首页|Positional behavior and canopy use of black snub-nosed monkeys Rhinopithecus strykeri in the Gaoligong Mountains, Yunnan, China

Positional behavior and canopy use of black snub-nosed monkeys Rhinopithecus strykeri in the Gaoligong Mountains, Yunnan, China

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Studies on positional behavior and canopy use are essential for understanding how arboreal animals adapt their morphological character-istics and behaviors to the challenges of their environment. This study explores canopy and substrate use along with positional behavior in adult black snub-nosed monkeys Rhinopithecus strykeri, an endemic, critically endangered primate species in Gaoligong Mountains, southwest China. Using continuous focal animal sampling, we collected data over a 52-month period and found that R. strykeri is highly arboreal primarily using the high layers of the forest canopy (15–30 m), along with the terminal zone of tree crowns (52.9％), medium substrates (41.5％), and oblique substrates (56.8％). We also found sex differences in canopy and substrate use. Females use the termi-nal zones (56.7％ versus 40.4％), small/medium (77.7％ versus 60.1％), and oblique (59.9％ versus 46.5％) substrates significantly more than males. On the other hand, males spend more time on large/very large (39.9％ versus 22.3％) and horizontal (49.7％ versus 35.2％) substrates. Whereas both sexes mainly sit (84.7％), and stand quadrupedally (9.1％), males stand quadrupedally (11.5％ versus 8.3％), and bipedally (2.9％ versus 0.8％) more often than females. Clamber, quadrupedalism, and leap/drop are the main locomotor modes for both sexes. Rhinopithecus strykeri populations never enter canopies of degenerated secondary forest and mainly use terminal branches in the middle and upper layers of canopies in intact mid-montane moist evergreen broadleaf forest and hemlock coniferous broadleaf mixed for-ests across their habitat.

arboreallocomotionMyanmar snub-nosed monkeypostures

Yin Yang、Dionisios Youlatos、Alison M Behie、Roula Al Belbeisi、Zhipang Huang、Yinping Tian、Bin Wang、Linchun Zhou、Wen Xiao

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Institute of Eastern Himalaya Biodiversity Research,Dali University,Dali,Yunnan 671003,China

School of Archaeology and Anthropology,Australian National University,Canberra,ACT 0200,Australia

International Centre of Biodiversity and Primate Conservation,Dali University,Dali,Yunnan 671003,China

Department of Zoology,School of Biology,Aristotle University of Thessaloniki,Thessaloniki,GR-54124,Greece

Lushui Bureau of Gaoligongshan National Nature Reserve,Liuku,Yunnan 673229,China

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国家自然科学基金Zoological Society for the Conservation of Species and Populations(Germany,Rhinopithecus.MMR.2015)Australian National University Fieldwork Funding for Higher Degree Research StudentsYoung talents program of ten thousand talents plan of Yunnan

31860168R61250FWYNWRQNBJ-2019-262

2022

动物学报(英文版)
中国科学院动物研究所,中国动物学会

动物学报(英文版)

CSCDSCI
影响因子：0.198
ISSN：1674-5507
年,卷(期)：2022.68(4)
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