A study on necessary condition for population growth in the Miyako grass lizard based on population density pattern and population genetic structure ―Miyako Grass Lizard Research Group―

DOI

Bibliographic Information

Other Title
  • 国内希少種ミヤコカナヘビにおいてなにが個体群の成長を妨げているのか？生息密度勾配の把握と集団構造解析によるアプローチ ―ミヤコカナヘビ研究グループ―

Abstract

<p>We aimed to clarify geographical pattern in population densities at micro- and meso-geographic scales, and gene flows between habitat patches in the Miyako glass lizard in order to estimate necessary condition for population growth in this endangered species. First, we examined distribution pattern of individuals within high-density areas and found that they exhibited aggregated distribution irrespective of microhabitat in many months. Next, we conducted distribution survey at wider geographic scale in the autumn seasons of 2020 and 2021. More than one individual was found in two consecutive years in 8 out of 136 sites we surveyed. These 8 sites were assigned to 3 geographic groups, each surrounded by apparently “absent areas” of the lizard. We attempted the microsatellite analysis to evaluate gene flow between the habitat patches, but this is still unconducted due to failure of gaining sufficient number of microsatellite loci. The aggregated distributions at both two geographical scales suggest that high population density itself is important for maintaining and growth of the populations in this species.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390579444529030272
  • DOI
    10.32215/pronatura.32.0_49
  • ISSN
    21897727
    24320943
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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