Reproductive Seasonality of Myanmar Long-tailed Macaque (Macaca fascicularis aurea)


  • AYE MI SAN Department of Zoology, Yangon University, University Avenue Road, Kamayut, Yangon, Union of Myanmar.
  • YUZURU HAMADA Evolutionary Morphology Section, Primate Research Institute, Kyoto University, 41-2 Kanrin, Inuyama, Aichi, 484-8506, Japan.


Macaca fascicularis aurea, Myanmar, food availability, reproductive seasonality


The Myanmar long-tailed macaques (Macaca fascicularis aurea) are distributed to coastal regions in Myanmar, ranging from 10˚ to 21˚N. Reproductive pattern was studied on a troop of long-tailed macaque inhabiting the steep limestone-rock Bayin Nyi Naung Mountain (16˚ 58.2' N), in Southern part of Myanmar, where the climate is seasonal. Bayin Nyi Naung Mountain troop shows the reproductive seasonality which appears to be related with the seasonal food availability. Birth season occurs from March to July that coincides with the food abundance season and mating occurs during November to February that during the lean season. There are positive correlations between rainfall and fruit availability, mean temperature and frequency of birth, fruit availability and lactation. There is a highly significant correlation between rainfall and lactation. The rainfall is critical determining food abundance and the rainy season is the best period for females to lactate to grow up their infants.




How to Cite

SAN, A.M. and HAMADA, Y. 2009. Reproductive Seasonality of Myanmar Long-tailed Macaque (Macaca fascicularis aurea). Tropical Natural History. 9, 2 (Oct. 2009), 223–234.