| beta-globin gene evolution in the ruminants: evidence for an ancient origin of sheep haplotype b. | domestic sheep (ovis aries) can be divided into two groups with significantly different responses to hypoxic environments, determined by two allelic beta-globin haplotypes. haplotype a is very similar to the goat beta-globin locus, whereas haplotype b has a deletion spanning four globin genes, including beta-c globin, which encodes a globin with high oxygen affinity. we surveyed the beta-globin locus using resequencing data from 70 domestic sheep from 42 worldwide breeds and three ovis canadensi ... | 2015 | 26096044 |
| convergent evolution of socs4 between yak and tibetan antelope in response to high-altitude stress. | convergence often occurs when organisms with different ancestors adopt similar adaptations to environmental stresses. convergent (sometimes called parallel) evolution at the genetic level is now known to be more common than previously suspected. studying convergent evolution at the molecular level makes it possible to gain a better understanding of the common mechanisms deployed by different species. yak (bos grunniens) and tibetan antelope (pantholops hodgsonii), which are endemic to the qingha ... | 2015 | 26275942 |
| impacts of climate change on distributions and diversity of ungulates on the tibetan plateau. | climate change has significant impacts on species' distributions and diversity patterns. understanding range shifts and changes in richness gradients under climate change is crucial for conservation. the tibetan plateau, home to wild yak, chiru, and kiang, contains a biome with many endemic ungulates. it is highly sensitive to climate change and a region that merits particular attention with regard to the impacts of global climate change on its biomes. maximum entropy approaches were used to est ... | 2015 | 26255355 |
| expression profiling of abundant genes in pulmonary and cardiac muscle tissues of tibetan antelope (pantholops hodgsonii). | the tibetan antelope (ta), which has lived at high altitude for millions of years, was selected as the model species of high hypoxia-tolerant adaptation. here we constructed two cdna libraries from lung and cardiac muscle tissues, obtained est sequences from the libraries, and acquired extensive expression data related energy metabolism genes. comparative analyses of synonymous (ks) and nonsynonymous (ka) substitution rates of nucleus-encoded mitochondrial unigenes among different species reveal ... | 2013 | 23612247 |
| microscopic hair characteristics of a few bovid species listed under schedule-i of wildlife (protection) act 1972 of india. | dorsal guard hairs of 10 bovid species of india, listed under schedule-i of wildlife (protection) act 1972 of india and some of them quite frequently encountered in illegal trade, were studied using light microscopy. we discuss characteristics including colour, hair thickness, cuticular pattern, medulla pattern, medulla index, cross-section and scale count index for species characterisation/identification to deal wildlife offence cases. although some species could be identified very easily based ... | 2009 | 19457628 |
| cloning and sequence analysis of wild argali splunc1 cdna. | the complete coding sequence of wild argali splunc1 cdna was generated by rapid amplification of cdna ends. the splunc1 cdna was 1076 bp with an open reading frame of 768 bp, which encoded a 26.49 kda protein composed of 255 amino acids. its amino acid sequence shared 98.4%, 96.9%, 94.5%, 90.2%, 80.8 %, 78.4%, 78.3%, 72.5%, 72.3%, 68.8% identity with those of splunc1 cdna from ovis aries (accession no. np_001288334.1), capra hircus (accession no. xp_005688516.1), pantholops hodgsonii (accession ... | 2016 | 27620892 |
| genome-wide survey and analysis of microsatellite sequences in bovid species. | microsatellites or simple sequence repeats (ssrs) have become the most popular source of genetic markers, which are ubiquitously distributed in many eukaryotic and prokaryotic genomes. this is the first study examining and comparing ssrs in completely sequenced genomes of the bovidae. we analyzed and compared the number of ssrs, relative abundance, relative density, guanine-cytosine (gc) content and proportion of ssrs in six taxonomically different bovid species: bos taurus, bubalus bubalis, bos ... | 2015 | 26196922 |
