Re-evaluation of extinction risk of four Korean land snails (Mollusca, Gastropoda) based on intensive field survey and genetic diversity of COI or 16S rRNA

초록

This study aims to re-evaluate risk of extinction the Red List categories of four Korean land snail species, Euhadra dixoni (Pilsbry, 1900), E. herklotsi (E. von Martens, 1861), Nesiohelix samarangae (Kuroda and Miyanaga, 1943), and Cyclophorus herklotsi E. von Martens, 1861, based on field surveys and genetic diversity analyses. Genetic diversity was evaluated with COI or 16S rRNA. The results suggested that the categorical rank of the Red List of E. dixoni be changed from Endangered (EN) to Critically Endangered (CR). On the other hand, we recommended that the categorical ranks of E. herklotsi, 16S rRNA and C. herklotsi may be kept to the present status, Vulnerable (VU). This study raises the usefulness of the addition of genetic information in evaluating extinction risk of the molluscan species listed in the Red List, which would be helpful for successful management and conservation of land snails in Korea.

키워드