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001-es BibID:	BIBFORM070941
Első szerző:	Tóth Zoltán
Cím:	Kinship and aggression: do house sparrows spare their relatives? / Tóth Zoltán, Bókony Veronika, Lendvai Ádám Z., Szabó Krisztián, Pénzes Zsolt, Liker András
Dátum:	2009
ISSN:	0340-5443 1432-0762
Megjegyzések:	Kin-selection theory predicts that relatedness may reduce the level of aggression among competing group members, leading to indirect fitness benefits for kin-favoring individuals. To test this hypothesis, we investigated whether relatedness affects aggressive behavior during social activities in captive house sparrow (Passer domesticus) flocks. We found that sparrows did not reduce their aggression towards kin, as neither the frequency nor the intensity of fights differed between close kin and unrelated flock-mates. Fighting success was also unrelated to kinship and the presence of relatives in the flock did not influence the birds' dominance rank. These results suggest that the pay-offs of reduced aggression towards kin may be low in non-breeding flocks of sparrows, e.g. due to competition among relatives as predicted by a recent refinement of kin-selection theory. Our findings indicate that the significance of kin selection may be restricted in some social systems such as winter aggregations of birds.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban Genetic relatedness Aggression Dominance Kin discrimination House sparrow
Megjelenés:	Behavioral Ecology And Sociobiology 63 : 8 (2009), p. 1189-1196. -
További szerzők:	Bókony Veronika (alkalmazott zoológus) Lendvai Ádám Zoltán (1977-) (biológus) Szabó Krisztián (1975-) (zoológus) Pénzes Zsolt Liker András
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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