Previous study using protein electrophoresis shows no polymorphism in 44 nuclear loci of Sichuan golden monkey (Rhinopithecus roxellana), which limits our understandings of its population genetic patterns in the nucle...Previous study using protein electrophoresis shows no polymorphism in 44 nuclear loci of Sichuan golden monkey (Rhinopithecus roxellana), which limits our understandings of its population genetic patterns in the nuclear genome. In order to obtain sufficient information, we scanned 14 microsatellite loci in a sample of 32 individuals from its three major habitats (Minshan, Qinling and Shen-nongjia). A considerable amount of polymorphisms were detected. The average heterozygosities in the local populations were all above 0.5. The differentiations among local populations were significant. There was evidence of geneflow among subpopulations, but geneflow between Qinling and Shennongjia local populations was the weakest. Minshan and Qinling populations might have gone through recent bottlenecks. The estimation of the ratio of the effective population sizes among local populations was close to that from census sizes. Comparisons to available mitochondria data suggested that R. roxellana’s social structures played an important role in shaping its population genetic patterns. Our study showed that the polymorphism level of R. roxellana was no higher than other endangered species; therefore, measures should be taken to preserve genetic diversity of this species.展开更多
The paper had analyzed landscape pattern of habitat of Sichuan golden monkey in Baihe Nature Reserve.The result showed:① there were altogether 5 069.00 patches at habitat of Sichuan golden monkey in Baihe Nature Rese...The paper had analyzed landscape pattern of habitat of Sichuan golden monkey in Baihe Nature Reserve.The result showed:① there were altogether 5 069.00 patches at habitat of Sichuan golden monkey in Baihe Nature Reserve,the patch density was 2 595 p/hm2,average patch area was 3.20 hm2,Shannon's diversity index was 2.49,patch richness was 68.00,total length of edge was 19 011 119.91 m,edge density was 97.34 m/km2,and landscape shape index was 35.19.② The quality of habitat of Sichuan golden monkey reduced,patches at the habitat were seriously fragmentized,and it urgently needed to enhance protection and increase investment.The paper suggested connecting fragmented habitats through establishing habitat corridor in nature reserve;strengthening resources protection and strictly examining development projects of tourist products;increasing scientific research and capital investment;adopting effective measures to ameliorate local community environment and relieving the pressure of nature reserve caused by people;intensifying relevant publicity and education,so as to improve quality of habitat of Sichuan golden monkey in the nature reserve and effectively protect this valuable species.展开更多
During two consecutive mating seasons from August 2001 to December 2002,we observed the sexual behavior of Sichuan golden monkeys in the Chengdu Zoo and the Shanghai Wild Animal Park. We collected urine samples from f...During two consecutive mating seasons from August 2001 to December 2002,we observed the sexual behavior of Sichuan golden monkeys in the Chengdu Zoo and the Shanghai Wild Animal Park. We collected urine samples from females in the early morning. We also measured urinary estradiol and progesterone levels using radioimmunoassay. Based on the estradiol concentration during the menstrual cycle, we discovered that the length of the menstrual cycle was 286 33±1 67 days. The length of pregnancy was about 200 days. The level of estradiol after impregnation was significantly different with the level during the same period in the non receptive part of the cycle. Thus we could diagnose early pregnancy in female Sichuan golden monkeys by checking their urinary estradiol level .展开更多
One of the major social-biological characteristics in the genus Rhinopithecus is that the animals live in large groups of tens to hundreds of individuals. Study of the distribution pattern of various age-sex classes i...One of the major social-biological characteristics in the genus Rhinopithecus is that the animals live in large groups of tens to hundreds of individuals. Study of the distribution pattern of various age-sex classes in the foraging Sichuan golden monkey troop has revealed that the spatial pattern of the Sichuan golden monkey group is an ellipse with its vertical axes longer than the horizontal axes. Most members are concentrated in the center and the center-back.Adult males gather in the front, the center and the back of the troop; adult females and the young assemble in the center and near-center; sub-adult males are mainly distributed in the center-back and back, but some are also seen in the front, front-center and center; sub-adult females are more or less uniformly dispersed. The spatial distribution of various age-sex classes seems well correspondent with their status and role in the group. This result indicates that the spatial distribution strategy adopted by Sichuan golden monkeys is展开更多
基金supported by Yunnan Science and Technology Committeethe National Namral Science Foundation of China(Grants No.30021004&3043010).
