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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of fish pathology
Journal Basic Information
Journal DOI :
The Korean Society of Fish Pathology
Editor in Chief :
Volume & Issues
Volume 1, Issue 2 - Dec 1988
Volume 1, Issue 1 - May 1988
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Detection and Control of Bacterial Diseases of Cultured Fishes in Korea
Chun, Seh-Kyu ;
Journal of fish pathology, volume 1, issue 1, 1988, Pages 5~30
This is a comprehensive study for considering the effective treatment and control program of bacterial disease occurring in common carp, israel carp, color carp, crucian carp, eel and tilapia by clarifying the causes, mechanism of infection and onset and the diagnostic criteria. As a first step, the authors investigated the external views, gross and histopathologic findings of diseased fish using 450 infected fishes obtained from various farmer of Korea. This infection was characterized by hyperemia, hemorrhage and swelling of body surface and fins, congestion of liver, spleen, kidney, inflammation of intestine, hemorrhagic inflammation of various tissues, and necrosis and ulcer of various tissues were accompanied in serious cases. Bacteriologically, Aeromonas hydrophila and Edwardsiella tarda were isoiated from these fishes. Particularly in the regular check on 222 eels, 177 strains were isolated as 29.94% of Aeromonas hydrophila, 48.58% of Edwardsiella tarda and 21.47% of Flexibacter columnaris. Hexibacter columnaris was isolated from corroded gill of eels. The identical disease was occurred by innoculating the isolated Aeromonas hydrophila and Edwardsiella tarda and the identical strains were isolated from infected experimental fishes. The eels which were diagnosed Aeromonas disease from Kwangju, Pusan accompanied hemorrhage, swelling of body surface and fins, inflammation of stomach and intestine containing mucous fluids mixed with the pathogens. Color carp and crucian carp which were innoculated with the isolated 5 strins of Aeromomas hydrorphil died within 3 or 4 days accompanying with the characteristics of Aeromonas disease. Edward disease was characterized by abscesses of body surface, pus formation with concentration on phagocytes. The size of absecsses increased with progression elf disease. There were also various abscesses at internal organ and white nodules appeared in kidney. Histologically, various progressive granuloma were examined without inflammation of intestine. Columnaris disease of eels showed no hemorrhage except slight white body color. In autopsy, most of internal organs appeared normal and there were no septic odors. The only character was corrosion of gills. In order to treat these bacterial diseases, infected fishes must bathe in 20ppm chloramphenicol or kanamycin solution for 1 hour. Besides, medication program in oral ingestion of 75mg/kg chloramphenicol per day continuing for 5 to 7 days. After injecting the formalin treated Aermonas hydrophila antigen into carp, relatively high agglutination titer showed between 3 weeks and 6 weeks. Though this titer decreased from that time, it was continued for 18 weeks. In the case of injecting the formalin treated Edwardsiella tarda antigen into tilapia, the titer also increased. But tilapia which were immersed in the suspension fluid of the formalin treated Edwardsiella tarda showed no increase of the titer.
Studies on A Trematode Parasitized on Bivalves V. On metacercaria of Echinostomatidae detected from Mactra veneriformis, Cyclina sinensis and Solen strictus
Kim, Young-Gill ;
Journal of fish pathology, volume 1, issue 1, 1988, Pages 31~37
An experiment was carried out in order to reveal the infection species of trematode and the infection demage in the marine bivalves. Metacercaria of Echinostomatidae were found in Mactra veneriformis, Cyclina sinensis and Solen strictus in the vicinity sea of Naecho-do, the estuary of the Keum River in the western coast of Korea. The metacercaria detected from Solen strictus were fed by Larus crassiostris, at 16 days after infection, the adult worm could be seceded. The metacercaria of Himasthla kusasigi were detected from Mactra veneriformis and Cyclina sinensis, their infection rates were 70.4% and 85.7% respectively. The partial infection rates with respect to the body parts were 40.4% and 77.3% in the foot, 17.0% and 12.4% in the gill, 12.6% and 10.3% in the mantle in order. The metacercaria of Acanthoparyphium were found from Solen strictus. The total infection rate was 63% and the partial infection rate was 63% and the partial infection rate was shown foot, mantle and gill in order. The adult worm ceded from Larus crassiostris was indentified as Acanthoparyphium tyosenensis Yamaguti, 1938 from view point of its physical characteristics. Therefore, Mactra veneriformis, Cyclina sinensis would be added as new intermediate hosts, and Echoinostoma decteded from Mactra sulcataria which was studied by author(1969) was revealed as larvae of Acanthoparyphium tyosenensis.
