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- W1577379633 abstract "Three distinct molecular genetic techniques were applied at different levels in the evolutionaryhierarchy to investigate the reproductive ecology, population biology and systematics ofspecies in the shearwater genus Puffinus, with particular emphasis on the short-tailedshearwater, P. tenuirostris, or Tasmanian muttonbird.Genetic relationships between mated pairs of adult short-tailed shearwaters and the singleoffspring in the nest were analysed by multilocus DNA fingerprinting. The human polycoreminisatellite probe, 33.6, revealed sufficient variation in shearwater DNA to allow individualspecificidentification. In addition this probe hybridised to a large minisatellite restrictionfragmentderived from the female W chromosome, which allowed the identification of sex ofadults and nestlings in this sexually monomorphic species. Analysis of DNA fingerprintprofiles from 107 nestlings and one or both of the attendant adults in each case, in twoindependent studies, revealed 13 cases where a nestling was not related to one of theattendant adults. Although four of these unrelated adults could be accounted for by samplingerrors, the remaining nine cases all involved the male in each nest and were more likely tohave resulted from extra-pair copulations involving the attendant female and an unknown,extra-pair male. These results suggest that although short-tailed shearwaters exhibit strongpair fidelity and social monogamy, some birds are engaging in an alternative mating strategythat may substantially enhance both male and female reproductive success. Future estimatesof life-time reproductive success in this species will have to allow for the small percentage ofpaired males that are unrelated to the nestlings that they are providing care for." @default.
- W1577379633 created "2016-06-24" @default.
- W1577379633 creator A5033194669 @default.
- W1577379633 date "1994-10-01" @default.
- W1577379633 modified "2023-09-26" @default.
- W1577379633 title "Ecological and evolutionary genetics of Puffinus spp." @default.
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