Possible antipredator behavior associated with river crossings by proboscis monkeys ( Nasalis larvatus )

Bibliographic Data

ID19388500
AuthorsCarey P Yeager (University of California, Davis, corresponding author)
Year1991
Volume24
Issue1
Pages61-66
Publication date1991-01-01
Open AccessYes
TypeARTICLE
VenueAmerican Journal of Primatology (JOURNAL)
Journal identifiersISSN: 0275-2565 • E-ISSN: 1098-2345
PublisherWiley (PUBLISHER • GB)
DOI10.1002/ajp.1350240107
OpenAlexW2064060545
LanguageEN
Citations received16
References cited9

Proboscis monkeys' ( Nasalis larvatus ) river crossing behavior was examined as a potential behavioral response to predation threat. N. larvatus ' major predator at the Tanjung Puting National Park in Kalimantan Tengah, Indonesia, appeared to be the false gavial ( Tomistoma schlegeli ), a crocodilian. An adolescent female proboscis monkey was captured and drowned by a false gavial during this study. The monkeys crossed the river at its more narrow points, with several individuals or groups crossing simultaneously. Increased vigilance prior to crossing and leaping as far across the river as possible were also observed. Proboscis monkey groups often associate at their sleeping sites at the river's edge. A potential function of these associations may be to allow groups to synchronize their movement with other groups during river crossings

Biology · Predation · Proboscis · Zoology · Animal Behavior and Reproduction · Animal Vocal Communication and Behavior · Primate Behavior and Ecology · Ecology

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