Characteristics of Vibrio sp. Isolated from Cultured Red Sea Bream in the Winter
Choi, Hye-Sung ; Yun, Jang-Keun ; Park, Soo-Il ;
Journal of fish pathology, volume 1, issue 1, 1988, Pages 39~43
Three strains of pathogenic bacteria isolated from diseased red sea bream at a culture farm in Gyoung sangnam-Do during the midwinter of 1987 were studied taxonomically. Based on their biological and biochemical characteristics, they were identified as Vibrio sp.. They exhibited very similarities to group II (Kusuda et al.,1979) except that the former can grow at lower temperature.
Serotyping of Vibrio anguillarum isoated from cultured marine fishes
Lee, Jong-Yun ; Chun, Seh-Kyu ; Park, Soo-Il ;
Journal of fish pathology, volume 1, issue 1, 1988, Pages 45~50
26 strains of Vibrio anguillarum isolated from Seriola quinqueradiata, Chrysophrys major and Oplegnathus faseiatus between July 1985 and December 1986 were examined for their serological identification. When the isolates were examined on the basis of cross-agglutination and crossabsorption tests with thermostable antigens(O) of V, anguillarum 6 serotypes reported by Kitao et at.(1983), they showed positive agglutination reaction only with serotype C, the representative strain PT-213, and also formed double precipitation lines against anti-PT-213 serum, and specifically reacted with the PT-213 strain on cross-absorption test. Therfore, it was thought that all the isolates have single serotype and its serotype is identical with serotype C. the representatve strain PT-213 reported by Kitao et al. (1983).
The Infection Experiment of Pleistophora sp. to eel, Anguilla japonica and the Histopathological Investigation of the Infection Development
Suh, Jang-Woo ; Chun, Seh-Kyu ;
Journal of fish pathology, volume 1, issue 1, 1988, Pages 51~57
Pleistophora disease is well known as microsporidiosis at eel cultural farms in Korea in recent years. Major objects of this study were to undertake the induction of Pleistophora infection experimentally and to carry out histopathological investigation from December 1984 to June 1986. Experimental infection of Pleistophora spores into young eels was carried out by oral and immersed administration. Both methods induced the same symptom successfully as that in naturally occurring diseased fish. Remarkable whitish lesions developed mainly on the body surface around the abdomen when orally administrated. On the other hand, they were scattered over the whole body when administrated through immersion. Histopathological investigation revealed that some cysts in the muscle were observed 21 days after administration. Spores were developed within the cyst. Each sporont has undergone several nuclear divisions to form a pair of multinucleate cells (Sporoblasts) enclosed within a common coat (Pansporoblast). All stages were surrounded by cyst. The cysts were destroyed and mature spores were scattered in the muscle.
Effects of the Anaesthetic lidocaine on Some fishes
Kim, Dong-Soo ; Bang, In-Chul ; Chun, Seh-Kyu ; Kim, Yeon-Hwan ;
Journal of fish pathology, volume 1, issue 1, 1988, Pages 59~64
Anaesthetis have been in use for a long time in aquaculture because working with anaesthetized aquatic vertebrate was found to be advantages in many technical operations. However, most anaesthetics applied at present have a strong toxic effect on fish. Lidocaine belong to a group of anaesthetics which are used in human medicine. This chemical was evaluated as anaesthetics for seven species of fishes. The response varied for seven test species. Lidocaine was preferable to other conventional fish anaesthetics since it is cheap, safe and convenient to use.