Review of Gobi Bear Research (Ursus arctosgobiensis, Sokolovand Orlov, 1992)1

摘要

Gobi bear (Ursus arctosgobiensis, Sokolov, Orlov, 1992) is endangered and occurs only in isolated populations in the Southwestern part of Mongolia. It is listed in the Red book of Mongolia (1987, 1997, 2013) and is registered in Annex I of the Convention on international trade in endangered species (CITES, 1991). Hunting for the Gobi bear is prohibited by law in 1953, nowadays it is protected in the Great Gobi reserve. The article provides generalized information about habitat, behavior, diet, and mortality of Gobi bear. The research also touched upon the peculiarities of its historical distribution in Gobi (and the subsequent loss of habitat), movement, size, and taxonomic status. Previous analysis of mitochondrial DNA (Galbreath et al., 2007; McCarthy et al., 2009) showed that Gobi bear is similar to the subspecies Ursus arctos Preliminary analysis based on nuclear microsatellite markers indicates that Gobi bear is actually can be a separate subspecies of Ursus arctos gobiensis (Tumendemberel etal., 2015a). The analysis of 2835 places of encounters of five bears using GPS for the period from 2005 to 2009 has allowed estimating that within the Great Gobi reserve for the habitat of the Gobi bear suitable territory is about 23619.18 km~2. The current habitat is likely reduced by 60% from historical range. Based on the telemetry data and the results of genetic analyses, the current distribution of bears in the Gobi desert was estimated. Adult females have moved around an area of about 514 km~2 within 1009-1532 m above sea level around Shar Khuls oasis. Adult males moved through the area about 2465-2485 km2; altitudinal limits of 1122-1492 m. International Team Project on Gobi bear, together with researchers from the Gobi bear Fund, Institute of General and Experimental biology, Mongolian Academy of Sciences and the administration of the Great Gobi reserve in 2005 have used camera traps to estimate population size of Gobi bear. It is established that on the reserve territory at least 18 bears were including 7 males, 4 females, and 2 calves (Amgalan et al., 2005). Using genetic analyses (DNA microsatellites) from more than 1000 hair samples taken near 14 springs, it was calculated that during 2008-2009, these springs were visited by 22-31 individuals of Gobi bear, of which at least 14 males and 8 females (Tumendemberel et al., 2015).