Extra-pair paternity in the long-tailed finch Poephila acuticauda

PeerJ

article

Erica P. van Rooij¹  Lee A. Rollins¹  Clare E. Holleley¹  Simon C. Griffith¹ 

[1] Department of Biological Sciences, Macquarie University;Centre for Integrative Ecology, Deakin University;Institute for Applied Ecology, University of Canberra

关键词: Extra-pair paternity;    Sexual selection;    Polyandry;    Infidelity;    Social monogamy;    Estrildid;   

DOI  :  10.7717/peerj.1550

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

Although the majority of passerine birds are socially monogamous, true genetic monogamy is rare, with extra-pair paternity (EPP) occurring in almost 90% of surveyed socially monogamous species. We present the first molecular data on the genetic breeding system of the long-tailed finch, Poephila acuticauda, a grass finch endemic to the tropical northern savannah of Australia. Although the species forms socially monogamous pair bonds during the breeding season, we found that extra-pair males sired 12.8% of 391 offspring, in 25.7% of 101 broods. Our findings provide only the second estimate of extra-pair paternity in the estrildid finch family.

【 授权许可】

CC BY