Behavior and Food of Reintroduced Bornean Orangutan (Pongo pygmaeus wurmbii) at Feeding Site and Forest Area in Lamandau Wildlife Sanctuary

DOI

10.2991/absr.k.220406.060How to use a DOI?

Keywords

Bornean orangutan; Daily activities; Feed preferences; Feeding site; Lamandau nature sanctuary

Abstract

The Bornean orangutan (Pongo pygameus wurmbii) is a Critically Endangered large Asian primate. Reintroduction had been implemented to recover their population in the wild. The research was conducted in February-April 2021 at Lamandau Wildlife Sanctuary, aimed to identify behavior differences at the feeding site and forest, composition and preferences for additional and natural feed by following 6 reintroduced Bornean orangutans. The total observation duration was 219 hours using focal animal sampling and instantaneous records. Feed preferences data analysis using Neu index then categorized as rank, and Jacobs’s index then categorized as highly preferred, preferred, less preferred, not preferred, and uncategorized. The additional feed had little effect on the reintroduced orangutan’s arrival to the feeding location, hence their stay in the forest was longer than at the feeding site. The highest daily activities by age class and gender were foraging (32%) by adult female, resting (44%) by adolescent female, and moving (25%) by adult male and female. The part of plant that consumed were fruit (51%), young leaves 25%, and other parts of vegetation (15%). The first rank additional feed preference is banana (Musa sp.), and second is papaya (Carica papaya). The natural feed preferences of highly preferred were papung (Sandoricum ermarginatum, Di 0.73) and kumpang darah (Knema conferta, Di 0.66). Other categories are 9 species preferred, 7 species less preferred, 16 species not preferred, and 8 species uncategorized.

Copyright

© 2022 The Authors. Published by Atlantis Press International B.V.

Open Access

This is an open access article distributed under the CC BY-NC 4.0 license.

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TY  - CONF
AU  - Yulia Raudhatul Balaqis Zahro
AU  - Ani Mardiastuti
AU  - Dede Aulia Rahman
PY  - 2022
DA  - 2022/05/02
TI  - Behavior and Food of Reintroduced Bornean Orangutan (Pongo pygmaeus wurmbii) at Feeding Site and Forest Area in Lamandau Wildlife Sanctuary
BT  - Proceedings of the 7th International Conference on Biological Science (ICBS 2021)
PB  - Atlantis Press
SP  - 431
EP  - 436
SN  - 2468-5747
UR  - https://doi.org/10.2991/absr.k.220406.060
DO  - 10.2991/absr.k.220406.060
ID  - Zahro2022
ER  -