Korean J Parasitol.  1996 Jun;34(2):107-112. 10.3347/kjp.1996.34.2.107.

A nationwide survey of naturally produced oysters for infection with Gymnophalloides seoi metacercariae

• Lee SH
• Sohn WM
• Hong SJ
• Huh S
• Seo M
• Choi MH
• Chai JY

• KMID: 658219
• DOI: http://doi.org/10.3347/kjp.1996.34.2.107

Abstract

A nationwide survey was performed to know the geographical distribution of Gymnophalloides seoi (Digenea: Gymnophallidae) metacercariae in Korea, by examining the infection status of locally produced oysters, Crassostrea gigas. A total of 24 coastal areas (myons) of 14 guns ( = counties) in Kyonggi-do, Chollabuk-do, Chollanam-do, Kyongsangnam-do, Kyongsangbuk-do, or Kangwon-do, where natural oysters are produced but G. seoi has never been reported, and 13 areas (myons) of Shinan-gun, Chollanam-do, nearby the known endemic area, were surveyed. Oysters from nonendemic areas were free from G. seoi infection, except Byonsan- myon of Buan-gun, Chollabuk-do, where one of 50 oysters examined was infected with 15 metacercariae of G. seoi. In Shinan-gun, oysters from 10 areas including Aphae-myon ( = township) and Anjwa-myon were infected with the metacercariae, with the infection rate ranging from 1.7% to 100% by areas. The intensity of infection was the highest in Aphae-myon. 785.9 metacercariae per oyster. The results indicate that high prevalence of G. seoi is confined to Shinan-gun, but low grade prevalence is also present in adjacent areas such as Buan-gun, Chollabuk-do.

MeSH Terms

Animal
Korea
Oysters/*PARASITOLOGY
Prevalence
Support, Non-U.S. Gov't
Trematoda/*ISOLATION, PURIFICATION