Academic Thesis

Basic information

Name Mekata Tohru
Belonging department
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researchmap researcher code B000288235
researchmap agency Okayama University of Science

Title

Digenean Larva Migrans in Cultured Seriola spp. Caused by Hirudinella ventricosa (Trematoda: Hirudinellidae)

Bibliography Type

Author

Yanagi Soetsu, Mekata Tohru, Imaoka Yoshiaki, Ogawa Kazuo

Summary

In 2013, four cases of digenean infection occurred among 0-year Seriola dumerili, imported from China and subsequently cultured in Kagoshima Prefecture, Japan. ​In each case, a single immature worm was recovered from the abdominal cavity, kidney, or skeletal muscle, associated with black viscous substances, probably of parasite origin, suggesting that the parasite was migrating within the fish body. ​From morphological and molecular analyses, the digenean was identified as Hirudinella ventricosa. ​No such infection was recorded among 1,968 cultured Seriola spp. examined in Kagoshima during 2012–2018 except for the four cases. ​In 2017, black to brown substances were noticed in the fillets of Seriola quinqueradiata at a processing factory. ​The fish with contamination had been cultured for two years from wild seeds caught along the coast of Kagoshima Prefecture. ​No worm was found, but the 28S rRNA gene sequence analysis demonstrated that they were originated from H. ventricosa. ​Both the infection of S. dumerili and the contaminated fillets of S. quinqueradiata are assumed to be the cases of larva migrans caused by the hirudinellid digenean.

Magazine(name)

Fish Pathology

Publisher

Volume

57

Number Of Pages

3

StartingPage

76

EndingPage

82

Date of Issue

2022/09

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Not exist

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