| molecular cloning and characterization, and prokaryotic expression of the gnrh1 gene obtained from jinghai yellow chicken. | the gonadotropin-releasing hormone (gnrh) plays an important role in the control of reproductive functions. recent studies have reported the occurrence of gnrh molecular variants in numerous species. in this study, the gnrh1 gene from jinghai yellow chicken was cloned by reverse transcriptase-polymerase chain reaction and transformed into bl21 (de3) competent cells. the gnrh1 gene and amino acid sequences were subjected to bioinformatic analyses. the gnrh1 gene nucleotide sequence was discovered ... | 2015 | 25867433 |
| [genetic cloning and expression of hypoxia inducible factor 1 alpha in high altitude hypoxic adaptation species tibetan antelope (pantholops hodgsonii)]. | in order to investigate the role of the hypoxia inducible factor 1 alpha (hif-1α) in the adaptation mechanism to high altitude hypoxia, the cloning of the hif-1α gene cdna of tibetan antelope (pantholops hodgsonii), using rt-pcr and race, was applied, and the comparative analysis of the tissue-specific expressions of hif-1α among tibetan antelope, tibetan sheep and plain sheep was performed using real-time pcr and western blot. the sequence analysis indicated that the cdna sequences acquired by ... | 2011 | 22193452 |
| group size effects on foraging and vigilance in migratory tibetan antelope. | large group sizes have been hypothesized to decrease predation risk and increase food competition. we investigated group size effects on vigilance and foraging behaviour during the migratory period in female tibetan antelope pantholops hodgsoni, in the kekexili nature reserve of qinghai province, china. during june to august, adult female antelope and yearling females gather in large migratory groups and cross the qinghai-tibet highway to calving grounds within the nature reserve and return to q ... | 2007 | 17582704 |
| molecular cloning of hemoglobin alpha-chain gene from pantholops hodgsonii, a hypoxic tolerance species. | to investigate the possible mechanisms of high-altitude native animals in adapting to high altitude, we cloned hemoglobin alpha-chain (alpha-chain hb) gene from pantholops hodgsonii, an animal species that indigenously lives at elevations of 3700-5500 m on the qinghai-tibetan plateau. using reverse transcription polymerase chain reaction (rt-pcr) technique, the alpha-chain hb gene was amplified from total rna in the liver of the pantholops hodgsonii. ta cloning technique was used and the pcr pro ... | 2007 | 17562295 |
| a mitochondrial genome sequence of the tibetan antelope (pantholops hodgsonii). | to investigate genetic mechanisms of high altitude adaptations of native mammals on the tibetan plateau, we compared mitochondrial sequences of the endangered pantholops hodgsonii with its lowland distant relatives ovis aries and capra hircus, as well as other mammals. the complete mitochondrial genome of p. hodgsonii (16,498 bp) revealed a similar gene order as of other mammals. because of tandem duplications, the control region of p. hodgsonii mitochondrial genome is shorter than those of o. a ... | 2005 | 16144518 |
| [pharmacognostical identification of antelope horn(cornu saigae tataricae) and its adulterants]. | to provide appropriate information and scientific basis for identifying antelope horn (saiga tatarica) contained in traditional chinese patent medicines, and formulate relevant quality criteria through experiments. | 2000 | 12512419 |
| identification of ungulates used in a traditional chinese medicine with dna barcoding technology. | horns of saiga antelope (saiga tatarica) have always been an ingredient of "lingyangjiao", a traditional chinese medicine (tcm). persistent hunting for saiga antelope has already threatened the survival of critical endangered populations in wild. to control the growing pressure, cites and chinese government have legislated for monitoring the trade of saiga horns. however, similar ungulate horns are difficult to identify by their morphological characteristics, which has impeded the law enforcemen ... | 2015 | 26140198 |
| complete genome sequence of mycoplasma capricolum subsp. capripneumoniae strain zly1309f, isolated from endangered tibetan antelope. | mycoplasma capricolum subsp. capripneumoniae is an important pathogen of goats that causes contagious caprine pleuropneumonia. here, we report the complete genome sequence of m. capricolum subsp. capripneumoniae strain zly1309f, isolated from a tibetan antelope (pantholops hodgsonii) in china. | 2017 | 28729256 |
