Observations on the sexual behavior and birth seasonality of proboscis monkey (Nasalis Larvatus) along the lower Kinabatangan, Northern Borneo

• Main Author: Ramesh Boonratana
• Other Authors: Mahidol University. Mahidol University International College. Science Division.
• Format: Article
• Language: English
• Published: 2015
• Subjects: Birth seasonality; Mating behavior; Nasalis larvatus; Proboscis monkey; Sexual behavior; Sexual harassment
• Online Access: https://repository.li.mahidol.ac.th/handle/123456789/10541
• Institution: Mahidol University

Sexual behavior of Nasalis larvatus was observed along the Lower Kinabatangan River in eastern Sabah, Bornean Malaysia, during a two-year field study. Eight sexual mounts and two non-sexual mounts in one-male groups were recorded using scan sampling and event sampling. All observed copulations compr...