Preliminary report on yellow long-tailed macaques (Macaca fascicularis) at Kosumpee Forest Park, Thailand.
We conducted a census on long-tailed macaques (Macaca fascicularis) at Kosumpee Forest Park, Thailand, and found 15 individuals of yellow pelage color out of a total of 287 individuals. There were three troops, designated A, B and C, but the yellow macaques were found only in B and C troops. The frequency of yellow macaques was 5.2% in the total population and 4.2 and 9.9% in B and C troops, respectively. These frequencies are much higher than those in rhesus macaques (M. mulatta) reared at Cayo Santiago (0.52%). They are, however, lower than those of 10 years ago.
Hamada
Yuzuru
Y
Section of Morphology, Department of Evolution and Phylogeny, Primate Research Institute, Kyoto University, Inuyama, Aichi, Japan. hamada@pri.kyoto-u.ac.jp
Hadi
Islamul
I
Urasopon
Nontakorn
N
Malaivijitnond
Suchinda
S
D000818:Animals; D019352:Censuses; D006197:Hair / Q000502:physiology*; D008252:Macaca fascicularis / Q000502:physiology*; D010858:Pigmentation / Q000502:physiology*; D025341:Principal Component Analysis; D013785:Thailand