• Korean Journal of Environmental Biology
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• v.21 no.2
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• pp.177-180
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• 2003

Four genera of metazoan parasites were recovered from 3 of 6 Sebastes pinniger examined during January 2003. Two hundred forty-five metazoan parasites were recovered. Trochopus trituba Sekerak and Arai, 1977 and Anisakis larvae were found to he infected S. finniger Gill and te be abundant in this rockfish. One hundred eleven worms of monogenean trematodes and 134 larval anisakine nematodes were also found in this fishes. Precise positions with regard to gills, fins, and gastrointestinal tracts were recorded on S. pinniger to determine distribution of metazoan parasites of Trochopus trituba, Anisakis simplex larva, Contracaecum sp. larva, and Pseudo terranova decipiens larva. The monogenean trematodes, T. trituba were attacked to the gill arches and fin, and the larval anisakine nematodes, A. simplex, Contracaecum sp.,and P. decipiens were found on the visceral organs such as intestine, omentum and stomach wall. The second gill arches were the most heavily infested and posterodorsal region of the gill arches contained most monegenenn trematodes. The nam site of infestation of larval anisakine nematodes were the intestine.

• Journal of Environmental Health Sciences
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• v.26 no.2
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• pp.67-69
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• 2000

Yellow tails (Seriola quinqueradiata) were purchased from the Jakalchi fish market located in Busna and examined for anisakid larvae. The collected larvae were classified by their morphologicaltypes. Of the 16 yellow tails exmained, seven (43.8%) were infected with the larvae. Among 90 larvae, 81 were collected from the omentum and 9 from the muscle. Anisakids were classified into five larval types, anisakis type I (56 larvae in number, 62.2%), Contracaecum type A (8, 8.9%) and type D (7, 7.8%) and Contracaecum type C (19, 21.1%). The present study revealed that Anisakis type I was the most common among the five larval types in the yellow tails caught in the South sea of Korea peninsula.

• Parasites, Hosts and Diseases
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• v.33 no.2
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• pp.95-100
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• 1995

A survey was carried out on the larval anilsakids in anchovies (Engrnuyis jnponica) which were caught from April to .lune in 1993 at the southern and eastern sea in Korea. Anisakids in anchovies were morphological classified into Anisakis type I and II and Contracaecum type B and C, after fixation in 70% alcohol and clearing in lactophenol. A examined. The infection rates showed no relation with length of the anchovies. The numbers of anisakids by organs of anchovies were 96 (56.1%) from the muscle, 65 (38.0%) from the omentum, 7 (4.1%) from the intestine, 2 (1.7%) from the stomach and 1 (0.6%) from the testis. Infection rates of anchovies with anisakids by localities were 5.1% at Taebyon, 8.0% at Sokcho and 9.2% at Chungmu. The larval uisikids in anchovies may infect humans who often eat raw anchovies.

• Journal of agricultural medicine and community health
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• v.13 no.1
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• pp.32-40
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• 1988

Anisakiasis occur after the ingestion of raw marine fish and squid containg anisakid larvae. In recent years about 40 cases of anisakiasis have been recorded in Korea. Considering, however, the Korean style of eating raw fish, many more cases would exist and prevention is necessary. We describe the infection rate of anisakid larvae in 13 species of marine fish and squid which were caught in the Korean sea. And each extracted larva is classified according to morphological characters. The results are following ; Scomber japonicus, Pseudosciaena manchurica, Trichiurus haumela showed high infection rate of anisakid larvae. Although Sepia esculenta showed low infection rate, most of anisakid larvae found in Sepia edulis are embedded in muscles. So relative high frequent rate of anisakiasis may developed by Sepia esculenta. Five type (Anisakis Type I, Terranova Type B, Raphidascaris sp., Contracaecum Type A, Contracaecum Type D) of anisakid larvae are classified according to their morphological characters.

• Proceedings of the Korean Society of Veterinary Pathology Conference
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• 2004.10a
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• pp.39-39
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• 2004

• Parasites, Hosts and Diseases
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• v.30 no.4
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• pp.263-268
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• 1992

A study was presented on the anisakid larvae in Astroconger myriaster which were caught at the Southern Sea and waled at Pusan area. The nematodes were morphologically classified into Anisakis sp. and Centracgecum sp. after fixation in 70% ethanol and clearing in lactophenol. Total of 1, 768 larval anisakids were collected from 259(67.8% positive rate) out of 382 examined A. myriaster. Total 642 larvae of Anisakis sp. were obtained from 94 (24.6%) and 1, 126 Ccntracaecum sp. were recovered from 165 (43.1%) fish. The average number of worms per infected fish was 4.6. The infection rate increased according to the length of fish, and all of the fish over 71 cm were found infected. The numbers (proportions) of recovered worms by the organs were 1, 440 (80.5%) in the omentuin, 166(9.4%) in the intestine, 107(6.0%) in the stomach, 32(1.8%) in the skin, 18(1.0%) in the muscle, 13(0.7%) in the liver, and 2(0.1%) in the head. The larvae in the muscle may infect the humans who are enjoying raw sliced meat of the fish.

