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001-es BibID:	BIBFORM070938
Első szerző:	Liker András
Cím:	Genetic relatedness in wintering groups of house sparrows (Passer domesticus) / Liker András, Bókony Veronika, Kulcsár Anna, Tóth Zoltán, Szabó Krisztián, Kaholek Balázs, Pénzes Zsolt
Dátum:	2009
ISSN:	0962-1083
Megjegyzések:	Social behaviour of group-living animals is often influenced by the relatedness ofindividuals, thus understanding the genetic structure of groups is important for theinterpretation of costs and benefits of social interactions. In this study, we investigatedgenetic relatedness in feeding aggregations of free-living house sparrows (Passerdomesticus) during the nonbreeding season. This species is a frequent model system forstudies of social behaviour (e.g. aggression, social foraging), but we lack adequateinformation on the kin structure of sparrow flocks. During two winters, we ringed andobserved sparrows at feeding stations, and used resightings to identify stable flock-members and to calculate association indices between birds. We genotyped the birdsusing seven highly polymorphic microsatellite loci, and estimated pairwise relatednesscoefficients and relatedness categories (close kin vs. unrelated) by maximum likelihoodmethod. We found that most birds were unrelated to each other in the flocks (mean ? SErelatedness coefficient: 0.06 ? 0.002), although most individuals had at least a few closerelatives in their home flock (14.3 ? 0.6% of flock-mates). Pairwise association betweenindividuals was not significantly related to their genetic relatedness. Furthermore, therewas no difference between within-flock vs. between-flock relatedness, and birds hadsimilar proportions of close kin within and outside their home flock. Finally, relatednessamong members of different flocks was unrelated to the distance between their flocks.Thus, sparrow flocks were not characterized by association of relatives, nevertheless thepresence of some close kin may provide opportunity for kin-biased behaviours to evolve.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban association, dispersal feeding groups house sparrow, kinship
Megjelenés:	Molecular Ecology 18 : 22 (2009), p. 4696-4706. -
További szerzők:	Bókony Veronika (alkalmazott zoológus) Kulcsár Anna Tóth Zoltán Szabó Krisztián (1975-) (zoológus) Kaholek Balázs Pénzes Zsolt
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