布氏田鼠社群亲缘关系的研究

Study on the Affinity Relation in Colonies of Brandt's Vole

采用野外标志流放法和实验室观察研究了洞群内布氏田鼠群体亲缘关系及其对鼠群的作用。保持一定的亲缘关系对鼠群结构稳定起着重要作用。其中以亲体和同代的比例为高。观察表明陌生鼠间组合有3种反应形式，（1）接受，（2）容忍，（3）拒绝。繁殖期♂＋♀、♀＋♀均为接受，♂＋♂为容忍。非繁殖期♂＋♀为容忍，♀＋♀、♂＋♂均为拒绝。采用不同集群方式结果在20天内与母鼠共同集群有利于幼鼠发育，而此后进入陌生群有可能加快其发育。

The affinity relation in colonies of Brandt's vole was studied on remarking in grasslandand observed in laboratory. The results show that it is important for steady structure of colonies to keepsome affinity relation. It is more proportion for the relation with two tws. One type is mother with its chil-dren, other is same generation. In laboratory there are 3 responses when a vole meets a strange one. Theone is acceptation, an other is tolermce, third is refusal. The acceptation appeare when ♂ meets ♀ or ♀meets ♀ at reproduction period, but it was toleraed when ♂ meets ♂. And it is refusal when ♀ meets♀ or ♂ meets ♂, but it is tolerated when ♂ meets + at non - production period. The result show that isbeneficial for growth with their mother's colony in the first 20 days when the weight grows about 10g. Andthen they grow better in strange colony.