Unravelling the dispersal patterns and the social drivers of natal emigration of a cooperative breeding mammal, the golden lion tamarin
Unravelling the dispersal patterns and the social drivers of natal emigration of a cooperative breeding mammal, the golden lion tamarin
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揭示合作繁殖哺乳动物金狮狨猴的扩散模式和出生迁徙的社会驱动因素
DOI：
10.1002/ajp.22959
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发表时间：
2019
影响因子：
2.4
通讯作者：
Ruiz-Miranda C
中科院分区：
文献类型：
--
作者：
Romano V;Martins A;Ruiz-Miranda C
研究动物扩散的社会驱动因素是理解社会系统进化的关键。在纳塔尔移民的社会驱动因素中，同种吸引力，侵略性驱逐和减少社会融合假设预测，性成熟的个体谁接受更多的攻击性行为和参与较少的亲和互动更容易分散。很少有报道探讨这些直接因素影响移民合作繁殖的物种，特别是新热带灵长类动物。在这项研究中，我们调查的扩散模式和测试的社会驱动力纳塔尔移民的金狮绢毛猴（Leontopithecus罗萨利亚）-濒危物种栖息在巴西的大西洋雨林片段。我们使用的行为和人口统计学数据收集在7年内从68组的绢毛猴栖息在20个森林片段。我们的分析表明，从160个分散的个人，分散的成功率较高的男性和那些从事平行分散，但男性和女性使用不同的策略，以提高他们的分散成功，男性移民到既定的群体，而女性形成新的群体。我们没有发现高水平的竞争行为组成员纳塔尔前移民。相反，我们发现，同种吸引力驱动纳塔尔在两性移民，而另外的纳塔尔组内的低水平的亲和互动触发男性移民。我们讨论纳塔尔移民在更广泛的角度来看，合作育种系统和这些研究结果对物种保护的影响。
The study of the social drivers of animal dispersal is key to understanding the evolution of social systems. Among the social drivers of natal emigration, the conspecific attraction, aggressive eviction, and reduced social integration hypotheses predict that sexually mature individuals who receive more aggressive behavior and are engaged in less affiliative interactions are more likely to disperse. Few reports have explored these proximate factors affecting emigration in cooperatively breeding species, particularly of Neotropical primates. In this study, we investigated the dispersal patterns and tested the social drivers of natal emigration in the golden lion tamarin (Leontopithecus rosalia) — an endangered species inhabiting Atlantic rainforests fragments in Brazil. We used behavioral and demographic data collected during 7 years from 68 groups of tamarins inhabiting 20 forest fragments. Our analyses from the 160 dispersing individuals showed that dispersal success is higher for males and for those engaged in parallel dispersal, but that males and females use different strategies to enhance their dispersal success, males immigrate into established groups while females form new groups. We did not find high levels of agonistic behavior among group members before natal emigration. Instead we found that conspecific attraction drives natal emigration in both sexes, while additionally the low level of affiliative interactions within the natal group triggers male emigration. We discuss natal emigration in the broader perspective of the cooperative breeding system and the implications of these findings for the conservation of the species.