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Relatedness, Life History, and Social Behavior in the Long-Lived Bechstein's Bat, Myotis bechsteinii

机译:龙寿业蝙蝠蝙蝠,Myotis Bechsteinii的相关性,生活史和社会行为

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Since 1993, I have studied the social behavior and genetic population structure of the communally breeding Bechstein's bat, Myotis bechsteinii, to analyze the adaptive value of female sociality. Maternity colonies of M. bechsteinii normally consist of 15-45 females and their young; males are solitary. Individual females do not give birth every year, weaning on average c. 0.7 young per year. Thus, colonies are comprised of reproductive and nonreproductive bats. Low annual individual reproductive success is balanced by a high survival rate of about 80% per year for adult females. Genetic population analysis, using mitochondrial and nuclear markers, revealed strict female philopatry and male dispersal. Maternity colonies are closed societies, comprised of closely related and genetically unrelated females that probably live together for their entire lives. Within colonies, females display a fission-fusion society. Colonies regularly split into several subgroups that occupy different roosts. Individuals switch roosts frequently and subgroup composition is characterized by strong mixing of colony members. The social organization of maternity colonies suggests that the long-lived females have familiar, cooperative partners, some of which are close relatives, for raising their young. Colony members probably profit from sociality via warming by nonreproductive females, babysitting, and information transfer about roosts, whereas allonursing and information transfer about food are of little or no importance.
机译:自1993年以来,我研究了社会行为和社会行为和遗传人口结构的共同养殖的Bechstein的蝙蝠,Myotis Bechsteinii,分析了女性社会性的自适应价值。 M. Bechsteinii的产妇殖民地通常由15-45名女性和他们的年轻人组成;雄性是孤独的。每个女性每年都不会生育,平均断奶。每年0.7年轻人。因此,菌落组成生殖和非产品蝙蝠。年度个体生殖成功的年度较低的成年女性每年高约80%的均衡率平衡。遗传人口分析,使用线粒体和核标记,揭示了严格的女性哲学和雄性分散。产妇殖民地是封闭的社会,由密切相关的和基因上的不相关的女性,这可能与他们的整个生命一起生活。在殖民地内,女性显示裂变融合社会。殖民地定期分为几个占据不同栖息的子组。个体切换栖息地经常和亚组组合物的特征在于菌落成员的强烈混合。产妇殖民地的社会组织表明,长期的女性熟悉,合作伙伴,其中一些是近亲,抚养他们的年轻人。殖民地成员可能通过非营模女性,保姆和关于栖息的信息转移来获利,而有关食物的疫苗和信息转移几乎或根本不重要。

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