Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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A new record of Caprella aino (Crustacea: Amphipoda: Caprellidae) from the southeastern waters of Korea, with comparison to Caprella mutica

  • Gi Beom Ryu (Department of Marine Biology, Pukyong National University) ;
  • Won Gyu Park (Department of Marine Biology, Pukyong National University)
  • Received : 2023.04.05
  • Accepted : 2023.05.26
  • Published : 2023.07.31
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Abstract

40 species of the family Caprellidae Leach, 1814 are recorded in Korean waters. Caprella aino Utinomi, 1943 was newly collected from seaweed farms from the southeastern waters of Korea. C. aino was firstly reported in Japanese waters in 1943. Adults of C. aino and Caprella mutica Schurin, 1935 are easily distinguished in that C. aino have pereonite II and gnathopod II without setae and two small tubercles of articulation of gills in pereonite III-IV, while C. mutica do pereonite II and gnathopod II covered with setae and those of pereonites III-VII with many tubercles. However, subadult C. mutica is hardly distinguishable from C. aino in that tubercles of pereonite III are less developed and they have inconspicuous setae of pereonite II and gnathopod II. Nevertheless, C. aino is distinguished from subadult C. mutica because adult C. aino have dorsal tubercles on pereonite IV, V, VI, VII unlike that of C. mutica. We report C. aino as a new record in Korean water with comparison of C. mutica.

Keywords

Acknowledgement

This work was supported by a Research Grant of Pukyong National University (2021).

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