• Journal of fish pathology
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• v.23 no.1
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• pp.123-129
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• 2010

The infestation status of anisakid type larvae was investigated in migrating chum salmon (Oncorhynchus keta), with different condition (captured area, sex, body portion) during 2006~2008. The mean infection number of anisakid larvae per individual female and male fish captured from Namdae river was $98{\pm}27$, $103{\pm}27$, respectively. The mean infection number of anisakid larvae per individual female and male fish captured from the coastal area of Yangyang was $63{\pm}18$ and $108{\pm}17$, respectively. The anisakid larvae were mainly found in abdominal muscles (85%) but only a little in the visceral portion. Two types of anisakid larvae (A. simplex, Contracaecum type) were identified but other anisakid larvae were not detected. To investigate the effect of storing temperature on the viability of anisakid larvae, the section of abdominal muscle were stored at different temperature (room temperature, $4^{\circ}C$, $-20^{\circ}C$, $-80^{\circ}C$). As a result, it was necessary to store at $-20^{\circ}C$ for more than 6 hrs to kill the larvae. The present results revealed that chum salmon caught in Korea are heavily infected with anisakid larvae, mainly in the abdominal muscle, and A. simplex was dominantly found in this study.

• Parasites, Hosts and Diseases
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• v.50 no.4
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• pp.295-299
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• 2012

The present study was performed to determine the infection status of anisakid larvae in marine fish collected from 3 sea areas of the Republic of Korea. Total 86 marine fish (8 species) collected from the East Sea (Goseong-gun, Gangwon-do), 171 fish (10 species) from the South Sea (Sacheon-si, Gyeongsangnam-do), and 92 fish (7 species) from the Yellow Sea (Incheon Metropolitan City) were examined by both naked eyes and artificial digestion method. Among the total of 349 fish examined, 213 (61.0%) were infected with 8 species of anisakid larvae, i.e., Anisakis simplex, 6 types of Contracaecum spp., and Raphidascaris sp., and the mean larval density was 13.8 per infected fish. Anisakid larvae were detected in 45 fish (52.3%) from the East Sea, 131 fish (76.6%) from the South Sea, and 37 fish (40.2%) from the Yellow Sea. The average numbers of larvae detected were 4.0, 16.6, and 15.9, respectively. Anisakis simplex larvae were detected in 149 fish (42.7%), and the mean larval density was 9.0 per infected fish. They were found in 26 fish (30.2%) collected from the East Sea, 96 fish (56.1%) from the South Sea, and 27 fish (29.3%) from the Yellow Sea. The average numbers of larvae detected were 2.9, 10.3, and 10.5, respectively. Conclusively, the present study suggests that the infection rate and density of anisakid larvae are more or less higher in the fish from the South Sea than those from the East Sea or the Yellow Sea.

• Korean Journal of Veterinary Research
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• v.21 no.2
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• pp.105-112
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• 1981

The morphological and structural studios of Anisakinae larva has been carried out since Sept. of 1980. The larva were collected from naturally infested eleven swine of 1,531 examined at Kwang-Ju abattoir and from marine fishes, Somber japonicus, bought at Kwang-Ju fish market. The results observed were as follow : 1. Anisakis larva found in the stomach wall and on the surface of the mucosa were more or less degenerated. According to the progress of degeneration, the cross sections showed varied structures (Fig. 6, 7). 2. Size of the larva both from swine and fishes were measured respectively in average(mm); 18.0 and 18.7 in body length, 0.30 and 0.41 in body width, 1.64 and 1.68 in esophagus(muscular-part), 0.56 and 0.67 in ventriculus (glandular part), and 0.13 and 0.12 in tail. It was notable that body length of the larva in this present data, 18.0mm and 1.87mm, were shorter than those in previous dada, 24.3mm from human cases and 28.4mm from, however, the present data were almost similar to the data, 1.75mm, from swine case. 3. The Boring tooth, Mucron, long ventriculus and short round tail were observed in the larva of this present study. These structures were differentiated from Anisakis type II larvae which was provided with short ventriculus, and conical and tapering tall without mucron. 4. The ventricular appendix and intestnal caecum were not present in the larva. These might be differentiated from other Anisakidae larva such as Terranova larvae, Contracaecum larvae, Raphidascaris larvae and Thynnascaris larvae. 5. The findings through the histological observation were a pair of Y-shaped or butterfly-shaped lateal chords, ventral and dorsal chords, excretory(Renette) cell, high columnar epithelial cells of digestive tract and muscle cells. These morphological characteristics revealed varied features in the structures in the degenerative degree of the larva in the stomach wall. 6. The above-mentioned characteristics of the larva observed could be indentified as Anisakis type I larvae. 7. The reports on natural infestation of domestic animal with Anisakis type I larvae were two swine cases in Korea and Japan respectively, On the other hand two human cases of the larva were reported in Korea and more than one thousand cases in Japan. In Twiwan no reports of human and domestic animal cases could be found.