Results 111 to 120 of about 335 (139)

Notes on the sexual behavior of the proboscis monkey (Nasalis larvatus)

American Journal of Primatology, 1990
AbstractProboscis monkey (Nasalis larvatus) sexual behavior was studied at the Tanjung Puting National Park in Kalimantan Tengah, Indonesia, for 12 months. Data were collected on one‐male groups and all‐male groups using event sampling for copulations, presents, and same‐sex mounts.
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Notes on the Size and Composition of Groups of Proboscis Monkey, Nasalis larvatu s

Folia Primatologica, 1982
Proboscis monkeys, Nasalis larvatus, were observed from a boat in coastal mangrove swamps in Brunei. The size of foraging parties varied from 2 to 63 individuals and there was evidence that these parties were of ephemoral composition. Mean group size was 13.8 (mode 6-10). Overall, parties comprised males:females:juveniles in the ratio 1:2.6:1.8.
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Proboscis monkey (Nasalis larvatus) social organization: Group structure

American Journal of Primatology, 1990
AbstractProboscis monkey (Nasalis larvatus) social organization was studied at the Tanjung Puting National Park in Kalimantan Tengah, Indonesia, for 12 months. Data were collected on one‐male groups and all‐male groups by using scan sampling and event sampling while following groups. Evening census surveys were also conducted.
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The chromosome complement ofNasalis larvatus (Wurm 1781)

Experientia, 1966
I cromosomi diNasalis larvatus presentano un numero diploide di 2n=48. Il cariotipo presenta moite similitudini con quello delle altreColobinae e con leHylobatinae.
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Clouded leopard (Neofelis diardi) predation on proboscis monkeys (Nasalis larvatus) in Sabah, Malaysia

Primates, 2008
In this study, we have reported two direct observations of individuals from a one-male group of proboscis monkeys (Nasalis larvatus) being killed by clouded leopards (Neofelis diardi) in the riverine forest along the Menanggul river, a tributary of the Kinabatangan river in Sabah, Malaysia.
Ikki, Matsuda, Augustine, Tuuga, Seigo, Higashi   +2 more
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Birth-related behaviors in wild proboscis monkeys (Nasalis larvatus)

Primates, 1996
Two births of wild proboscis monkeys took place during a 1991/1992 field study at Tanjung Puting National Park, Indonesia. After conception, both females continued copulating with their group’s male. One of the births took place during the night, the other during mid-morning.
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Ecology and behavior of the wild proboscis monkey,Nasalis larvatus (Wurmb), in Sabah, Malaysia

Primates, 1972
Proboscis monkeys,Nasalis larvatus (Wurmb), were investigated in the Padas Bay and Kinabatangan River areas, Sabah, from July 1968 to March 1969. The proboscis monkey is a common, widely distributed species of coloboids in Sabah, living in the various vegetations that extend from the coastal swamp to the inland plain.
Munemi Kawabe, Tetsuzo Mano
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Proboscis Monkey (Nasalis larvatus): Bio-ecology and Conservation

2009
Proboscis monkeys (Nasalis larvatus) are endemic to Borneo and primarily reside in peat swamp forest, mangrove, and riparian forest. Some smaller populations have also been found in upstream dipterocarp forest, as well as in rubber plantations, 300 km from coastal areas (Soendjoto 2003).
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Characteristics of Night Sleeping Trees of Proboscis Monkeys (Nasalis larvatus) in Sabah, Malaysia

International Journal of Primatology, 2010
Primates spend about half of their lives at sleeping sites, and their choice of sleeping sites may affect individual survival. We identified a total of 88 trees used by proboscis monkeys (Nasalis larvatus) as night sleeping sites on 16 nights from June to September 2008 in riverine, mangrove, and mixed mangrove–riverine forests along the Garama River ...
Henry Bernard, Ikki Matsuda, Goro Hanya, Abdul Hamid Ahmad   +3 more
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Proboscis monkey (Nasalis larvatus) social organization: Intergroup patterns of association

American Journal of Primatology, 1991
AbstractProboscis monkey (Nasalis larvatus) social organization was studied at the Natai Lengkuas station, Tanjung Puting National Park in Kalimantan Tengah, Indonesia. Data were collected on ten one‐male groups and two all‐male groups using scan sampling and event sampling during follows, and through evening census surveys.
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