 |
大小 | 格式 | 瀏覽次數 |
|---|
| index.html | | 0Kb | HTML | 349 | 檢視/開啟 |
|
在CCUR中所有的資料項目都受到原著作權保護.
|