| genetic diversity of the tibetan antelope (pantholops hodgsonii) population of ladakh, india, its relationship with other populations and conservation implications. | the tibetan antelope (pantholops hodgsonii), or chiru, is an endangered antelope, distributed in china [xinjiang, xizang, qinghai, zhuolaihu lake (breeding habitat)], and india (aksai chin and ladakh). there is a global demand for the species prized wool, which is used in weaving shahtoosh shawls. over the years, the population of the tibetan antelope has drastically declined from more than a million to a few thousand individuals, mainly due to poaching. field studies undertaken in ladakh, india ... | 2016 | 27769305 |
| [neurological adaptations to hypoxia in tibetan antelope (pantholops hodgsonii) with a view of molecular biology of respiratory globin-neuroglobin]. | neuroglobin (ngb) is a respiratory protein that is preferentially expressed in brain of mouse and man. in this article, tibetan antelope, living at altitude of 3 000-5 000 m for millions of years, was selected as the model of hypoxia-tolerant adaptation species. using reverse transcription polymerase chain reaction (rt-pcr) and western blot techniques, expression of ngb gene was amplified and analyzed in antelope brain tissue. our results showed that ngb homology protein in tibetan antelope was ... | 2012 | 23581185 |
| molecular cloning, characterization and expression of myoglobin in tibetan antelope (pantholops hodgsonii), a species with hypoxic tolerance. | the tibetan antelope (pantholops hodgsonii) is a hypoxia-tolerant species that lives at an altitude of 4,000-5,000 m above sea level on the qinghai-tibetan plateau. myoglobin is an oxygen-binding cytoplasmic hemoprotein that is abundantly expressed in oxidative skeletal and cardiac myocytes. numerous studies have implicated that hypoxia regulates myoglobin expression to allow adaptation to conditions of hypoxic stress. few studies have yet looked at the effect of myoglobin on the adaptation to s ... | 2014 | 24076356 |
| cardiac adaptive mechanisms of tibetan antelope (pantholops hodgsonii) at high altitudes. | to identify cardiac mechanisms that contribute to adaptation to high altitudes in tibetan antelope (pantholops hodgsonii). | 2012 | 22620694 |
| globalization of the cashmere market and the decline of large mammals in central asia. | as drivers of terrestrial ecosystems, humans have replaced large carnivores in most areas, and human influence not only exerts striking ecological pressures on biodiversity at local scales but also has indirect effects in distant corners of the world. we suggest that the multibillion dollar cashmere industry creates economic motivations that link western fashion preferences for cashmere to land use in central asia. this penchant for stylish clothing, in turn, encourages herders to increase lives ... | 2013 | 23866036 |
| reference-assisted chromosome assembly. | one of the most difficult problems in modern genomics is the assembly of full-length chromosomes using next generation sequencing (ngs) data. to address this problem, we developed "reference-assisted chromosome assembly" (raca), an algorithm to reliably order and orient sequence scaffolds generated by ngs and assemblers into longer chromosomal fragments using comparative genome information and paired-end reads. evaluation of results using simulated and real genome assemblies indicates that our a ... | 2013 | 23307812 |
| phylogenetic analysis and positive-selection site detecting of vascular endothelial growth factor family in vertebrates. | vascular endothelial growth factor (vegf), known to play an important role in vascular homeostasis, vascular integrity and angiogenesis, is little known about the evolutionary relationship of its five members especially the role of gene duplication and natural selection in the evolution of the vegf family. in this study, seventy-five full-length cdna sequences from 33 vertebrate species were extracted from the ncbi's genbank, uniprot protein database and the ensembl database. by phylogenetic ana ... | 2014 | 24200960 |
