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Efficacy of Guava (Psidium Guajava) Extract Against Some Fish and Shrimp Pathogenic Agents

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Title: Efficacy of Guava (Psidium Guajava) Extract Against Some Fish and Shrimp Pathogenic Agents
Authors: Direkbusarakom, S. Browse this author
Herunsalee, A. Browse this author
Yoshimizu, M. Browse this author →KAKEN DB
Ezura, Y. Browse this author
Kimura, T. Browse this author
Issue Date: 1997
Publisher: Fish Health Section, Asian Fisheries Society
Citation: Edited by T.W. Flegel and .I.H. MacRae
Journal Title: Diseases in Asian Aquaculture. III
Start Page: 359
End Page: 363
Abstract: Guava (Psidium guajava) extract was tested for anti viral activity against the fish pathogenic viruses, infectious haematopoietic necrosis virus (IHNV), infectious pancreatic necrosis virus (IPNV), and Oncorhynchus masou virus (OMV) using plaque reduction in CHSE-214 cell lines. Anti viral tests against the shrimp pathogenic virus, yellow-head virus (YHV), was carried out using the injection method. The efficacy of guava extract was also determined using MIC of the extract against 24 strains of pathogenic bacteria including; Vibrio harveyi (9 strains), V. splendidus (7 strains), V. parahaemolyticus (2 strains) and 1 strain of each V. mimicus, V. vulnificus, V. fluvialis, V. chorelae, V. alginolyticus and Aeromonas hydrophila. A toxicity test of the extract was performed with CHSE-214 cell lines and post larvae 15 of black tiger shrimp (Penaeus monodon). The efficacy of guava extract for the prevention of viral disease and bacterial disease in aquatic animals was estimated using YHV infection in black tiger shrimp and A. hydrophila infection in catfish, respectively. The extract of guava demonstrated anti viral activity against IHNV, OMV and YHV but was not effective for IPNV. Furthermore, the MIC of the extract ranged from 625 - 5,000 μg/ml against all pathogenic bacterial strains tested. The 50% cytotoxicity of the extract to CHSE-214 was 1,923 μg/ml while the LD50 of the extract to black tiger shrimp post larvae was 2,968 ± 3.8 μg/ml. These results show that guava extract has low toxicity to salmon cell lines and black tiger shrimp. Moreover, the extract is effective for prevention of bacterial infection in catfish (Clarias macrocephalus) while not suitable for prevention of yellow-head virus infection in black tiger shrimp. From these results, guava can be recommended for treatment of bacterial disease in fish. The route of administration and effective dose should be determined before their efficacy can be tested in field trials.
Description: Third Symposium on Diseases in Asian Aquaculture. 1996. Bangkok, Thailand.
Conference Name: Symposium on Diseases in Asian Aquaculture
Conference Sequence: 3
Conference Place: Bangkok
Type: proceedings
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉水 守

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