Orangutan death and scavenging by pigs

Area of Science:

• Primate Paleontology
• Wildlife Ecology
• Zooarchaeology

Background:

• Fossilization of primate remains, particularly pongids (great apes), is exceptionally rare in tropical rainforest environments.
• Understanding the taphonomic processes affecting primate carcasses is crucial for interpreting the fossil record.

Purpose of the Study:

• To investigate the role of wild pigs in the destruction of primate carcasses in tropical ecosystems.
• To provide a potential explanation for the scarcity of pongid remains in the fossil record.

Main Methods:

• Direct observation of a Bornean bearded pig (Sus barbatus) interacting with an orangutan (Pongo pygmaeus) carcass.
• Recovery and analysis of primate skeletal elements, specifically an orangutan skull fragment.

Main Results:

• Documented evidence of a Bornean bearded pig actively scavenging an orangutan carcass.
• Recovery of an orangutan skull fragment, indicating post-mortem modification by scavengers.
• Findings corroborate similar observations of pig scavenging on pongid remains in Africa.

Conclusions:

• Wild pig scavenging behavior significantly contributes to the rapid destruction and dispersal of pongid carcasses.
• This taphonomic agent likely plays a key role in the underrepresentation of pongid fossils in tropical rainforests.