西藏雅鲁藏布大峡谷国家级自然保护区金猫的色型类别与活动节律

2013-2018年间采用红外相机技术对西藏雅鲁藏布大峡谷国家级自然保护区的金猫(Catopuma temminckii)进行长期监测, 累计布设70个点位, 14,071个相机工作日。共收集金猫独立照片101张, 其中60张可识别色型, 占金猫独立照片总数的59.40%。共记录到4种不同色型的金猫个体, 拍摄频次比例为麻褐色型:红棕色型:黑色型:灰色型 = 46:7:4:3; 其中灰色型为我国野生金猫实体首次记录。不同色型的个体可同域分布, 而以雅鲁藏布大峡谷自然保护区为代表的藏东南地区是我国金猫色型变异最丰富的地区。基于红外相机照片对金猫的共性形态特征和不同色型的独特形态特征进行了详细的图文描述, 以期为该物种的深入研究提供详实的基础资料。活动节律的分析结果显示, 研究区内金猫以昼行性活动为主, 10:00-12:00为其最强的活动高峰。不同月份的日活动差异指数(daily-discrepancy index) α和昼行性指数(diurnal-nocturnal index) β均存在显著差异, 且活动强度具有明显的季节性变化, 不同季节的活动峰型存在显著差异。本研究为东喜马拉雅生物多样性热点区动物多样性本底的完善积累了基础资料, 也为后续的猫科动物色型多样性的形成机制研究提供了基础信息与参考。

Coat pattern variation and activity rhythm of Asiatic golden cat (Catopuma temminckii) in Yarlung Zangbo Grand Canyon National Nature Reserve of Tibet,China

From 2013 to 2018 we conducted camera-trapping surveys on the elusive Asiatic golden cat (Catopuma temminckii) in Yarlung Zangbo Grand Canyon National Nature Reserve, Tibet. With an extensive survey effort of 14,071 camera-days at 70 camera stations, we obtained 101 independent detections of Asiatic golden cat, of which 60 (59.4%) were captured during day time and used to identify the coat markings of each captured individual. Four types of coat variations were detected and defined. The capture rates were: 46 common form, 7 red form, 4 melanistic form, and 3 gray form. The gray form was the first ever record in China. Results indicate that individuals of different forms could be co-existing and southeast Tibet has the most diverse coat variations of Asiatic golden cat in China. We described the morphological characteristics shared among and between the different forms, which will provide a sound foundation for further research on this species. The Asiatic golden cats in the study area showed a diurnal activity rhythm with the highest activity peak between 10:00 and 12:00. There were significant differences in daily-discrepancy index α and diurnal-nocturnal index β in different months and the activity intensity and peak patterns had obvious seasonal changes. This study has accumulated basic data for wildlife inventory of the East Himalayan biodiversity hotspot, and also provided basic information and reference for subsequent research on the mechanisms determining coat variations of felid species.