关键词: 盘羊, 分布, 种群组成, 天敌, 护牧犬

Abstract: Tibetan argali (Ovis hodgsoni) was suspected to be extinct in the Ganzi Tibetan Autonomous Prefecture for a long time. No living individuals were found in the field surveys until the end of last century. We surveyed 12 counties and 34 rural towns in the Ganzi Prefecture by questionnaire and line transects in 2013-2018. We found 321 argali in 24 herds in the Shiqu County. The herds averaged 13.4 ± 11.4 (SD, range 1-41) individuals. Altogether we counted 45 lambs, 38 sub-adults, 110 adult males and 128 adult females. There were 14 herds comprised of only rams (7.4 ± 4.6) (range 1-15) individuals, 8 herds comprised of only females and juveniles (24.6 ± 13.0 ) (range 9-41) individuals, and 2 herds that were a mix of males, females and juveniles (8 and 12 individuals, respectively). The threats to the Tibetan argali include over-grazing, shepherd dogs, wolves (Canis lupus), snow leopards (Panthera uncia), and golden eagles (Aquila chrysaetos). We conservatively estimate argali density to be 0.33-0.57 ind./km². We suggest a more thorough survey be conducted to understand the distribution, habitat, and population status of argali within Shiqu County. Furthermore, we believe there is a need to develop programs to educate the public about the regions’ ecological needs and expand the ecotourism industry.

Key words: Tibetan argali (Ovis hodgsoni), Distribution, Herd structure, Predators, Shepherd dogs