Journal of Veterinary Clinics (한국임상수의학회지)

The Korean Society of Veterinary Clinics (한국임상수의학회)
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Characterization of the Intestinal Corynosoma strumosum (Phylum: Acanthocephala) from the Harbor Seal, Phoca largha, from the East Sea, Korea

  • Sangjin Ahn (College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University) ;
  • Hyeon-Cheol Kim (College of Veterinary Medicine and Institute of Veterinary Science, Kangwon National University) ;
  • Bae-keun Park (College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University)
  • Received : 2023.06.13
  • Accepted : 2023.08.12
  • Published : 2023.08.31
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Abstract

An acanthocephalan parasite, Corynosoma strumosum, was found in the intestine of harbor seal, Phoca largha, living in the East Sea, Korea. The probosci's hook and trunk spine patterns typical of the collected worms indicated it to be C. strumosum. The body lengths measured are 4.2-5.8 (4.9) mm in males and 5.3-6.8 (5.7) mm in females. The proboscis is bent ventrally, armed with 18 longitudinal rows of 9-13 hooks in males and 20 longitudinal rows of 11-13 hooks in females. The proboscis receptacle is double-walled with the robust trapezoidal neck being unarmed. The hind-trunk is pipe-shaped with posterior parallel sides. The characteristic hind trunk spines cover the anterior third of the ventral surface. The lemnisci are equal and slightly shorter than the double-walled proboscis receptacle, which is longer than the proboscis. This species is an acanthocephalan parasite reported for the first time in Korea.

Keywords

Acknowledgement

The Basic Science Research Program supported this research through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (Grant No. 2017RIDIAIB06031728) and (NRF-2021R1F1A1064044). The authors thank the Gangwon Wildlife Medical Rescue Center for providing carcasses.

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