检索结果-南通市图书馆

The evolution of cooperation in asymmetric systems

在线全文

学校读者我要写书评

暂无评论

Science china(Life sciences) 2010年第1期53卷 139-149页

作者： WANG RuiWu1 & SHI Lei2 1 state key laboratory of genetic resources and evolution,kunming institute of zoology,chinese academy of Science,kunming 6502.3,china 2 Statistics and Mathematics College,Yunnan University of Finance and Economics,kunming 650221,china state key laboratory of genetic resources and evolution Kunming Institute of Zoology Chinese Academy of Science Kunming 650223 Chin Statistics and Mathematics College Yunnan University of Finance and Economics Kunming 650221 China

Explaining the "Tragedy of the Commons" of the evolution of cooperation remains one of the greatest problems for both biology and social *** interaction,which is one of the most important characteristics of cooperative systems,has not been sufficiently considered in the existing models of the evolution of *** the inequality in the number and payoff between the cooperative actors and recipients in cooperation systems,discriminative density-dependent interference competition will occur in limited dispersal *** model and simulation show that the local but not the global stability of a cooperative interaction can be maintained if the utilization of common resource remains unsaturated,which can be achieved by density-dependent restraint or competition among the cooperative *** intense density dependent interference competition among the cooperative actors and the ready availability of the common resource,with a higher intrinsic contribution ratio of a cooperative actor to the recipient,will increase the probability of *** cooperation between the recipient and the cooperative actors can be transformed into conflict and,it oscillates chaotically with variations of the affecting factors under different environmental or ecological *** higher initial relatedness(*** to kin or reciprocity relatedness),which is equivalent to intrinsic contribution ratio of a cooperative actor to the recipient,can be selected for by penalizing less cooperative or cheating actors but rewarding cooperative individuals in asymmetric *** initial relatedness is a pivot but not the aim of evolution of *** explains well the direct conflict observed in almost all cooperative systems.

关键词： cooperation altruism density dependent tragedy of the commons oscillation chaos asymmetric interaction interference competition

Application of the phylogenetic analysis in mitochondrial disease study

在线全文

学校读者我要写书评

暂无评论

chinese Science Bulletin 2008年第18期53卷 2733-2738页

作者： WANG ChengYe1,2,3, KONG QingPeng1,2 & ZHANG YaPing1,2? 1 state key laboratory of genetic resources and evolution, kunming institute of zoology, chinese academy of sciences, kunming 6502.3, china 2 laboratory for Conservation and Utilization of Bio-resource, Yunnan University, kunming 650091, china 3 Graduate University of chinese academy of sciences, Beijing 100049, china state key laboratory of genetic resources and evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650223 China laboratory for Conservation and Utilization of Bio-resource Yunnan University Kunming 650091 China Graduate University of chinese academy of sciences Beijing 100049 China

Mitochondrial disease currently received an increasing concern. However, the case-control design commonly adopted in this field is vulnerable to genetic background, population stratification and poor data quality. Although the phylogenetic analysis could help solve part of these problems, it has not received adequate attention. This paper is a review of this method as well as its application in mito- chondrial disease study.

关键词：线粒体疾病分析单元型种群分布

Molecular evolution of stress-response gene Leptin in high-altitude chinese snub-nosed monkeys (Rhinopithecus genus)

在线全文

学校读者我要写书评

暂无评论

chinese Science Bulletin 2010年第36期55卷 4132-4135页

作者： WANG XiaoPing1,2, JIN Wei1,2, YU Li1,2 & ZHANG YaPing1,2 1 laboratory for Conservation and Utilization of Bio-resource, Yunnan University, kunming 650091, china 2.state key laboratory of genetic resources and evolution, kunming institute of zoology, chinese academy of sciences, kunming 6502.3, china laboratory for Conservation and Utilization of Bio-resource Yunnan University Kunming 650091 China state key laboratory of genetic resources and evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650223 China

chinese snub-nosed monkeys (genus Rhinopithecus, subfamily Colobinae), including R. bieti, R. brelichi and R. roxellana, are well-known as the non-human primates with the highest known altitudinal distribution. They represent an interesting model organism of adaptation to the extreme environmental stresses. However, no study at the molecular level has yet been reported for the high-altitude adaptation in chinese snub-nosed monkeys. Leptin, as an adipocyte-derived hormone, is believed to play an important role in energy homeostasis in adaptation to high altitude environments. In the present study, we sequenced and compared leptin sequences of the chinese snub-nosed monkeys (R. bieti and R. roxellana) with their lowland close relative R. avunculus and other Colobines. Unexpectedly, no amino acid changes were observed in the 7 Colobinae species examined, including the 2 chinese snub-nosed monkeys, indicating no difference in the evolutionary pattern of the Leptin gene between high-altitude monkeys and their lowland counterparts. In contrast to a previous finding of adaptive evolution of Leptin gene in plateau pikas, our study suggests that this gene may not have an important role in high-altitude adaptation of chinese snub-nosed monkeys. Other nuclear genes associated with energy metabolism, or mitochondrial genes, are most likely to be involved the molecular mechanism underlying adaptation of these monkeys to cold and hypoxia associated with the highland environment.

