Article

International Journal of Primatology

, Volume 28, Issue 4, pp 791-799

First online:

Mitochondrial Control Region and Population Genetic Patterns of Nycticebus bengalensis and N. pygmaeus

  • Deng PanAffiliated withLaboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology, Chinese Academy of SciencesLaboratory for Conservation and Utilization of Bio-resources, Yunnan UniversityThe Graduate School, Chinese Academy of Sciences
  • , Jing-Hua ChenAffiliated withLaboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology, Chinese Academy of SciencesLaboratory for Conservation and Utilization of Bio-resources, Yunnan UniversitySchool of Life Science, Shandong University
  • , Colin GrovesAffiliated withSchool of Archaeology & Anthropology, Australian National University
  • , Ying-Xiang WangAffiliated withDepartment of Phylogensis and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences
  • , Etsuo NarushimaAffiliated withUeno Zoological Gardens
  • , Helena Fitch-SnyderAffiliated withLoris Conservation InternationalZoological Society of San Diego
  • , Paul CrowAffiliated withKadoorie Farm & Botanic Garden Corporation
  • , Xiangyu JinggongAffiliated withLaboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences
  • , Vu Ngoc ThanhAffiliated withDepartment of Vertebrate Zoology, Vietnam National University
    • , Oliver RyderAffiliated withZoological Society of San Diego
    • , Leona ChemnickAffiliated withZoological Society of San Diego
    • , Hong-Wei ZhangAffiliated withLaboratory for Conservation and Utilization of Bio-resources, Yunnan University
    • , Yun-Xin FuAffiliated withLaboratory for Conservation and Utilization of Bio-resources, Yunnan UniversityHuman Genetics Center, University of Texas at Houston
    • , Ya-Ping ZhangAffiliated withLaboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology, Chinese Academy of SciencesLaboratory for Conservation and Utilization of Bio-resources, Yunnan University Email author 

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Abstract

Bengal slow lorises (Nycticebus bengalensis) and pygmy slow lorises (Nycticebus pygmaeus) are nocturnal which creates difficulties to study them in the field. There is a scarcity of data on them and their population genetics are poorly understood. We sequenced and analyzed a partial fragment in the first hypervariable region of the mitochondrial control region or D-loop HVRI of 21 Nycticebus bengalensis and 119 N. pygmaeus from the boundary between China and Vietnam where they are sympatric. Though the sample size for Nycticebus pygmaeus is much larger, the polymorphism level is much lower than that of N. bengalensis, possibly because of (1) external gene flow from other habitats of N. bengalensis, (2) gene ingression from Sunda slow lorises (N. coucang coucang) to N. bengalensis, (3) a skewed birth sex ratio in N. pygmaeus, and (4) a possible low survival rate of infant N. pygmaeus. Based on genetic comparisons to Nycticebus bengalensis, we propose that N. pygmaeus in southern China and northern Vietnam might have migrated from middle or southern Vietnam recently.

Keywords

Bengal slow loris pygmy slow loris population genetics mitochondrial control region