Journal
JOURNAL OF AVIAN BIOLOGY
Volume 31, Issue 4, Pages 580-583Publisher
WILEY
DOI: 10.1034/j.1600-048X.2000.1310418.x
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We analysed genetic relatedness through DNA-fingerprinting in 38 two-chick families of Chinstrap Penguins Pygoscelis antarctica in the Vapour Col colony on Deception Island, Antarctica. Band-sharing coefficients between males and chicks in their nests, females and chicks in their nests and brood mates were very close to 0.50 and were not significantly different. Presumably unrelated pair mates showed much lower band-sharing coefficients (0.12), which differed significantly from those between putative parents and their chicks and between presumed siblings. No case of extra-pair paternity was detected according to the presence of novel bands or to band-sharing coefficients. Monogamy in the study population is not only social but also genetic.
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