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dc.contributor.authorSritunyalucksana, Kallaya
dc.contributor.editorAya, Frolan A.
dc.contributor.editorde la Peña, Leobert D.
dc.contributor.editorSalayo, Nerissa D.
dc.contributor.editorTendencia, Eleonor A.
dc.date.accessioned2021-12-16T03:51:30Z
dc.date.available2021-12-16T03:51:30Z
dc.date.issued2021-12
dc.identifier.citationSritunyalucksana, K. (2021). Research update on emergent shrimp pathogens in Thailand. In F. A. Aya, L. D. de la Peña, N. D. Salayo, & E. A. Tendencia (Eds.), Proceedings of the International Workshop on the Promotion of Sustainable Aquaculture, Aquatic Animal Health, and Resource Enhancement in Southeast Asia (p. 217). Tigbauan, Iloilo, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center.en
dc.identifier.isbn9789719931102 (Print)
dc.identifier.isbn9789719931119 (PDF)
dc.identifier.urihttp://hdl.handle.net/10862/6274
dc.descriptionAbstract only.en
dc.description.abstractRecent evidence suggest that the emergent microsporidian, Enterocytozoon hepatopenaei (EHP) is a component cause of white feces syndrome (WFS) in shrimp. The natural WFS shrimp were found to be infected with EHP. At the laboratory level, shrimp induced to be heavily infected with EHP showed no WFS symptom suggesting that the causes of WFS is complex involved with other cause, not only EHP. The other component causes are under investigation. Better understanding of virulence mechanism of EHP infection in shrimp will assist in establishing innovative strategies to reduce its viability and potential infectivity in shrimp farms. Transmission of microsporidia is involved ingestion of spores in the water and the site of initial infection being the gastrointestinal tract. EHP spore is having a thick, protective chitinous wall around the cell membrane that allows them to survive outside their hosts and involve with the microsporidian pathogenesis. Here we describe successful purification of active EHP spores with a novel spore viability assay based on polar-tube extrusion or germination triggered by Phloxin B. The physical conditions such as temperature and PH, and chemical factors such as KMnO4, and chlorine that affect spore germination were examined as a practical guideline for the inactivation of the spores at a farm level. The potential environmental reservoir of EHP were found to be a mussel of the genus Mytilopsis, which is found frequently in the water canal or pipe in the shrimp rearing system. Recent evidence demonstrates that the mussel can be infected by EHP and can transmit EHP to shrimp in the laboratory model.en
dc.language.isoenen
dc.publisherAquaculture Department, Southeast Asian Fisheries Development Centeren
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 IGO*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/igo/*
dc.subjectWhite feces syndrome (WFS)en
dc.subjectEnterocytozoon hepatopenaei (EHP)en
dc.subjectshrimp slow growthen
dc.subjectenvironmental reservoiren
dc.subjectMytilopsisen
dc.subjectprawns and shrimpsen
dc.subjectThailanden
dc.titleResearch update on emergent shrimp pathogens in Thailanden
dc.typeConference paperen
dc.citation.spage217
dc.subject.asfaanimal diseasesen
dc.citation.conferenceTitleProceedings of the International Workshop on the Promotion of Sustainable Aquaculture, Aquatic Animal Health, and Resource Enhancement in Southeast Asiaen


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