| no lanthanides-based catalysis in eukaryotes. | in the "hypothesis" paper entitled "lanthanides-based catalysis in eukaryotes" (iubmb life 2018 nov;70(11):1067-1075), we analyzed the possibility that ce3+ -dependent methanol dehydrogenases (mdhs) could be found not only in archaea and bacteria but also in eukaryotic organisms. this hypothesis was based on the observation that mdhs protein sequences carrying the signature of ce3+ -based active sites could be found in genome-derived proteomes of the eukaryotes plasmodium yoelii yoelii, nephila ... | 2019 | 30548956 |
| gut microbiota adaptation to high altitude in indigenous animals. | limited is known about role of gut microbiota in the metabolism of high-altitude-living herbivores, and potential co-evolution between gut microbiome and host genome during high altitude adaptation were not fully understood. here, dna from faecal samples was used to investigate the gut microbial compositions and diversity in three host species endemic to the high-altitude tibetan plateau, the tibetan antelope (pantholops hodgsonii, t-antelope, 4300 m) and the tibetan wild ass (equus kiang, t-ass ... | 2019 | 31196622 |
| morphology, genetic characterization and molecular phylogeny of pinworm skrjabinema longicaudatum n. sp. (oxyurida: oxyuridae) from the endangered tibetan antelope pantholops hodgsonii (abel) (artiodactyla: bovidae). | the tibetan antelope pantholops hodgsonii (abel) (artiodactyla: bovidae) is an endangered species of mammal endemic to the qinghai-tibetan plateau. parasites and parasitic diseases are considered to be important threats in the conservation of the tibetan antelope. however, our present knowledge of the composition of the parasites of the tibetan antelope remains limited. | 2020 | 33176841 |
| georgenia faecalis sp. nov. isolated from the faeces of tibetan antelope. | two aerobic, gram-stain-positive, non-motile, non-sporulating coccoid strains, designated zlj0423t and zlj0321, were isolated from the faeces of tibetan antelope (pantholops hodgsonii). their optimal temperature, nacl concentration and ph for growth were 28°c, 0.5% (w/v) nacl and ph 7.5, respectively. phylogenetic analysis based on 16s rrna gene sequences revealed that strains zlj0423t and zlj0321 were very similar to each other (99.8%) and had a sequence similarity of 97.0% with georgenia satya ... | 2020 | 32710298 |
| aeromicrobium chenweiae sp. nov. and aeromicrobium yanjiei sp. nov., isolated from tibetan antelope (pantholops hodgsonii) and plateau pika (ochotona curzoniae), respectively. | four novel strains (592t, s592, mf47t and smf47) were isolated from tibetan antelopes (pantholops hodgsonii) and plateau pikas (ochotona curzoniae), respectively. the cells were aerobic, non-motile, gram-stain- and catalase-positive, rod-shaped bacteria. the 16s rrna gene sequences of the four strains showed highest similarities to aeromicrobium fastidiosum dsm 10552t (98.1, 98.6, 98.7 and 98.7 %, respectively), and the phylogenetic analyses based on 16s rrna gene and genomic sequences indicated ... | 2020 | 32692642 |
| cellulomonas shaoxiangyii sp. nov., isolated from faeces of tibetan antelope (pantholops hodgsonii) on the qinghai-tibet plateau. | two gram-stain-positive, catalase-positive and oxidase-negative, aerobic, non-motile, cellobiose-utilizing, short-rod-shaped strains (z28t and z29) were isolated from faeces of tibetan antelope (pantholops hodgsonii) collected on the qinghai-tibet plateau. strain z28t shared 98.1, 98.0, 97.8 and 97.4 % 16s rrna gene similarity, 24.1, 22.8, 23.2 and 26.3 % digital dna-dna hybridization relatedness and 80.8, 80.0, 80.7 and 80.9 % average nucleotide identity values with cellulomonas oligotrophica d ... | 2020 | 32038002 |
| [food habits and hunting patterns of tibetan brown bear during warm seasons in kekexili region on qinghai-tibetan plateau]. | tibetan brown bear (ursus arctos pruinosus) is an endemic subspecies of brown bear on the qinghai-tibetan plateau. we once reported a preliminary study on the summer food habit of tibetan brown bear from july to august, 2005 in the kekexili (hoh xil).. however, the hunting modes of the tibetan brawn bear have not been reported. from july to august, 2009, we collected additional data on food habits and hunting patterns of tibetan brown bear in the kekexili region. we found tibetan brown bears are ... | 2010 | 21174359 |
