Extrapair paternity in the red bishop (Euplectes orix): is there evidence for the good-genes hypothesis?
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Abstract
We investigated the pattern and frequency of extrapair paternity in a colony of the red bishop, a sexually dimorphic and highly polygynous passerine. In particular, we tested whether there was evidence in support of the good-genes hypothesis, stating that females seek extrapair copulations with high-quality males to enhance the genetic quality of their offspring. Paternity analysis of 432 nestlings from 187 broods using non-radioactive multilocus DNA-fingerprinting revealed that 17.6% of nestlings were extrapair young (EPY) and 30.5% of all broods investigated contained at least one EPY. In a pairwise comparison, extrapair fathers were found to have significantly longer tarsi than the within-pair fathers they cuckolded. Furthermore, extrapair fathers were more often territory owners in the previous season,
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| å ¨é¨æé´ | è¿å»ä¸å¹´ | è¿å»30天 | |
|---|---|---|---|
| æè¦æµè§æ¬¡æ° | 493 | 81 | 6 |
| å ¨ææµè§æ¬¡æ° | 204 | 3 | 0 |
| PDFä¸è½½æ¬¡æ° | 88 | 6 | 0 |
Extrapair paternity in the red bishop (Euplectes orix): is there evidence for the good-genes hypothesis?
äºBehaviourSearch for other papers by Thomas W.P. Friedl in
Current site
Google Scholar
PubMed
Search for other papers by Georg Klump in
Current site
Google Scholar
PubMed
Abstract
We investigated the pattern and frequency of extrapair paternity in a colony of the red bishop, a sexually dimorphic and highly polygynous passerine. In particular, we tested whether there was evidence in support of the good-genes hypothesis, stating that females seek extrapair copulations with high-quality males to enhance the genetic quality of their offspring. Paternity analysis of 432 nestlings from 187 broods using non-radioactive multilocus DNA-fingerprinting revealed that 17.6% of nestlings were extrapair young (EPY) and 30.5% of all broods investigated contained at least one EPY. In a pairwise comparison, extrapair fathers were found to have significantly longer tarsi than the within-pair fathers they cuckolded. Furthermore, extrapair fathers were more often territory owners in the previous season,
| å ¨é¨æé´ | è¿å»ä¸å¹´ | è¿å»30天 | |
|---|---|---|---|
| æè¦æµè§æ¬¡æ° | 493 | 81 | 6 |
| å ¨ææµè§æ¬¡æ° | 204 | 3 | 0 |
| PDFä¸è½½æ¬¡æ° | 88 | 6 | 0 |
