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杨婧, 朱国芬, 蒋健, 向昌林, 高福利, 鲍伟东. 2019: 非损伤遗传结构分析显示易危物种中华斑羚种群之间的连通性偏低:关注隔离种群的保护
. 动物学研究, 40(5): 439-448. DOI: 10.24272/j.issn.2095-8137.2019.058
引用本文: 杨婧, 朱国芬, 蒋健, 向昌林, 高福利, 鲍伟东. 2019: 非损伤遗传结构分析显示易危物种中华斑羚种群之间的连通性偏低:关注隔离种群的保护
. 动物学研究, 40(5): 439-448. DOI: 10.24272/j.issn.2095-8137.2019.058
Jing Yang, Guo-Fen Zhu, Jian Jiang, Chang-Lin Xiang, Fu-Li Gao, Wei-Dong Bao. 2019. Non-invasive genetic analysis indicates low population connectivity in vulnerable Chinese gorals: concerns for segregated population management. Zoological Research, 40(5): 439-448. DOI: 10.24272/j.issn.2095-8137.2019.058
Citation: Jing Yang, Guo-Fen Zhu, Jian Jiang, Chang-Lin Xiang, Fu-Li Gao, Wei-Dong Bao. 2019. Non-invasive genetic analysis indicates low population connectivity in vulnerable Chinese gorals: concerns for segregated population management. Zoological Research, 40(5): 439-448. DOI: 10.24272/j.issn.2095-8137.2019.058

非损伤遗传结构分析显示易危物种中华斑羚种群之间的连通性偏低:关注隔离种群的保护

Non-invasive genetic analysis indicates low population connectivity in vulnerable Chinese gorals: concerns for segregated population management

  • 摘要: 详细了解野生动物种群数量和遗传结构信息,对于制定有效的管理对策至关重要,尤其是对于那些受到人为干扰种群处于下降和隔离状态的珍稀物种更加重要。本文借助非损伤采集粪样、线粒体与核DNA检测等分子标记技术,对来自北京和内蒙古的中华斑羚(Naemorhedus griseus)进行了种群结构比较与监测研究。结果发现,307份粪样被确认为中华斑羚遗留,其中鉴定出北京种群有15只个体(9 雌6雄)、内蒙古种群为61 只个体(37雌24雄)。在这76只个体线粒体DNA中,检测出8种单倍型、13个核苷酸多态性位点、45个微卫星等位基因。北京和内蒙古种群具有显著不同的遗传结构分化特点,但两地种群均趋向于偏雌性的性别比例,预示着较高的繁殖潜力,对于呈现片段化分布的中华斑羚恢复与保护具有重要意义。据此,我们建议对这两个具有丰富遗传多样性的种群作为进化显著单元实施保护,促进现有种群恢复,并考虑在不同种群之间交流个体,以确保中华斑羚种群长期繁盛。

     

    Abstract: Detailed information on the size and genetic structure of wildlife populations is critical for developing effective conservation strategies, especially for those species that have suffered population decline and fragmentation due to anthropogenic activities. In the present study, we used a non-invasive approach combining fecal pellet sampling with mitochondrial DNA and nuclear DNA microsatellite marker analysis to monitor and compare the population structure of the Chinese goral (Naemorhedus griseus) in Beijing and northeast Inner Mongolia in China. Of the 307 fecal samples confirmed to be from N. griseus, 15 individuals (nine females and six males) were found in the Beijing population and 61 individuals (37 females and 24 males) were found in the Inner Mongolian population. Among these 76 individuals, we identified eight haplotypes and 13 nucleotide polymorphic sites from mtDNA and 45 alleles from 10 microsatellite loci. Spatially structured genetic variation and a significant level of genetic differentiation were observed between the two populations. In both populations, the sex ratios were skewed toward females, indicating high reproductive potential, which is crucial for population recovery and conservation of this patchily distributed vulnerable species. We suggest that managing the two populations as evolutionarily significant units with diverse genetic backgrounds could be an effective solution for present population recovery, with the possible relocation of individuals among different groups to help ensure future goral species prosperity.

     

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