The body weight of wild Tibetan macaques(Macaca thibetana)and its in-fluencing factors
Body weight is an important indicator of primate life history and growth and development characteristics,which can suggest information about the physiological condition,behavioral changes,and ecological adaptations of ani-mals.In this study,we monitored the body weights of 48 Tibetan macaques(Macaca thibetana)from the YA1 group in the Wild Monkey Valley of Huangshan Mountain,Anhui Province,for 11 consecutive months(July 2022 to May 2023)using floor scales.The mean body weight of male Tibetan macaques(18.71±2.33)kg was significantly higher than that of females(11.79±1.97)kg,and the rapid development of body weight occurred between 3 and 5 years old in males and between 2 and 3 years old in females.There was a significant positive correlation between body weight and individual social rank in both adult males and females(P＜0.001).There was significant seasonal variation(P＜0.05)in body weights of adult Tibetan macaques,with both males and females having their highest body weights in autumn,but males having their lowest body weights in winter and females having their lowest body weights in spring.The body weights of non-pregnant individuals did not differ significantly between seasons,whereas the body weights of pregnant individuals decreased significantly(P＜0.05)from winter to spring.The present study showed that there was a signifi-cant male-female dimorphism in body weight,a significant differentiation in the rapid developmental period of immature body weight,and a significant effect of both season and social rank on body weight in Tibetan macaques.
万方数据
维普