| prevalence and parasite composition of gastrointestinal parasites in the endangered tibetan antelope (pantholops hodgsonii) from the calving ground of hoh xil nature world heritage site, qinghai, china. | our objective was to provide baseline information on the gastrointestinal parasites of the female tibetan antelope (pantholops hodgsonii) on its calving ground at the zhuonai lake region, in the hoh xil nature world heritage site, qinghai, china. on 3 july 2018, 238 freshly deposited fecal samples were collected from the calving grounds and analyzed by flotation technique to recover eggs, oocysts, and nematode larvae. all fecal samples demonstrated the presence of gastrointestinal parasites: 93% ... | 2020 | 31750770 |
| paracoccus liaowanqingii sp. nov., isolated from tibetan antelope (pantholops hodgsonii). | two strains, designated 2251t and 3058, that were aerobic, gram-stain-negative, non-motile, coccoid or short rod-shaped bacilli, have recently been isolated from tibetan antelopes on the qinghai-tibet plateau. the results of phylogenetic analyses of 16s rrna gene sequences indicated that strains 2251t and 3058 represent a new species within the genus paracoccus and are most similar to 'paracoccus gahaiensis' cug00006t (98.9 and 99.3 %), paracoccus nototheniae i-41r45t (98.3 and 98.7 %) and parac ... | 2020 | 31674893 |
| dna profiling of shahtoosh. | the population of the tibetan antelope (pantholops hodgsonii) has recently declined dramatically due to the illegal trade in its wool. the animal lives at high altitude and is protected from the extremely cold climate due to a coat of very fine wool. these hairs are highly sought for weaving a shawl called shahtoosh. the large-scale poaching of the antelope has resulted in the species being placed on cites appendix i. we report on a method of dna profiling on a confiscated shahtoosh using the cy ... | 2006 | 16888711 |
| characterization of glod4 in leydig cells of tibetan sheep during different stages of maturity. | we have previously reported that glyoxalase domain-containing protein 4 (glod4) is expressed in sheep testes by proteome analysis, but its roles during testicular development remain unclear. the aim of this study was to understand the expression characteristics and biological functions of the glod4 gene in developmental tibetan sheep testes. the cdna sequence of the tibetan sheep glod4 gene was cloned by the rt-pcr method, and the structural characteristics of the glod4 protein were analyzed usi ... | 2019 | 31614839 |
| actinomyces lilanjuaniae sp. nov., isolated from the faeces of tibetan antelope (pantholops hodgsonii) on the qinghai-tibet plateau. | two novel, gram-stain-positive, non-motile, facultatively anaerobic, rod-shaped bacteria (strains 2129t and 2119) were isolated from the faeces of tibetan antelopes (pantholops hodgsonii) on the qinghai-tibet plateau, pr china. the 16s rrna gene sequences of the strains showed highest similarity values to actinomyces timonensis dsm 23838t (92.9 and 92.8 %, respectively), and phylogenetic analysis based on 16s rrna gene and genomic sequences indicated that strains 2129t and 2119 represent a new l ... | 2019 | 31460856 |
| fudania jinshanensis gen. nov., sp. nov., isolated from faeces of the tibetan antelope (pantholops hodgsonii) in china. | two hitherto unknown bacteria (strains 313t and 352) were recovered from the faeces of tibetan antelopes on the tibet-qinghai plateau, pr china. cells were rod-shaped and gram-stain-positive. the optimal growth conditions were at 37 °c and ph 7. the isolates were closely related to actinotignum sanguinis (92.6 % 16s rrna gene sequence similarity), arcanobacterium haemolyticum (92.5 %), actinotignum schaalii (92.4 %), actinobaculum massiliense (92.2 %) and flaviflexus huanghaiensis (91.6 %). phyl ... | 2019 | 31334694 |
| streptococcuspantholopis sp. nov., isolated from faeces of the tibetan antelope (pantholops hodgsonii). | two bacterial strains were isolated from faecal samples of tibetan antelopes. the isolates were gram-stain-positive, catalase-negative, coccus-shaped organisms that were tentatively identified as representing a novel streptococcal species based on their morphological features, biochemical test results and phylogenomic findings. comparative 16s rrna gene sequencing studies confirmed that the organisms were members of the genus streptococcus, but they did not correspond to any recognized species o ... | 2016 | 27226124 |
