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Predicting the Potential Impacts of Trophy Hunting on Population Structure of Himalayan Ibex (Capra sibirica) in Northern Pakistan

Khan Muhammad Zafar, Begum Farida, Riaz Muhammad, Khan Babar, Karim Rehmat, Ali Karamat, Aman Safina

Polish Journal of Ecology

2019

Vol. 67, nr 3

264--270

We compared population structure and trophy hunting statistics of Himalayan ibex (Capra sibirica) in two community-controlled hunting areas (CCHAs) of northern Pakistan with varying duration of trophy hunting and isolated populations of C. sibirica. Based on fixed-point direct count method during winter 2016-2017, 939 ibexes were counted in Khyber and 346 in Hussaini, with a density of 7.5 and 3.2 animals km-2, respectively. Though the populations of C. sibirica at both the study sites have increased compared to the past estimates, we found variations in population structures and horn sizes, presumably as a result of trophy hunting. The sex ratios are skewed toward females in Khyber (87 males/100 females) and towards males in Hussaini (115 males/100 females). The trophy size males were 7% of the population in Khyber and 11% in Hussaini. Mean group (herd) size in Khyber was 28 (range = 1-117) and Hussaini was 20 (range = 1-79). Mean horn size of the trophies harvested in Khyber was 102 cm (± range = 91-114) compared to 108 cm (range = 99-121) in Hussaini. Stringent regulatory measures are suggested to determine the number of permits.