NDLI: Effect of repeated exposures and sociality on novel food acceptance and consumption by orangutans

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Juichi Yamagiwa, Leszek Karczmarski (eds): Primates and cetaceans: field research and conservation of complex mammalian societies : Springer, Japan, 2014, 439 pp

Primates : Volume 55

Effect of repeated exposures and sociality on novel food acceptance and consumption by orangutans

Content Provider	Springer Nature Link
Author	Hardus, Madeleine E. Lameira, Adria R. Wich, Serge A. Vries, Han Wahyudi, Rachmad Shumaker, Robert W. Menken, Steph B. J.
Copyright Year	2014
Abstract	Hundreds of rehabilitant great apes have been released into the wild, and thousands await release. However, survival rates after release can be as low as 20 %. Several factors influence individuals’ survival rates, one of which is the capacity to obtain an adequate diet once released. Released individuals are faced with a mixture of familiar and novel foods in an unfamiliar forest; therefore, it is important to understand how they increase acceptance and consumption of novel foods. This is especially vital for omnivorous species, such as wild great apes, which consume several hundred species of different foods. We assessed the effects of repeated exposures and sociality (i.e. co-feeding in the presence of one or more other individuals) on the acceptance and consumption of novel foods by captive orangutans (Pongo sp). Repeated exposures of food (novel, at first) did not cause an increase of acceptance of food; in other words, the orangutans did not start to eat a food item after being exposed to that food more often, but repeated exposures of food increased consumption (i.e. quantity). After repeated exposures, the orangutans also became gradually more familiar with the food, decreasing their explorative behaviour. The presence of co-feeding conspecifics resulted in an increased acceptance of the novel food by orangutans, and they ate a larger amount of said foods than when alone. Repeated exposure and sociality may benefit rehabilitant great apes in augmenting and diversifying diet and, once practiced before release, may accelerate an individuals’ adaptation to their new habitat, improving survival chances. Great ape rescue, rehabilitation and reintroduction require large financial and logistic investments; however, their effectiveness may be improved at low cost and low effort through the suggested measures.
Starting Page	21
Ending Page	27
Page Count	7
File Format	PDF
ISSN	00328332
Journal	Primates
Volume Number	56
Issue Number	1
e-ISSN	16107365
Language	English
Publisher	Springer Japan
Publisher Date	2014-09-20
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Feeding behaviour Great ape Rehabilitation Novel food Reintroduction Release site Zoology Animal Ecology Behavioural Sciences Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology

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