Orang-utan conservation and rehabilitation in Sumatra

Rijksen, H. D.

doi:10.1016/0006-3207(74)90037-8

Cited by 26 publications

(19 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On the IUCN Red List Sumatran orangutan (Pongo abelii) are critically endangered (IUCN 2004). The main threats to their survival are hunting, trade, and habitat loss (Rijksen 1974;Rijksen and Meijaard 1999;Robertson and van Schaik 2001;Singleton et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Intestinal Parasites of Free-ranging, Semicaptive,and Captive Pongo abelii in Sumatra, Indonesia

et al. 2007

View full text Add to dashboard Cite

We collected fecal samples from 32 free-ranging, 19 semicaptive, and 54 captive Sumatran orangutans on Sumatra from 1998 until 2004 and screened them for gastrointestinal parasites. Our objectives were to compare the intestinal parasites of free-ranging, semicaptive, and captive orangutans and to evaluate the risk of parasite transmission in orangutan reintroduction programs. We identified 4 genera of Protozoa, 7 genera of nematodes, 1 trematode sp., and 1 cestode sp. The prevalence of Balantidium coli in free-ranging orangutans was significantly higher than in captive individuals. However, the prevalence of Strongyloides sp. was higher in captive than in free-ranging orangutans. Free-ranging female orangutans had a significantly higher total prevalence of intestinal parasites than that of males. We found no significant difference between parasite prevalences in different age groups. Compared to gorillas and chimpanzees, orangutans carry a smaller variety of protozoan and nematode species. Strongyloides sp. infections form the highest risk in reintroduction programs as crowding, ground-dwelling, and poor hygiene in captive and semicaptive orangutans may cause a constant reinfection.

show abstract

Section: Introductionmentioning

confidence: 99%

Intestinal Parasites of Free-ranging, Semicaptive,and Captive Pongo abelii in Sumatra, Indonesia

et al. 2007

View full text Add to dashboard Cite

show abstract

“…The orang-utan population in the area has been studied continuously since 1971 [c.g., Rijksen, 1974;Schiirmann, 1981;Sugardjito 1983, in press], and the study site has been described in detail by Rijksen [1978]. From February 1980 until December 1982, seven individual orang-utans were followed more or less regularly as target animals from dawn to dusk [Altmann, 1974].…”

Section: Methodsmentioning

confidence: 99%

Age-Sex Class Differences in the Positional Behaviour of the Sumatran Orang-Utan (Pongo pygmaeus abelii) in the Gunung Leuser National Park, Indonesia

Sugardjito¹,

Hooff²

1986

IJFP

115

View full text Add to dashboard Cite

During a three-year field study of the socio-ecology of Sumatran orang-utans, their use of the canopy was investigated in the Gunung Leuser National Park, Indonesia. This paper concerns the positional behaviour of different age-sex classes of orang-utans. Adolescents and females with infants differed significantly from an adult male in the following respects: (1) the use of locomotion types (more ‘quadrumanous scrambling’ and perhaps also ‘quadrupedal walking’ and less ‘tree swaying’); (2) substrate use during resting, and (3) travelling and resting heights. We suggest that large body size restricts the travel route options in higher forest strata and necessitates the use of the lower stratum. Here, ‘tree swaying’ is an efficient method of progression, particularly for heavy animals. Mothers with infants are forced to travel in the lower zones as well. The fact that they return to a greater heights when they go to rest might suggest that they travel lower in spite of a greater predation risk.

show abstract

“…This should also be carried out after the gibbons have been released (Goossens et al , 2001). Where detailed parasite screening cannot be performed, routine deworming should be carried out every 3 months using drugs such as ivermectin and fenbendazole (Rijksen, 1974). TB testing: TB is a human disease that can cause significant mortality and morbidity in gibbons and other primates.…”

Section: Arrival At the Centre: Behavioural Assessment Quarantine Anmentioning

confidence: 99%

Proposed guidelines forin situgibbon rescue, rehabilitation and reintroduction

Cheyne

Campbell²,

Payne³

2011

International Zoo Yearbook

View full text Add to dashboard Cite

Sanctuaries and rehabilitation centres must strive to demonstrate not only a welfare benefit to individuals but also a measurable contribution to the conservation of species. We will discuss how to carry out the rescue, rehabilitation and reintroduction of gibbons and the rationale behind the process, based on what is known and is being learnt about rehabilitating these species. This document is focused on guidelines for in situ rescue, rehabilitation and release, to account for the limitations in access to resources in developing countries. Some of the suggestions mentioned here may not be practical for all rehabilitation centres. This essay is not designed to be a complete guide to the rehabilitation and welfare of gibbons but should be used as a template. It is intended to be the beginnings of a living document and is formed from personal observations and, where noted, from procedures being used at the Kalaweit Gibbon Rehabilitation Project in Kalimantan, Indonesia, from the Javan Gibbon Centre in Java, Indonesia, and from an extensive search of the literature. Standardizing procedures across all in situ rehabilitation centres will help to prevent the repetition of mistakes and ensure that all centres follow similar medical and husbandry procedures for these threatened species.

show abstract

Orang-utan conservation and rehabilitation in Sumatra

Cited by 26 publications

References 2 publications

Intestinal Parasites of Free-ranging, Semicaptive,and Captive Pongo abelii in Sumatra, Indonesia

Intestinal Parasites of Free-ranging, Semicaptive,and Captive Pongo abelii in Sumatra, Indonesia

Age-Sex Class Differences in the Positional Behaviour of the Sumatran Orang-Utan (Pongo pygmaeus abelii) in the Gunung Leuser National Park, Indonesia

Proposed guidelines forin situgibbon rescue, rehabilitation and reintroduction

Contact Info

Product

Resources

About