High frequency of extrapair fertilization in a plural breeding bird, the Mexican jay, revealed by DNA microsatellites

Shou Hsien Li, Jerram L. Brown*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

28 引文 斯高帕斯(Scopus)

摘要

We used tetra-nucleotide microsatellite DNA typing to estimate the frequency of extrapair fertilization (EPF) in a plural breeding species, the Mexican jay, Aphelocoma ultramarina, in Arizona. We found EPF in 32 of 51 complete broods (63%) and 55 of 139 nestlings (40%) for which the putative father had been identified (one of the highest rates of EPF known for birds). At least 96.1% of EPF fathers came from within the group. This is by far the highest known within-group EPF rate among socially monogamous, communally rearing species. Most (70%) males of breeding age (3+ years) had no genetic paternity in a given year. Social fathers (i.e. those with nests and mated females) rarely obtained EPFs; of 25 social fathers, 23 had young in only one nest and only two had young in two nests by virtue of EPF. Of the 27 males known to be EPF fathers without a nest of their own, none had young in more than one nest. Only 7% of EPF fathers had their own broods reaching banding age (day 14), compared with 29.7% of social fathers. The proportion of EPF young was significantly larger in smaller broods. Breeding females in all age classes were equally likely to have EPF young.

原文英語
頁(從 - 到)867-877
頁數11
期刊Animal Behaviour
60
發行號6
DOIs
出版狀態已發佈 - 2000
對外發佈

ASJC Scopus subject areas

  • 生態學、進化論、行為學與系統學
  • 動物科學與動物學

指紋

深入研究「High frequency of extrapair fertilization in a plural breeding bird, the Mexican jay, revealed by DNA microsatellites」主題。共同形成了獨特的指紋。

引用此