Seed spitting and seed swallowing by wild orang-utans (pongo pygmaeus morion) in Sabah, Malaysia

Hamisah Elahan, and Isabelle Lackman-Ancrenaz, and Marc Ancrenaz, (2006) Seed spitting and seed swallowing by wild orang-utans (pongo pygmaeus morion) in Sabah, Malaysia. Journal of Tropical Biology & Conservation (JTBC), 1 (2). pp. 65-70. ISSN 1832-3902


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Wild orang,utans (Pongo pygmaeus morio) studied at the “Kinabatangan Orang-utan Conservation project�, Sabah, Malaysia, are mainly frugivorous. They are regularly observed to swallow large seeds (length longer than five mm) from 37 different plant genera and to spit large seeds from 27 plant genera. For three of these genera, we compared the time to first germination, the germination success, the 50%, germination time and seedling mortality of seeds that were spat out, swallowed or left unprocessed by orang-utans. Our results show that mean time from planting to germination was shorter and seed germination rate was higher for seeds swallowed or spar than for seeds collected from the parent tree for two tee species (Dracontomelon dao and Koordensiodendron pinnatum, both species being part of the Anacardiaceae Family). For D .dao, germination success was better for seeds that were spat than swallowed, showing the potential importance of seed-cleaning and seed-spitting by orang-utans for certain tree species occurring within the natural orang-utan habitat.

Item Type: Article
Uncontrolled Keywords: Pongo pygmaeus, seed spitting, seed germinaton, Sabah
Subjects: Q Science > QL Zoology
Divisions: SCHOOL > Institute for Tropical Biology and Conservation
Depositing User: Users 83 not found.
Date Deposited: 22 Feb 2017 06:08
Last Modified: 11 Oct 2017 02:36

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