Abstract
The roles of kinship in agonistic behavior and mate choice were evaluated in Brandt's voles (Microtus brandti). In chambers bedded with familiar or unfamiliar substrates, the aggressive behavior and social investigation towards adult unfamiliar same-sex siblings and non-siblings were examined, and no significant kin bias was found. Males sniffed and followed unfamiliar unrelated females significantly more than unfamiliar sibling sisters, but males did not show significant preferences in copulatory behavior and agonistic behavior. Females spent significantly more time copulating with unfamiliar unrelated males than with their unfamiliar sibling brothers, while they did not show a significant preference in social investigation between them. Our study shows that kinship might play a role in the inbreeding avoidance based on preweaning familiarity or/and phenotype matching, but the role of kinship in agonistic behavior remains unclear.
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Acknowledgements
We thank Drs. Wenqin Zhong and Dehua Wang in the Institute of Zoology, Chinese Academy of Sciences, for their helpful comments on the manuscript. And we are grateful to the personnel of the Group of Animal Ecology in the Institute of Ecology, Beijing Normal University for the technical assistance and suggestion on this study. This study was partly supported by grants from the Natural Scientific Foundation of China (no. 39470117) and the Excellent Youth Teacher Fund in National Education Committee of China to J.F. and C.A.S. (Chinese Academy of Sciences) Innovation Program.
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Yu, X., Sun, R. & Fang, J. Effect of kinship on social behaviors in Brandt's voles (Microtus brandti). J Ethol 22, 17–22 (2004). https://doi.org/10.1007/s10164-003-0097-8
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DOI: https://doi.org/10.1007/s10164-003-0097-8