Comparative phylogeography of two sister species of snowcock: impacts of species-specific altitude p

来源 :鸟类学研究(英文版) | 被引量 : 0次 | 上传用户:chenjiechn
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Background: Phylogeographical patts and population dynamics are usually interpreted by environmental disturbances and geographic barriers of the past. However, sister species may exhibit disparate patts of genetic structures and population dynamics due to their habitat preference and altitude segregation. In this study, we tested how species-specific altitude habitat affected phylogeographical patts in two sister snowcock species, Tibetan (Tetraogallus tibetanus) and Himalayan Snowcocks (T. himalayensis). Methods: A panel of seven microsatellite loci and a fragment of Mitochondrial DNA Control Region were used to investigate genetic structures and population dynamics in hope of revealing the underlying evolutionary processes through the identification of possible past demographic events. Results: Our results suggest that T. himalayensis showed a significant phylogeographical signal in mtDNA (FST = 0.66, p < 0.001) and microsatellite (FST = 0.11, p < 0.001) data and is stable during the glacial-interglacial cycles in the Pleistocene and followed demographic contraction until 0.003 million years (Mys) ago. The phylogeographical signal of T. tibetanus is lower than the level of genetic difference among populations in mtDNA (FST = 0.41, p < 0.001) and microsatellite (FST = 0.09, p < 0.001) data, likely benefiting from stable habitats over a long period of time. T. tibetanus has been experiencing expansion since 0.09 Mys ago. However, an abnormally haplotype H9 from T. himalayensis clustering with T. tibetanus was spotted. Conclusion: Our results indicate that differences in habitat preference and altitude specialities were reflected in the genetic structure patts and population dynamics of these two species. These dissimilarities in life history traits might have affected the dispersal and survival abilities of these two species differently during environmental fluctua-tions. The results of this study also enriched our knowledge on population differentiation and connectivity in high altitude mountain ecosystems.
其他文献
目的:探讨绝经后妇女高级别宫颈上皮内瘤变行宫颈环形电切术(LEEP)诊治的临床价值.方法:选择2017年2月—2018年12月于北京妇产医院妇科微创中心因宫颈高级别鳞状上皮内病变(H
子痫前期是一种累及全身多脏器的妊娠期特发性疾病,是导致孕产妇及围生儿死亡的主要原因.发病机制包括过度氧化应激、炎症免疫过度激活、内皮细胞功能障碍等,其中中性粒细胞
子痫前期(PE)是引起全球孕产妇及新生儿发病率和死亡率升高的妊娠特发性疾病.目前其病因尚未完全明确,单一生物标志物也很难预测其变化.PE患者经积极治疗病情无好转或进行性
Background: The majority of European Common Ts (Sta hirundo) migrate south along the west coast of Europe and Africa, while birds from east regions are known to
多囊卵巢综合征(PCOS)是育龄期妇女常见的生殖障碍及代谢功能紊乱性疾病,常伴有肥胖、胰岛素抵抗、雄激素过多和血脂异常等代谢异常,PCOS代谢紊乱比单纯的生殖障碍更复杂.鸢
盆腔器官脱垂(POP)属于盆底功能障碍性疾病(PFD)的一种,是中老年妇女的常见病,虽对患者生命尚不构成威胁,但是其从多方面影响患者的生活质量及心理健康.POP的治疗方式可分为
Background: The alteration and loss of habitats are two of the main threats that biodiversity conservation is cur-rently facing up to. The present study describ
Background: Vast areas of lowland neotropical forest have regenerated after initially being cleared for agricultural purposes. The ecological value of regenerat
为了改善半导体激光器的散热性能,在C-mount封装的基础上添加了高热导率碳化硅(silicon carbide,SiC)材料作为过渡热沉.通过有限元分析的方式获得最优SiC结构参数:厚度为0.4
期刊