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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
Sponsored by:Sichuan Society of Zoologists; Chengdu Giant Panda Breeding Research Foundation; Sichuan Association of Wildlife Conservation; Sichuan University
Address:College of Life Sciences, Sichuan University, No.29, Wangjiang Road, Chengdu, Sichuan Province, 610064, China
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Your Position :Home->Past Journals Catalog->2022 Vol.41 No.4

Daily Activity Pattern and Population Density of Tetraophasis obscurus in the Wanglang National Nature Reserve, Sichuan
Author of the article:CAO Yazhen1, ZHAO Lianjun2, ZHANG Taxing1, WANG Can1, ZHENG Yong2, XU Lu1, RAN Jianghong1*
Author's Workplace:1.Key Laboratory of Bio‑Resource and Eco‑Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, China
2.Wanglang National Nature Reserve Administration Bureau, Pingwu, Sichuan Province 622550, China
Key Words:daily activity pattern;population density;pheasant;camera?trapping;
Abstract:Chestnut‑throated partridge (Tetraophasis obscurus) is a class Ⅰ nationally key protected wild species endemic to China. The living habits and population parameters of this species are rarely studied. From 2020 to 2021, by combinedly using the camera‑trapping, line transect and point counting method, the daily activity pattern and population density of T. obscurus were investigated in the Wanglang National Nature Reserve, Sichuan Province. The results showed that T. obscurus distribution ranges from 2 773‒3 777 m in altitude, and the main active sites are in 3 200‒3 400 m. The species prefers to inhabit the coniferous forest, and mixed broadleaf⁃conifer forest, while no individuals are encountered in the meadow habitat. T. obscurus is diurnal‑active according to the graph of daily activity pattern plotted by Kernel density estimation and integrating data of a year. The activity pattern of T. obscurus showed single‑peak curve, and the activity intensity raised steeply after 06∶00, reaching the peak at 08∶00‒10∶00 and then dropped fast till 12∶00, declined gradually since and almost stopped at 20∶00. T. obscurus is most active in the morning in breeding and non‑breeding seasons, and showed bimodal daily activity patterns with no significant difference (Δ=0.79). The peak of activity curve of non‑breeding season was delayed by 1‒2 hours compared to that in breeding season. The average group size estimated by infrared camera detections is 2.63 individuals per flock, and 3 individuals per flock when analyzing the line transect survey records. Using line transect method or point counting method, the population density is estimated to be 7.60 individuals/km2 and 5.42‒6.18 individuals/km2, respectively. This study enriches the field ecology data of T. obscurus, provides scientific bases for the conservation management, population monitoring and status evaluation of the species.
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