Patterns of extra-pair fertilizations in bobolinks

  title={Patterns of extra-pair fertilizations in bobolinks},
  author={Eric Bollinger and Thomas A. Gavin},
  journal={Behavioral Ecology and Sociobiology},
  • E. Bollinger, T. Gavin
  • Published 1 August 1991
  • Environmental Science
  • Behavioral Ecology and Sociobiology
SummaryWe studied patterns of paternity in 840 nestling bobolinks (Dolichonyx oryzivorus) from 191 pairbonded adults and the chicks they reared in west central New York, USA, during 1983–1986, using allozyme data (4 variable loci). Thirty-six (4.3%) nestlings exhibited genotypes that excluded a putative parent as a genetic parent. Using the method of Westneat et al. (1987) we estimated that 14.6% of the nestlings were sired by extrapair copulations and that 28% of the nests contained ≥ 1… 

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