scholarly journals Faecal Particle Size in Free-Ranging Proboscis Monkeys, Nasalis larvatus: Variation between Seasons

2018 ◽  
Vol 89 (5) ◽  
pp. 327-334 ◽  
Author(s):  
Valentine Thiry ◽  
Marcus Clauss ◽  
Danica J. Stark ◽  
Roseline C. Beudels-Jamar ◽  
Régine Vercauteren Drubbel ◽  
...  
Keyword(s):  
Particle Size ◽  
Nasalis Larvatus ◽  
Free Ranging ◽  
Proboscis Monkeys

Faecal particle size in free-ranging primates supports a ‘rumination’ strategy in the proboscis monkey (Nasalis larvatus)

Oecologia ◽  
2014 ◽  
Vol 174 (4) ◽  
pp. 1127-1137 ◽  
Author(s):  
Ikki Matsuda ◽  
Augustine Tuuga ◽  
Chie Hashimoto ◽  
Henry Bernard ◽  
Juichi Yamagiwa ◽  
...  
Keyword(s):  
Particle Size ◽  
Proboscis Monkey ◽  
Nasalis Larvatus ◽  
Free Ranging

scholarly journals Fecal Nutrients Suggest Diets of Higher Fiber Levels in Free-Ranging than in Captive Proboscis Monkeys (Nasalis larvatus)

2018 ◽  
Vol 4 ◽  
Author(s):  
Ikki Matsuda ◽  
Henry Bernard ◽  
Augustine Tuuga ◽  
Sen K. S. S. Nathan ◽  
John C. M. Sha ◽  
...  
Keyword(s):  
Nasalis Larvatus ◽  
Free Ranging ◽  
Proboscis Monkeys

Analysis of fecal nutrients and particle size in captive proboscis monkeys ( Nasalis larvatus ) fed seasonal dietary foliage at a Japanese zoo

2021 ◽  
Vol 92 (1) ◽  
Author(s):  
Ryuta Kawasaki ◽  
Maki Kawakita ◽  
Kenta Kurosawa ◽  
Sanae Asano ◽  
Hiroshi Kajikawa
Keyword(s):  
Particle Size ◽  
Nasalis Larvatus ◽  
Proboscis Monkeys

Ingesta particle size, food handling and ingestion in the tammar wallaby (Macropus eugenii Desmarest)

1999 ◽  
Vol 47 (1) ◽  
pp. 75 ◽  
Author(s):  
R. G. Lentle ◽  
K. J. Stafford ◽  
M. A. Potter ◽  
B. P. Springett ◽  
S. Haslett
Keyword(s):  
Particle Size ◽  
New Zealand ◽  
Particle Size Distribution ◽  
Stomach Contents ◽  
Tammar Wallaby ◽  
Food Handling ◽  
Macropus Eugenii ◽  
Food Particles ◽  
Chewing Rates ◽  
Free Ranging

The particle size distribution of stomach contents from 25 tammar wallabies (Macropus eugenii Desmarest) shot in the Okataina State Forest and adjoining farmland near Rotorua, New Zealand, were determined. There was a greater percentage of finer, and a smaller percentage of larger, particles than reported in the stomach contents of larger macropods. The chewing and biting activities of four free-ranging tammars fitted with radio-microphone collars were monitored. Chewing rates (chews per minute) were similar to those of other small herbivorous vertebrates. There were significantly lower rates of chewing and higher chew-to- bite ratios when browsing than when grazing. Observations of browsing by three captive tammars showed inefficient handling by mutually opposed palms and digitopalmar grip, resulting in low rates of ingestion. We suggest that tammars lower the time necessary for fermentation of food by reducing the size of food particles, and that their choice between graze and browse is influenced by food handling and chewing investment.

Helminth parasites occurrence in wild proboscis monkeys ( Nasalis larvatus ), endemic primates to Borneo Island

2019 ◽  
Vol 48 (6) ◽  
pp. 357-363
Author(s):  
Madinah Adrus ◽  
Ramlah Zainuddin ◽  
Nur Hidayah Ahmad Khairi ◽  
Mariana Ahamad ◽  
Mohd‐Tajuddin Abdullah
Keyword(s):  
Helminth Parasites ◽  
Nasalis Larvatus ◽  
Proboscis Monkeys

scholarly journals Population of Proboscis Monkey (Nasalis lavatus) in Manggar River, Balikpapan City, Indonesia

2021 ◽  
Vol 886 (1) ◽  
pp. 012068
Author(s):  
Ike Mediawati ◽  
Teguh Muslim ◽  
Amir Ma’ruf ◽  
Mukhlisi ◽  
Hery Seputro ◽  
...  
Keyword(s):  
Population Density ◽  
Sex Ratio ◽  
Anthropogenic Activities ◽  
Proboscis Monkey ◽  
Adult Males ◽  
Conservation Area ◽  
Nasalis Larvatus ◽  
Survey Technique ◽  
Males And Females ◽  
Proboscis Monkeys

Abstract A population estimation of proboscis monkeys (Nasalis larvatus) has been conducted in Manggar River, Balikpapan. In this non-conservation area, the anthropogenic activities threaten the proboscis monkey habitat. Boat survey technique was applied along ± 17 km of the river in the morning and evening. The number of proboscis monkeys in the surveyed area was estimated to range from 57 to 69 individuals with estimated population density of 4.75 individuals/Km2. Moreover, the population of this primates was divided into 4 groups and the sex ratio between adult males and females was 1:2.33. The proboscis monkeys were distributed in the middle of the river to the upstream. The highest population was found in the upstream area with less human activities. Conservation efforts in the Manggar River need to be carried out considering the proboscis monkey habitat in the area has been fragmented and isolated. These efforts could involve local economic communities.

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