关键词： Leptin基因金丝猴属瘦素基因压力反应分子进化高空鼻极端环境

The role of MC1R gene in buffalo coat color

在线全文

学校读者我要写书评

暂无评论

Science china(Life sciences) 2010年第2期53卷 267-272页

作者： MIAO YongWang1,2,WU GuiSheng3,WANG Lei2,LI DaLin4,TANG ShouKun5,LIANG JianPing2,MAO HuaMing2,LUO HuaiRong3 & ZHANG YaPing1,6 1 laboratory for Conservation and Utilization of Bio-resource,Yunnan University,kunming 650091,china 2 Faculty of Animal Science and Technology,Yunnan Agricultural University,kunming 650201,china 3 kunming institute of Botany,chinese academy of sciences,kunming 650204,china 4 Yunnan institute of Buffalo Science and Technology,kunming 650021,china 5 Animal Husbandry and Veterinary Station of Luxi city,Luxi 678400,china 6 state key laboratory of genetic resources and evolution,kunming institute of zoology,chinese academy of sciences,kunming 6502.3,china laboratory for Conservation and Utilization of Bio-resource Yunnan University Faculty of Animal Science and Technology Yunnan Agricultural University kunming institute of Botany Chinese Academy of Sciences

Melanocortin-1 receptor (MC1R) plays a major role in pigmentation in many *** investigate if the MC1R gene is associated with coat color in water buffalo,the coding region of MC1R gene of 216 buffalo samples was sequenced,which included 49 black river buffalo (Murrah and Nili-Ravi),136 swamp buffalo (Dehong,Diandongnan,Dechang,Guizhou,and Xilin) with white and gray body,and 31 hybrid offspring of river buffalo Nili-Ravi (or Murrah) and swamp *** the three variation sites found,SNP684 was synonymous,while SNP310 and SNP384 were nonsynonymous,leading to p.S104G and p.I128M changes,*** Individuals carrying homozygote EBR/EBR were *** genotype and phenotype analysis of the hybrid offspring of black river buffalo and gray swamp buffalo further revealed that the river buffalo type allele EBR or the allele carrying the amino acid p.104S was important for the full function of *** in silico functional analysis showed that the amino acid substitutions p.G104S and p.M128I had significant impact on the function of *** results indicate that the allele EBR or the allele carrying the amino acid p.104S was associated with the black coat color in buffalo.

关键词： Buffalo coat color MC1R

Diversity and evolution of MicroRNA gene clusters

在线全文

学校读者我要写书评

暂无评论

Science china(Life sciences) 2009年第3期52卷 261-266页

作者： ZHANG YanFeng,ZHANG Rui & SU Bing state key laboratory of genetic resources and evolution,kunming institute of zoology,chinese academy of sciences,kunming 6502.3,china state key laboratory of genetic resources and evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming 650223 China

microRNA(miRNA) gene clusters are a group of miRNA genes clustered within a proximal distance on a *** a large number of miRNA clusters have been uncovered in animal and plant genomes,the functional consequences of this arrangement are still poorly *** in a polycistron,the coexpressed miRNA clusters are pivotal in coordinately regulating multiple processes,including embryonic development,cell cycles and cell *** this review,based on recent progress,we discuss the genomic diversity of miRNA gene clusters,the coordination of expression and function of the clustered miRNAs,and the evolutionarily adaptive processes with gain and loss of the clustering miRNA genes mediated by duplication and transposition events.

关键词： microRNA gene clusters gene duplication adaptive evolution transposition

Advances in herpetological research emanating from china

在线全文

学校读者我要写书评

暂无评论

Zoological Research 2016年第1期37卷 4-6页

作者： Robert W.MURPHY the state key laboratory of genetic resources and evolution,kunming institute of zoology,chinese academy of sciences and the Centre for Biodiversity and Conservation Biology,Royal Ontario Museum state key laboratory of genetic resources and evolution Kunming Institute of Zoology Chinese Academy of Sciences Centre for Biodiversity and Conservation Biology Royal Ontario Museum. bob.murphy@utoronto.ca.

The warming of Earth owing to human activities is resulting in an episode of mass extinction. If global warming is not abated quickly, up to one-fourth of the species on our planet will face extinction in only 35 years. The loss of biodiversity is more than just many species disappearing. It could signal the beginning of the collapse of our ecosystems because the loss of one species can trigger a domino effect. Among vertebrates, the so-called cold bloodied species--fishes, amphibians and reptiles--are the most threatened groups.

