The food availability, composition of the diets and selective grazing of the Mongolian gazelle (Procapra gutturosa) were studied in Hulunber Grassland in Nei Monggol. The food availability of Mongolian gazelle showed ...The food availability, composition of the diets and selective grazing of the Mongolian gazelle (Procapra gutturosa) were studied in Hulunber Grassland in Nei Monggol. The food availability of Mongolian gazelle showed seasonal changes. The plant biomass was higher in spring and summer than that in autumn and winter. The fecal compositions of the gazelle demonstrated that fibrous parts occupied 62.4%, 74.8%, and 66.0% in spring, autumn, and winter, respectively. The Mongolian gazelle preferred to grazeCompositeae, Leguminosae, Allium spp. and other forbs in spring and autumn, while the grasses, such asAneurolepidium chinense andStipa spp. were selectively feeding in winter.展开更多
The Przewalski's gazelle,Procapra przewalskii,is one of the most endangered species in China,and is now found only in a single small area around the Lake Qinghai.In this study,the complete mitochondrial genome of ...The Przewalski's gazelle,Procapra przewalskii,is one of the most endangered species in China,and is now found only in a single small area around the Lake Qinghai.In this study,the complete mitochondrial genome of P.przewalskii was determined and annotated.The circular genome is 16 547-bp long,containing13 protein-coding genes,22 transfer RNA genes,2 ribosomal RNA genes,and a predicted control region.The overall base composition was 34.0% A,24.7% C,28.3% T,and 13.0% G,with a total A + T content of 62.3%.Phylogenetic analysis of all 19 Bovidae species indicated that P.przewalskii showed a close relationship to Procapra gutturosa.Our results provide a great deal of useful information on further studies for conservation biology of Przewalski's gazelle.展开更多
Przewalski’s gazelle Procapra przewalskii is an endangered species endemic to China. A question remains about subspecific variation in this species. Skulls of Przewalski’s gazelle collected from its current remnant ...Przewalski’s gazelle Procapra przewalskii is an endangered species endemic to China. A question remains about subspecific variation in this species. Skulls of Przewalski’s gazelle collected from its current remnant ranges around the Qinghai Lake in combination with those collected prior to the 20th century were measured and analyzed using Hierarchical Cluster Analysis in order to clarify the question. Unexpectedly, P. p. diversicornis, extirpated from its historic range, has spread to the Qinghai Lake region where it has replaced nominotypical P. p. przewalskii and is now restricted to a few small isolated populations around the lake. We discuss the causes of this unexpected replacement. In this study, we discuss the possibility of a new form, possibly a new subspecies, in the Guide Basin, adjacent to Qinghai Lake; it is unclear whether the new form has long existed and was only discovered in recent years, or whether it evolved in recent times due to the geographical isolation and anthropogenic landscape features. The study sheds light on the processes of microevolution and subspeciation in Procapra przewalskii, and based on the findings, we propose measures for conservation strategies for Przewalski’s gazelle.展开更多
The distribution, size and habitat of Tibetan gazelle （Procapra picticaudata）population have been investigated in Shiqu County of Sichuan Province from June to August of 1999 and July to August of 2003. 195 sampling...The distribution, size and habitat of Tibetan gazelle （Procapra picticaudata）population have been investigated in Shiqu County of Sichuan Province from June to August of 1999 and July to August of 2003. 195 sampling belts （3 km×3 km） were made in total, which covered 10.8% of the whole grassland. The results showed that average density of Tibetan gazelles was 0.117 individuals/km(2a in Shiqu County, and their population size was about 1 901 individuals.They mainly occurred from （4 200） to （4 700） m altitude （88.3%）.Aggregation characterized distribution pattern of Tibetan gazelles that can be divided into three types:male-only groups（42.1%）, female-only groups（21.1%）and mother-offspring groups（36.8%）, with main group size varied from 2 to 8 individuals （83%） and mean group size 4.8 individuals. 42 sampling plots （20 m ×20 m） were set at least every 100 m apart. Factor analysis indicated that more away from residence （69%） and closer to water source （93%） were characteristic of Tibetan gazelle habitat. It was usually located in sunny （79%）, drafty（83%） and smooth grassland slope （95%） with favorable concealing condition （52%）, where vegetation was mainly 5-8 cm in height （62%）and 75%- 90% in canopy （64%）.展开更多
文摘The food availability, composition of the diets and selective grazing of the Mongolian gazelle (Procapra gutturosa) were studied in Hulunber Grassland in Nei Monggol. The food availability of Mongolian gazelle showed seasonal changes. The plant biomass was higher in spring and summer than that in autumn and winter. The fecal compositions of the gazelle demonstrated that fibrous parts occupied 62.4%, 74.8%, and 66.0% in spring, autumn, and winter, respectively. The Mongolian gazelle preferred to grazeCompositeae, Leguminosae, Allium spp. and other forbs in spring and autumn, while the grasses, such asAneurolepidium chinense andStipa spp. were selectively feeding in winter.