| roseomonas wenyumeiae sp. nov., isolated from faeces of tibetan antelopes (pantholops hodgsonii) on the qinghai-tibet plateau. | two gram-stain-negative, catalase- and oxidase-positive, non-spore-forming, aerobic, motile, flagellated, and coccus-shaped strains (z23t and z24) were isolated from faeces of tibetan antelopes (pantholops hodgsonii) on the qinghai-tibet plateau, pr china. results of the morphological, biochemical, and phylogenetic studies indicated that they were similar to each other, but distinct from existing species of the genus roseomonas. the proposed type strain, z23t, had 97.8, 97.1 and 96.8 % 16s rrna ... | 2019 | 31145678 |
| five new species of eimeria schneider, 1875 from the endangered tibetan antelope pantholops hodgsonii (abel) (artiodactyla: bovidae: caprinae) in the hoh xil nature reserve area of qinghai province, china. | we examined faeces of 76 endangered tibetan antelopes pantholops hodgsonii (abel) in may 2017, from the hoh xil nature reserve, qinghai province, china, and found 62/76 (82%) discharging oöcysts representing five new species of eimeria schneider, 1875. oöcysts of eimeria pantholopensis n. sp., found in 54/76 (71%) chiru, are subspheroidal/ellipsoidal, 15-22 × 12-19 (18.6 × 16.1) µm, with a length/width (l/w) ratio of 1.0-1.3 (1.2); micropyle cap and 1-3 polar granules are present, but oöcyst res ... | 2019 | 30903446 |
| [trophic niches of pantholops hodgsoni, procapra picticaudata and equus kiang in kekexili region]. | interspecies competition is the main factor determining the trophic niche width of sympatric species on both ecological and evolutionary levels. in august 2004, a microscopic analysis of feces was made to analyze the diet compositions of pantholops hodgsoni, procapra picticaudata and equus kiang under free-living circumstances between chuma river and wudaoliang in the kekexili national nature reserve. the trophic niche widths and overlaps of these herbivorous ungulates were calculated based on t ... | 2007 | 17615869 |
| mycetocola zhujimingii sp. nov., isolated from faeces of tibetan antelopes (pantholops hodgsonii). | strains 449t and 622 are both aerobic, gram-stain-positive, short, rod-shaped bacilli that were recently isolated from the faeces of tibetan antelopes on the qinghai-tibet plateau in china. their 16s rrna gene sequences were most similar to those of mycetocola zhadangensis zd1-4t(97.9-98.0 %) and mycetocola miduiensis cgmcc 1.11101t(97.3-97.4 %). phylogenetic analysis of the 16s rrna gene sequences further suggested that strains 449t and 622 represent a new lineage within the genus mycetocola. t ... | 2019 | 30762515 |
| salinibacterium hongtaonis sp. nov., isolated from faeces of tibetan antelope (pantholops hodgsonii) on the qinghai-tibet plateau. | two novel aerobic, gram-staining-positive and non-spore-forming bacterial strains, 194t and s1194, were isolated from faeces of tibetan antelopes sampled at the qinghai-tibet plateau of china. the strains were able to grow in medium up to 10 % nacl, similar to the nacl-resistant property of the genus salinibacterium members. the 16s rrna gene sequences of the strains showed the highest similarity to salinibacterium xinjiangense(98.1-98.2 %), and phylogenetic analysis based on 16s rrna gene seque ... | 2019 | 30747615 |
| railway underpass location affects migration distance in tibetan antelope (pantholops hodgsonii). | wildlife crossings are designed to mitigate barrier effects of transportation infrastructure on wildlife movement. most efforts in evaluating crossing efficiency focus on counting animal use. however, crossings placed at suboptimal locations may alter animals' natural movement pattern and decrease population fitness, which cannot be reflected solely by counts of animal use. the long-distance migration of tibetan antelope (pantholops hodgsonii) is directly affected by the qinghai-tibet railway (q ... | 2019 | 30716135 |
| puppet resting behavior in the tibetan antelope (pantholops hodgsonii). | rest contributes a large part of animals' daily life, and animals usually rest in two ways, standing or in recumbence. small or medium sized ungulates bed to rest in most cases, and standing rest is very rare and hardly seen. here we described a standing rest behavior of tibetan antelopes (pantholops hodgsonii) living on the tibet plateau which has not been reported before. we named the standing rest behavior puppet behavior, since the antelope stand still for a certain time. of the 304 individu ... | 2018 | 30589844 |
