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首页> 外文期刊>American journal of primatology >Sex Differences in Vocal Patterns in the Northern Muriqui (Brachyteles hypoxanthus)
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Sex Differences in Vocal Patterns in the Northern Muriqui (Brachyteles hypoxanthus)

机译：北部穆里基（Brachyteles hypoxanthus）声纹的性别差异。

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摘要

We investigated whether sex differences in spatial dynamics correlate with rates of staccato and neigh vocalizations in northern muriquis (Brachyteles hypoxanthus) at the Reserva Particular do Patrimonio Natural-Feliciano Miguel Abdala, Minas Gerais, Brazil. A total of 2,727 10 min focal subject samples were collected on 32 adult females and 31 adult males between April 2007 and March 2008. Compared with males, females spent a significantly lower proportion of their time in proximity to other group members and gave staccatos at significantly higher rates while feeding, resting, and traveling. Conversely, males emitted neigh vocalizations at significantly higher rates than females when feeding and resting only. Both sexes gave significantly more staccatos when feeding than when they were engaged in other activities, but their respective rates of neighs did not vary across activities. Both females and males emitted staccato vocalizations at significantly higher rates during times of the year when preferred foods were scarce, but no seasonal differences in the rates of neigh vocalizations were observed in either sex. Females and males showed a reduction in the number of neighbors following staccato vocalizations and an increase in the number of neighbors following neigh vocalizations. Our findings of sex differences in the rates of staccato and neigh vocalizations and the effects of these vocalizations on interindividual spacing are consistent with sex differences in spatial dynamics, and confirm the role of vocal communication in mediating spatial associations in this species.
机译：我们调查了在巴西米纳斯吉拉斯州自然保护区特定自然保护区北部库里鱼（Brachyteles hypoxanthus）的断音和邻近发声的速率是否与性别差异相关。在2007年4月至2008年3月之间，共收集了2727份10分钟的重点受试者样本，收集了32名成年女性和31名成年男性。与男性相比，女性在与其他小组成员相处时花费的时间比例显着降低，并且断断续续的时间显着增加。进食，休息和旅行时的费用较高。相反，仅在进食和休息时，雄性发出的嘶哑声明显高于雌性。进食时，两性断断续续明显高于他们从事其他活动时的断断续续，但他们各自的邻居比率在各活动之间没有变化。一年中，当偏爱食物稀少的时候，男性和女性发出断断续续发声的频率要高得多，但是在男女中都没有观察到邻居发声的季节差异。断断续续发声后，女性和男性的邻居数量减少，而发嘶声后，邻居的数量增加。我们对断断续续和邻近发声率的性别差异以及这些发声对个体间距的影响的发现与空间动力学中的性别差异是一致的，并证实了发声沟通在介导该物种空间关联中的作用。

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