黄山短尾猴交配叫声及其影响因素

Copulation calls and its influencing factors of Tibetan macaques (Macaca thibetana) at Huangshan,China

哺乳动物在交配过程中经常会发出独特且有节奏的交配叫声(Copulation call),这通常被认为是雌雄双方交配策略的一种体现。交配叫声的发生及其影响因素在不同物种间差异较大,对其深入研究有助于比较和揭示不同动物交配策略的差异及其适应性功能。为了阐明交配叫声的生物学和社会学因素,我们在安徽黄山记录了野生黄山短尾猴(Macaca thibetana)交配行为中雄性和雌性发出叫声的过程,分析了影响交配叫声的相关因素,探讨了伴随叫声的交配行为对后续友好行为的影响。结果表明,在交配过程中,高顺位成年雄性短尾猴比其他性别—顺位组个体更易发出叫声,而优势个体雌性和从属个体雌性在交配过程中的发声频次无显著差异。此外,交配叫声能促进参与者之间在交配后表现出更多的友好行为和更近的空间距离。本研究为理解多雄多雌婚配制度的短尾猴群体交配策略提供了声音通讯方面的理论支持。

Copulation call has been defined as an unique and rhythmic vocalization which can be performed by males and/or females during their copulations in mammals.Copulation calls are taken as a mating strategy of males and females.The studies of copulation calls will help us to reveal the differences of mating strategies among varieties of species.In this study,we recorded the frequency of copulation calls between mating males and females when copulatory behavior occurred in Tibetan macaques(Macaca thibetana).We further analyzed the related elements along with copulation calls and whether copulatory behaviors had an impact on the following friendly behavior between mating males and mating females.The results showed that the adult higher-ranking males performed more copulation calls than other classes.There is no difference on copulation calls between dominated females and subordinated females.Moreover,copulation calls contributed to more friendly behavior and closer spatial distance between males and famales after mating.This study provided a fundamental datum about communication process for copulation calls in Tibetan macaques,and it helped to understand the theoretical significance of function and evolution in muti-males and muti-females society.