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Anisakis simplex Larvae: Infection Status in Marine Fish and Cephalopods Purchased from the Cooperative Fish Market in Busan, Korea

Korean Journal of Parasitology 2011년 49권 1호 p.39 ~ 44
 ( Choi Seon-Hee ) - Pusan National University School of Medicine Department of Parasitology

 ( Kim Jung ) - Kosin University College of Medicine Department of Parasitology and Genetics
 ( Cho Min-Kyung ) - Pusan National University School of Medicine Department of Parasitology
 ( Yu Hak-Sun ) - Pusan National University School of Medicine Department of Parasitology
차희재 ( Cha Hee-Jae ) - Kosin University College of Medicine Department of Parasitology and Genetics
옥미선 ( Ock Mee-Sun ) - Kosin University College of Medicine Department of Parasitology and Genetics

Abstract


The infection status of marine fish and cephalopods with Anisakis simplex third stage larva (L3) was studied over a period of 1 year. A total of 2,537 specimens, which consisted of 40 species of fish and 3 species of cephalopods, were purchased from the Cooperative Fish Market in Busan, Korea, from August 2006 to July 2007. They were examined for A. simplex L3 from the whole body cavity, viscera, and muscles. A. simplex L3 were confirmed by light microscopy. The overall infection rate reached 34.3%, and average 17.1 larvae were parasitized per infected fish. Fish that recorded the highest infection rate was Lophiomus setigerus (100%), followed by Liparis tessellates (90%), Pleurogrammus azonus (90%), and Scomber japonicus (88.7%). The intensity of infection was the highest in Gadus macrocephalus (117.7 larvae per fish), followed by S. japonicus (103.9 larvae) and L. setigerus (54.2 larvae). Although abundance of A. simplex L3 was not seasonal in most of the fish species, 10 of the 16 selected species showed the highest abundance in February and April. A positive correlation between the intensity of L3 infection and the fish length was obvious in S. japonicus and G. macrocephalus. It was likely that A. simplex L3 are more frequently infected during the spring season in some species of fish. Our study revealed that eating raw or undercooked fish or cephalopods could still be a source of human infection with A. simplex L3 in Korea.

키워드

Anisakis simplex; third stage larva (L3); fish; cephalopod; infection rate; abundance; intensity of infection; seasonality
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