Size and Shape Comparison Study in Four Spesies of Hylobates sp.

Abstract

Siamang and Wau-wau (Hylobates sp.) are found throughout rain forest in South East Asia, Sumatera, Java and Borneo. They are listed as an endangered species. The purpose of this study was to add some information about Siamang (H. syndactylus) and Wau-wau (H. moloch, H. agilis dan H. muelleri) characteristic. The study was done at Taman Margasatwa Ragunan Jakarta and Taman Safari Indonesia Cisarua Bogar. Number of animal to be observed were 26 head, there were nine of Siamang Sumatera, five orowa Jawa, eight of Wau-wau Tangan Hitam (black handed) and four of Wau-wau Abu-abu (Grey). Eight variables of body parts to be measured, values of the hand length, front body length, chest width, chest depth, biiliac width, bitrochanter width, chest girth, achilles' girth and the head parts to be measured were the head length, head width and head height. The t-test was used to took for the similarity and differentiation of the Hydobates body and head measurement. The Principle Component Analysis (PCA) were used for body measurements discrimination.