基金Supported by National Natural Science Foundation of China(31301976)the Innovation Project of Chinese Academy of Agricultural Sciences(CAAS-ASTIP-2014-LIHPS-01)
文摘The Przewalski's gazelle,Procapra przewalskii,is one of the most endangered species in China,and is now found only in a single small area around the Lake Qinghai.In this study,the complete mitochondrial genome of P.przewalskii was determined and annotated.The circular genome is 16 547-bp long,containing13 protein-coding genes,22 transfer RNA genes,2 ribosomal RNA genes,and a predicted control region.The overall base composition was 34.0% A,24.7% C,28.3% T,and 13.0% G,with a total A + T content of 62.3%.Phylogenetic analysis of all 19 Bovidae species indicated that P.przewalskii showed a close relationship to Procapra gutturosa.Our results provide a great deal of useful information on further studies for conservation biology of Przewalski's gazelle.
基金supported by the Key Program of Knowledge Innovation Program of Chinese Academy of Sciences (KSCX2-EW-Z-4)Sir Peter Scott Fund of SSC/IUCN and National Natural Science Foundation of China (30670267, 30430120)
文摘Przewalski’s gazelle Procapra przewalskii is an endangered species endemic to China. A question remains about subspecific variation in this species. Skulls of Przewalski’s gazelle collected from its current remnant ranges around the Qinghai Lake in combination with those collected prior to the 20th century were measured and analyzed using Hierarchical Cluster Analysis in order to clarify the question. Unexpectedly, P. p. diversicornis, extirpated from its historic range, has spread to the Qinghai Lake region where it has replaced nominotypical P. p. przewalskii and is now restricted to a few small isolated populations around the lake. We discuss the causes of this unexpected replacement. In this study, we discuss the possibility of a new form, possibly a new subspecies, in the Guide Basin, adjacent to Qinghai Lake; it is unclear whether the new form has long existed and was only discovered in recent years, or whether it evolved in recent times due to the geographical isolation and anthropogenic landscape features. The study sheds light on the processes of microevolution and subspeciation in Procapra przewalskii, and based on the findings, we propose measures for conservation strategies for Przewalski’s gazelle.
文摘The distribution, size and habitat of Tibetan gazelle （Procapra picticaudata）population have been investigated in Shiqu County of Sichuan Province from June to August of 1999 and July to August of 2003. 195 sampling belts （3 km×3 km） were made in total, which covered 10.8% of the whole grassland. The results showed that average density of Tibetan gazelles was 0.117 individuals/km(2a in Shiqu County, and their population size was about 1 901 individuals.They mainly occurred from （4 200） to （4 700） m altitude （88.3%）.Aggregation characterized distribution pattern of Tibetan gazelles that can be divided into three types:male-only groups（42.1%）, female-only groups（21.1%）and mother-offspring groups（36.8%）, with main group size varied from 2 to 8 individuals （83%） and mean group size 4.8 individuals. 42 sampling plots （20 m ×20 m） were set at least every 100 m apart. Factor analysis indicated that more away from residence （69%） and closer to water source （93%） were characteristic of Tibetan gazelle habitat. It was usually located in sunny （79%）, drafty（83%） and smooth grassland slope （95%） with favorable concealing condition （52%）, where vegetation was mainly 5-8 cm in height （62%）and 75%- 90% in canopy （64%）.