| more than one way to be an herbivore: convergent evolution of herbivory using different digestive strategies in prickleback fishes (stichaeidae). | in fishes, the evolution of herbivory has occured within a spectrum of digestive strategies, with two extremes on opposite ends: (i) a rate-maximization strategy characterized by high intake, rapid throughput of food through the gut, and little reliance on microbial digestion or (ii) a yield-maximization strategy characterized by measured intake, slower transit of food through the gut, and more of a reliance on microbial digestion in the hindgut. one of these strategies tends to be favored withi ... | 2015 | 25769813 |
| the roles of calving migration and climate change in the formation of the weak genetic structure in the tibetan antelope (pantholops hodgsonii). | geographical barriers and distance can reduce gene exchange among animals, resulting in genetic divergence of geographically isolated populations. the tibetan antelope (pantholops hodgsonii) has a geographical range of approximately 1600 km across the qinghai-tibet plateau, which comprises a series of tall mountains and big rivers. however, previous studies indicate that there is little genetic differentiation among their geographically delineated populations. to better understand the genetic st ... | 2019 | 29851262 |
| microsatellite loci analysis reveals post-bottleneck recovery of genetic diversity in the tibetan antelope. | the tibetan antelope (chiru, pantholops hodgsoni) is one of the most endangered mammals native to the qinghai-tibetan plateau. the population size has rapidly declined over the last century due to illegal hunting and habitat damage. in the past 10 years, the population has reportedly been expanding due to conservation efforts. several lines of evidence suggest that the tibetan antelope has undergone a demographic bottleneck. however, the consequences of the bottleneck on genetic diversity and th ... | 2016 | 27739522 |
| evolution of ontogenetic dietary shifts and associated gut features in prickleback fishes (teleostei: stichaeidae). | we tested the hypothesis that an ontogenetic dietary shift from carnivory to herbivory or omnivory, and concomitant changes in the gut facilitating digestion of algae, are synapomorphies of the tribes xiphisterini and esselenichthyini in the family stichaeidae (pricklebacks). previous investigations have revealed that two xiphisterine pricklebacks-xiphister mucosus and xiphister atropurpureus-become herbivorous or omnivorous, respectively, as their bodies grow larger, and that their guts show re ... | 2014 | 24269211 |
| morphological and genetic variation along a north-to-south transect in stipa purpurea, a dominant grass on the qinghai-tibetan plateau: implications for response to climate change. | estimating the potential of species to cope with rapid environmental climatic modifications is of vital importance for determining their future viability and conservation. the variation between existing populations along a climatic gradient may predict how a species will respond to future climate change. stipa purpurea is a dominant grass species in the alpine steppe and meadow of the qinghai-tibetan plateau (qtp). ecological niche modelling was applied to s. purpurea, and its distribution was f ... | 2016 | 27580056 |
| [identification and conservation assessment of suitable habitats for tibetan antelope in the alpine desert, qinghai-tibet plateau]. | as a flagship and one of most endangered ungulates in the alpine desert of qinghai-tibet plateau, the habitat conservation of tibetan antelope (pantholops hodgsonii) is vital to sustain its long-term population existence. in consideration of key habitat factors of the tibetan antelope (i.e., food, topography and water source) as well as human interference factors like roads and settlements, the habitat suitability was modeled, and potential and valid suitable habitats were identified for tibetan ... | 2014 | 25876398 |
| a novel method for identifying shahtoosh. | shahtoosh, the down hair of the tibetan antelope (pantholops hodgsonii), is the noblest and most expensive wool in the world. the population of the animal has declined dramatically due to commercial poaching for the fiber. traditional inspection for detection of shahtoosh has been performed by microscopic analysis. we developed a taqman real-time pcr-based dna analysis method for identifying shahtoosh fibers. a set of probe and primers for the mitochondrial 12s ribosomal rna gene that binds spec ... | 2014 | 24502476 |
