Fatality of a wild Bornean orangutan (Pongo pygmaeus morio): behavior and death of a wounded juvenile in Danum Valley, North Borneo.

Primates; Journal of Primatology
Tomoko KanamoriShiro Kohshima

Abstract

Reports of wild great ape fatalities have been very limited, and only two have described wild orangutan deaths. We found a wounded juvenile female Bornean orangutan on 7 October 2006 in the Danum Valley, Sabah, Malaysia, and observed the individual's behavior for 7 days until her death on 13 October 2006. The 5-6-year-old orangutan, which we had observed since 2004, was wounded in the left brachium, back, and right hand. The individual's behavior changed after injury; the mean nest-nest active time became significantly shorter than before injury (from 12 h 3 min to 9 h 33 min), the mean waking time became significantly later (0552-0629 hours) and the mean bedtime became significantly earlier (from 1747 to 1603 hours). In the activity budget, resting increased significantly from 28.0 to 53.3%. Traveling and feeding decreased significantly from 23.5 to 12.7% and from 45.6 to 32.8%, respectively. The rate of brachiation during traveling and nest making decreased, whereas ground activity increased from 0 to 9%. We observed one vomiting incident and four occurrences of watery diarrhea during the 7 days before the individual died. The results of an autopsy performed by a local veterinarian suggested that the cause of death was septic...Continue Reading

References

Dec 11, 2002·Journal of Human Evolution·Klaus Zuberbühler, David Jenny
Jul 10, 2004·Proceedings of the National Academy of Sciences of the United States of America·Adrienne ZihlmanChristophe Boesch
Oct 8, 2004·American Journal of Primatology·Martha M RobbinsEmma Stokes
Apr 14, 2006·Folia primatologica; international journal of primatology·Danielle E D'AmourBarbara Fruth
May 20, 2008·Primates; Journal of Primatology·Ikki MatsudaSeigo Higashi
Aug 25, 2009·Behavioral Ecology and Sociobiology·Lydia H BeaudrotAndrew J Marshall

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Citations

May 28, 2019·Scientific Reports·Cheryl D KnottTri Wahyu Susanto
Sep 8, 2016·Primates; Journal of Primatology·Renata S MendonçaTetsuro Matsuzawa
Dec 7, 2018·Journal of Human Evolution·Maria A van NoordwijkErik P Willems

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