Journal of Species Research

The National Institute of Biological Resources (국립생물자원관)
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First report of the branchiobdellidan Holtodrilus truncatus (Annelida: Clitellata) found on the freshwater atyid shrimp Neocaridina sp. from Korea

  • Ahn, Dong-Ha (Department of Biological Sciences, Inha University) ;
  • Min, Gi-Sik (Department of Biological Sciences, Inha University)
  • Received : 2016.08.16
  • Accepted : 2016.10.13
  • Published : 2016.10.31
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Abstract

The branchiobdellidan species Holtodrilus truncatus (Liang, 1963) is reported for the first time in Korea. The genus Holtodrilus Gelder and Brinkhurst, 1990 is monotypic within the family Xironodrilidae, and the genus and family of this species are also new to the Korean fauna. The branchiobdellidan specimens were collected from the exoskeletons of the freshwater atyid shrimp, Neocaridina sp., sampled from the 'Andeok Valley', Jeju-do Province, South Korea. Holtodrilus truncatus is characterized by its terete body form, 7/7 dental formula (with a large medial tooth and three pairs of smaller lateral teeth), and no trunk appendages. In addition, we determined a partial sequence of the mitochondrial cytochrome c oxidase subunit 1 (CO1) gene as a DNA barcode marker for H. truncatus. The present study is the first record of the branchiobdellidan occurrence on a non-crayfish host (shrimp) in Korea. To date, seven species (four genera in three families) of branchiobdellidans have been reported in the Korean fauna.

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References

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