Higher Reproductive Success among Kin Groups of Bank Voles (Clethrionomys Glareolus)

摘要: According to the kin selection theory degree of genetic relatedness affects nature intraspecific competition and it might promote cooperative and/or altruistic behavior between individuals. We examined kinship effects on reproductive success territorial females survival juveniles in bank vole Clethrionornys glnreolus. Four experimental populations were founded large enclosures (0.5 ha): two consisted five related (Related, R) mutually unrelated (Unrelated, UR). Each population had males heterogeneous origin. Our earlier results showed that R grew twice as fast UR. Here we show recruitment offspring is connected spacing mothers. Unrelated who their home ranges close each other produced significantly fewer recruits than ones. Their overlapped less smaller if they situated other. Furthermore, declined with dispersal distance from natal territory Trappabilities also lower among young whose females, indicating avoidance mature females. indicate for space more intense neigh- bors, decreasing success. Infanticide towards nestlings one possible mechanism causing a young. On contrary, sharing neighbors did not seem cause notable costs reproduction. Mature allowed use territory, but still, acquire an area own reproduction, probably due mother-daughter conflict. The basic social structure Clethrionor?zys populations, i.e., exclusive female territoriality, remained same regardless high relatedness.