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<p>Compared to the common and geographically widespread species, narrowly endemic species are more vulnerable and have a greater extinction risk. <i>Dipterocarpus cinereus</i>, an endemic island species on Mursala Island, Sumatra, Indonesia, which was once declared extinct in the wild, is considered a critically endangered species which requires detailed information on its evolutionary ecology to develop its conservation strategy. SNP data derived from MIG-seq is used to understand its genetic diversity and structure. Our results indicate that all five populations have a low level of genetic diversity compared to other endemic dipterocarp species found on the island and mainland. Four or five genetic clusters explain the genetic composition of the populations. Low genetic differentiation among the populations suggests continuous gene flow despite forest fragmentation occurring on the island. Ensuring population size stability and gene flow through island protection is necessary to conserve the species.</p>

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The critically endangered Dipterocarpus cinereus is undergoing a genetic bottleneck: evidence from MIG-seq analysis

  • 期刊论文

  • 发表日期：

    2026年3月3日

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  • Iyan Robiansyah,
  • Yayan Wahyu Candra Kusuma,
  • Muhammad Imam Surya,
  • Kusumadewi Sri Yulita,
  • Siti Kurniawati,
  • Kazuki Kurita,
  • Enny Sudarmonowati,
  • Yoshihisa Suyama,
  • Yuji Isagi

摘要

Compared to the common and geographically widespread species, narrowly endemic species are more vulnerable and have a greater extinction risk. Dipterocarpus cinereus, an endemic island species on Mursala Island, Sumatra, Indonesia, which was once declared extinct in the wild, is considered a critically endangered species which requires detailed information on its evolutionary ecology to develop its conservation strategy. SNP data derived from MIG-seq is used to understand its genetic diversity and structure. Our results indicate that all five populations have a low level of genetic diversity compared to other endemic dipterocarp species found on the island and mainland. Four or five genetic clusters explain the genetic composition of the populations. Low genetic differentiation among the populations suggests continuous gene flow despite forest fragmentation occurring on the island. Ensuring population size stability and gene flow through island protection is necessary to conserve the species.