| recent geological events and intrinsic behavior influence the population genetic structure of the chiru and tibetan gazelle on the tibetan plateau. | the extent to which a species responds to environmental changes is mediated not only by extrinsic processes such as time and space, but also by species-specific ecology. the qinghai-tibetan plateau uplifted approximately 3000 m and experienced at least four major glaciations during the pleistocene epoch in the quaternary period. consequently, the area experienced concurrent changes in geomorphological structure and climate. two species, the tibetan antelope (pantholops hodgsonii, chiru) and tibe ... | 2013 | 23637761 |
| [adaptation of vigilance behavior in ex situ conservation of tibetan antelope]. | tibetan antelope (pantholops hodgsoni) are an endemic and endangered species of the tibetan plateau. ex situ conservation may represent an important way to protect tibetan antelope; however, this process may influence aspects of their behavior. to investigate the ability of these antelopes to adapt to new environments, a study on the vigilance behavior of captive antelope in different seasons was conducted. using instantaneous scan sampling, focal animal sampling, and all-occurrence recording me ... | 2011 | 22006811 |
| genetic diversity of microsatellite dna loci of tibetan antelope (chiru, pantholops hodgsonii) in hoh xil national nature reserve, qinghai, china. | the tibetan antelope (pantholops hodgsonii), indigenous to china, became an endangered species because of considerable reduction both in number and distribution during the 20th century. presently, it is listed as an appendix i species by cites and as category i by the key protected wildlife list of china. understanding the genetic diversity and population structure of the tibetan antelope is significant for the development of effective conservation plans that will ensure the recovery and future ... | 2007 | 17643945 |
| actinomyces qiguomingii sp. nov., isolated from the pantholops hodgsonii. | two previously undescribed, gram-stain-positive, rod-shaped strains, 410t and 553, were isolated from faeces of the tibetan antelope (pantholops hodgsonii) from the tibet-qinghai plateau, pr china. the optimum growth conditions of the two novel strains were 1 % (w/v) nacl, 37 °c and ph 7. the end products from glucose fermentation included ethanol and lactic acid. based on results of 16s rrna gene sequence comparison and phylogenetic and phylogenomic analyses, strains 410t and 553 were classifie ... | 2020 | 31613742 |
| assessment of databases to determine the validity of β- and γ-carbonic anhydrase sequences from vertebrates. | the inaccuracy of dna sequence data is becoming a serious problem, as the amount of molecular data is multiplying rapidly and expectations are high for big data to revolutionize life sciences and health care. in this study, we investigated the accuracy of dna sequence data from commonly used databases using carbonic anhydrase (ca) gene sequences as generic targets. cas are ancient metalloenzymes that are present in all unicellular and multicellular living organisms. among the eight distinct fami ... | 2020 | 32393172 |
| lanthanides-based catalysis in eukaryotes. | rare earth elements play a pivotal role in high-technology devices, are used as contrast agents for magnetic resonance imaging in clinical settings, are explored as drug carriers for tumor photodynamic therapy, and are used as fertilizers. from the biochemical viewpoint, they act not only as antagonists of ca2+ but have been proposed as alternative to ca2+ in metallo-enzymes, in particular in ce3+ -based methanol dehydrogenases (mdhs). up to now, the analysis of protein sequence databases identi ... | 2018 | 30253038 |
| draft genome sequence of the tibetan antelope. | the tibetan antelope (pantholops hodgsonii) is endemic to the extremely inhospitable high-altitude environment of the qinghai-tibetan plateau, a region that has a low partial pressure of oxygen and high ultraviolet radiation. here we generate a draft genome of this artiodactyl and use it to detect the potential genetic bases of highland adaptation. compared with other plain-dwelling mammals, the genome of the tibetan antelope shows signals of adaptive evolution and gene-family expansion in genes ... | 2013 | 23673643 |