文摘Previous study using protein electrophoresis shows no polymorphism in 44 nuclear loci of Sichuan golden monkey (Rhinopithecus roxellana), which limits our understandings of its population genetic patterns in the nuclear genome. In order to obtain sufficient information, we scanned 14 microsatellite loci in a sample of 32 individuals from its three major habitats (Minshan, Qinling and Shen-nongjia). A considerable amount of polymorphisms were detected. The average heterozygosities in the local populations were all above 0.5. The differentiations among local populations were significant. There was evidence of geneflow among subpopulations, but geneflow between Qinling and Shennongjia local populations was the weakest. Minshan and Qinling populations might have gone through recent bottlenecks. The estimation of the ratio of the effective population sizes among local populations was close to that from census sizes. Comparisons to available mitochondria data suggested that R. roxellana’s social structures played an important role in shaping its population genetic patterns. Our study showed that the polymorphism level of R. roxellana was no higher than other endangered species; therefore, measures should be taken to preserve genetic diversity of this species.
基金Supported by Key Protection Project for Wildlife of State Forestry Bureau948 Project of State Forestry Bureau(2004-4-66)+1 种基金Key Planning Project of National Basic Research(2002CB111504)National Key Scientific and Technological Project of "Tenth Fifth"(2001BA510B06)~~
文摘The paper had analyzed landscape pattern of habitat of Sichuan golden monkey in Baihe Nature Reserve.The result showed:① there were altogether 5 069.00 patches at habitat of Sichuan golden monkey in Baihe Nature Reserve,the patch density was 2 595 p/hm2,average patch area was 3.20 hm2,Shannon's diversity index was 2.49,patch richness was 68.00,total length of edge was 19 011 119.91 m,edge density was 97.34 m/km2,and landscape shape index was 35.19.② The quality of habitat of Sichuan golden monkey reduced,patches at the habitat were seriously fragmentized,and it urgently needed to enhance protection and increase investment.The paper suggested connecting fragmented habitats through establishing habitat corridor in nature reserve;strengthening resources protection and strictly examining development projects of tourist products;increasing scientific research and capital investment;adopting effective measures to ameliorate local community environment and relieving the pressure of nature reserve caused by people;intensifying relevant publicity and education,so as to improve quality of habitat of Sichuan golden monkey in the nature reserve and effectively protect this valuable species.
基金中国科学院知识创新工程 (No .KSCX2 1 0 3No .KSCX2 SW 118)项目资助~~
文摘During two consecutive mating seasons from August 2001 to December 2002,we observed the sexual behavior of Sichuan golden monkeys in the Chengdu Zoo and the Shanghai Wild Animal Park. We collected urine samples from females in the early morning. We also measured urinary estradiol and progesterone levels using radioimmunoassay. Based on the estradiol concentration during the menstrual cycle, we discovered that the length of the menstrual cycle was 286 33±1 67 days. The length of pregnancy was about 200 days. The level of estradiol after impregnation was significantly different with the level during the same period in the non receptive part of the cycle. Thus we could diagnose early pregnancy in female Sichuan golden monkeys by checking their urinary estradiol level .
文摘One of the major social-biological characteristics in the genus Rhinopithecus is that the animals live in large groups of tens to hundreds of individuals. Study of the distribution pattern of various age-sex classes in the foraging Sichuan golden monkey troop has revealed that the spatial pattern of the Sichuan golden monkey group is an ellipse with its vertical axes longer than the horizontal axes. Most members are concentrated in the center and the center-back.Adult males gather in the front, the center and the back of the troop; adult females and the young assemble in the center and near-center; sub-adult males are mainly distributed in the center-back and back, but some are also seen in the front, front-center and center; sub-adult females are more or less uniformly dispersed. The spatial distribution of various age-sex classes seems well correspondent with their status and role in the group. This result indicates that the spatial distribution strategy adopted by Sichuan golden monkeys is