关键词： Advances in herpetological research emanating from china

Partial AZFc duplications not deletions are associated with male infertility in the Yi population of Yunnan Province,china

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第9期14卷 807-815页

作者： Jun-jie YE Li MA Li-juan YANG Jin-huan WANG Yue-li WANG Hai GUO Ning GONG Wen-hui NIE Shu-hua ZHAO Yunnan key laboratory of Fertility Regulation and Minority Eugenics Yunnan Population and Family Planning Research Institute state key laboratory of genetic resources and evolution Kunming Institute of ZoologyChinese Academy of Sciences Department of Urology Kunming General Hospital of Chengdu Military Command Haiyuan College Kunming Medical University

Objective:There are many reports on associations between spermatogenesis and partial azoospermia factor c(AZFc) deletions as well as duplications;however,results are conflicting,possibly due to differences in methodology and ethnic *** purpose of this study is to investigate the association of AZFc polymorphisms and male infertility in the Yi ethnic population,residents within Yunnan Province,chinaMethods:A total of 224 infertile patients and 153 fertile subjects were selected in the Yi ethnic *** study was performed by sequence-tagged site plus/minus(STS+/) analysis followed by gene dosage and gene copy definition analysis.Y haplotypes of 215 cases and 115 controls were defined by 12 binary markers using single nucleotide polymorphism on Y chromosome(Y-SNP) multiplex assays based on single base primer extension ***:The distribution of Y haplotypes was not significantly different between the case and control *** frequencies of both gr/gr(7.6% vs.8.5%) and b2/b3(6.3% vs.8.5%) deletions do not show significant ***,single nucleotide variant(SNV) analysis shows no significant difference of gene copy definition between the cases and ***,the frequency of partial duplications in the infertile group(4.0%) is significantly higher than that in the control group(0.7%).Further,we found a case with sY1206 deletion which had two CDY1 copies but removed half of DAZ ***:Our results show that male infertility is associated with partial AZFc duplications,but neither gr/gr nor b2/b3 deletions,suggesting that partial AZFc duplications rather than deletions are risk factors for male infertility in chinese-Yi population.

关键词： Azoospermia factor c(AZFc) AZFc polymorphism b2/b3 gr/gr Infertility

Research progress in studies on the coalbed gas geochemistry

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2006年第3期16卷 215-220页

作者： TAO Mingxin (College of resources sciences & Technology, Beijing Normal University, Beijing 100875, china key laboratory of Gas Geochemistry, institute of Geology and Geophysics, chinese academy of sciences, Lanzhou 730000, china) College of resources sciences & Technology Beijing Normal University Beijing 100875 China key laboratory of Gas Geo- chemistry Institute of Geology and Geophysics Chinese Academy of Sciences Lanzhou 730000 China

The current situation of geochemical studies on coalbed gas is reviewed in this paper. Generally, coalbed gas is composi-tionally dominated by methane with δ13C1 values ranging approximately from - 80‰ to - 10‰. However, few isotopic studies have been carried out on other components of coalbed gas except for hydrogen and carbon dioxide, whose δDCH4 values available for utilization vary from - 333‰ to - 117‰, and δ13CCO2 values from - 29. 4‰ to + 18. 6‰. Two major types of coalbed gas, thermogenic gas and secondary biogenic gas, have been identified, and there are also some other classification criteria. Compared with conventional natural gases, coalbed gas has a wide distribution range of δ13C1 and δ13CCO2 values, especially possessing some extremely heavy values. Current problems that remain unsolved in the coalbed gas geochemistry include the variation mechanism, controlling factors and application of carbon and hydrogen isotopes of methane, the relation between the values of δ13C1 and Ro, the systematic classification scheme and criterion of genetic types, and the application of the coalbed gas geochemistry in evaluating target districts of the coalbed gas exploration.

关键词： coalbed gas geochemistry isotopic composition genetic type novel resource.

Low genetic diversity of symbiotic dinoflagellates(Symbiodinium) in scleractinian corals from tropical reefs in southern Hainan Island,china

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Systematics and evolution 2011年第6期49卷 598-605页

作者： 1,2 Guo-Wei ZHOU 1,2Hui HUANG 1(key laboratory of Marine Bio-resources Sustainable Utilization,South china Sea institute of Oceanology,chinese academy of sciences,Guangzhou 510301,china) 2(Tropical Marine Biological Research Station in Hainan,chinese academy of sciences,Sanya 572000,china) (key laboratory of Marine Bio-resources Sustainable Utilization South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China) (Tropical Marine Biological Research Station in Hainan Chinese Academy of Sciences Sanya 572000 China)

Endosymbiotic dinoflagellates in the genus Symbiodinium are among the most abundant and important group of photosynthetic protists found in coral reef *** order to further characterize this diversity and compare with other regions of the Pacific,samples from 44 species of scleractinian corals representing 20 genera and 9 families,were collected from tropical reefs in southern Hainan Island,*** gradient gel electrophoresis fingerprinting of the ribosomal internal transcribed spacer 2 identified 11 genetically distinct Symbiodinium types that have been reported *** majority of reef-building coral species(88.6%)harbored only one subcladal type of symbiont,dominated by host-generalist C1 and C3,and was influenced little by the host’s apparent mode of symbiont *** species harbored more than one clade of Symbiodinium(clades C,D)*** geographically isolated from the rest of the Pacific,the symbiont diversity in southern Hainan Island was relatively low and similar to both the Great Barrier Reef and Hawaii symbiont assemblages(dominated by clade C Symbiodinium).These results indicate that a specialist symbiont is not a prerequisite for existence in remote and isolated areas,but additional work in other geographic regions is necessary to test this idea.

关键词： coral dinoflagellate diversity South china Sea Symbiodinium.