Low genetic diversity and strong population structure shaped by anthropogenic habitat fragmentation in a critically endangered primate, Trachypithecus leucocephalus
Low genetic diversity and strong population structure shaped by anthropogenic habitat fragmentation in a critically endangered primate, Trachypithecus leucocephalus
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极度濒危灵长类白头猿的遗传多样性较低，种群结构因人为栖息地破碎化而形成
DOI：
10.1038/hdy.2017.2
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发表时间：
2017-02
期刊：
影响因子：
3.8
通讯作者：
Meng Yao
中科院分区：
文献类型：
--
作者：
Weiran Wang;Yu Qiao;Sheng Li;Wenshi Pan;Meng Yao
栖息地破碎化可能会强烈影响种群遗传结构，降低遗传多样性和小型和孤立种群的生存能力。白头叶猴（Trachypithecus leucocephalus）是一种极度濒危的灵长类动物，生活在中国南方一个高度分散和人为改造的栖息地。我们研究了种群遗传结构和遗传多样性的物种，并调查了环境和人为因素，可能塑造了它的种群结构。我们使用了214个独特的多位点基因型，来自41个社会群体的主要分布区的T。leucocephalus的遗传结构较强，地方种群间遗传分化明显。我们的景观遗传分析，使用因果建模框架表明，一个大的栖息地差距和地理距离代表的主要景观元素塑造遗传结构，但高水平的遗传分化也存在于小生境差距或道路分隔的斑块之间。这是第一个全面的研究，评估了群体遗传结构和多样性的T。用核标记检测白血病我们的研究结果表明，强烈的负面影响，人为的土地修改和栖息地破碎化的灵长类动物之间的遗传连接森林斑块。我们的分析表明，两个管理单位的物种可以被定义，并表明栖息地的连续性应强制执行和恢复，以减少遗传隔离，提高人口的生存能力。
Habitat fragmentation may strongly impact population genetic structure and reduce the genetic diversity and viability of small and isolated populations. The white-headed langur (Trachypithecus leucocephalus) is a critically endangered primate species living in a highly fragmented and human-modified habitat in southern China. We examined the population genetic structure and genetic diversity of the species and investigated the environmental and anthropogenic factors that may have shaped its population structure. We used 214 unique multi-locus genotypes from 41 social groups across the main distribution area of T. leucocephalus, and found strong genetic structure and significant genetic differentiation among local populations. Our landscape genetic analyses using a causal modelling framework suggest that a large habitat gap and geographical distance represent the primary landscape elements shaping genetic structure, yet high levels of genetic differentiation also exist between patches separated by a small habitat gap or road. This is the first comprehensive study that has evaluated the population genetic structure and diversity of T. leucocephalus using nuclear markers. Our results indicate strong negative impacts of anthropogenic land modifications and habitat fragmentation on primate genetic connectivity between forest patches. Our analyses suggest that two management units of the species could be defined, and indicate that habitat continuity should be enforced and restored to reduce genetic isolation and enhance population viability.
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影响因子：
3.3
作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
通讯作者：
J. K. Pritchard;Matthew Stephens;Peter Donnelly
影响因子：
3.7
作者：
Liu Z;Wang B;Nadler T;Liu G;Sun T;Huang C;Zhou Q;Zhou J;Que T;Wang Z;Roos C;Li M
通讯作者：
Li M
影响因子：
2.5
作者：
Jordi Salmona;Helena Teixeira;Emmanuel Rasolondraibe;Isa Aleixo-Pais;Célia Kun-Rodrigues;Ando N Rakotonanahary;Fabien Jan;C. Rabarivola;J. Zaonarivelo;N. Andriaholinirina;L. Chikhi
通讯作者：
Jordi Salmona;Helena Teixeira;Emmanuel Rasolondraibe;Isa Aleixo-Pais;Célia Kun-Rodrigues;Ando N Rakotonanahary;Fabien Jan;C. Rabarivola;J. Zaonarivelo;N. Andriaholinirina;L. Chikhi
影响因子：
2.2
作者：
G. Segelbacher;S. Cushman;B. Epperson;M. Fortin;O. François;O. Hardy;R. Holderegger;P. Taberlet
通讯作者：
G. Segelbacher;S. Cushman;B. Epperson;M. Fortin;O. François;O. Hardy;R. Holderegger;P. Taberlet
影响因子：
3.7
作者：
Chaves PB;Alvarenga CS;Possamai Cde B;Dias LG;Boubli JP;Strier KB;Mendes SL;Fagundes V
通讯作者：
Fagundes V