Video Recordings: Fish Health Section Webinar 4 "Small and Terrible! Significant Bacterial Diseases in Aquaculture"

The Fish Health Section (FHS) of the Asian Fisheries Society (AFS) has organized the fourth webinar series on the path to the 11th Symposium on Diseases in Asian Aquaculture (DAA11).  This webinar focused on significant bacterial diseases in aquaculture, and was held virtually on 8 December 2021 in Bangkok, Thailand.  It was attended by 209 participants from 20 countries and territories around the world. 

Aquaculture accounts for about half of the world’s supply of fish and aquatic species. Approximately 90% of the global aquaculture production is from the Asia-Pacific region. Fish farming in developing countries provides domestic food security and supports rural livelihoods with the production of high value fish destined for export. Fish and aquatic species play a key part in global food security by providing nearly 17% of animal protein eaten by people.  Aquaculture production is often beset by problems including infectious diseases, which are by far the greatest limiting factor to expanding aquaculture production.

Infectious diseases are caused by pathogenic microorganisms that are present in the environment or carried by other fish/carriers.  One of these are bacteria which are ubiquitous in the aquatic environment.  Diseases caused by bacteria are often internal or systemic infections. Typically fish infected with a bacteria will have haemorrhagic spots or ulcers along the body wall and around the eyes and mouth. They may also have an enlarged, fluid-filled abdomen, and protruding eyes. Bacterial diseases can also be external, resulting in erosion of skin and ulceration.  Bacterial diseases are one of the main causes of production losses in the culture of important fish species (e.g. enteric septicaemia of catfish caused by Edwardsiella ictaluri) as well as shrimp species (e.g. luminous virbriosis and AHPND of shrimps).

In this webinar, renowned experts in the region were invited to talk about significant bacterial diseases in aquaculture, their infection mechanisms and how the infected hosts respond to such infections.  Video recordings and pdf copy of the presentations can be accessed by clicking the links below: 

  • Opening Session
  • "Overview of Bacterial Diseases of Aquatic Animals" by Indrani Karunasagar of Nitte University, India. Prof. Karunasagar is a life member of FHS-AFS, attended all the FHS conferences for which the FHS gave her a memento as recognition at the conference in Thailand. She has a great interest in fish and shrimp diseases and has been working on developing molecular diagnostics and management measures particularly vaccines and alternatives such as bacteriophages and probiotics. She has  been a member of FAO drafting group on the use of PCR as a diagnostic tool. She has a particular interest in "Antimicrobial resistance and One health". Her special contribution has been in the area of "Public health microbiology, Food safety, and Biotoxins".
  • "Relationship between shrimp gut health, microbiota and AHPND" by Han-Ching Wang of National Cheng Kung University, Taiwan. Prof. Wang is a Distinguished Professor in the Department of Biotechnology and Bioindustry Sciences, and University Library Curator at National Cheng Kung University (NCKU), Taiwan. Her research focusses on shrimp diseases mainly the bacterial disease in particular acute hepatopancreatic necrosis disease (AHPND) pathogenesis. She extensively used integrated systems-biology and omics approach to elucidate the role of environment, microbiota and understand the molecular mechanisms involved in host-pathogen interaction. Some of her research findings have been used in the shrimp industry for developing biosecurity management plans. She has won several honors and awards for her hard work and perseverance in aquaculture research.
    PDF
  • "The Gut as the First Line of Defence Against Bacterial Diseases: Comparing Fish and Shrimp" by Pikul Jiravanichpaisal of Manit Genetics, Thailand. Dr. Pikul is working as a Laboratory Manager at Manit Genetics.  She has a PhD in Aquatic Animal Histopathology from Mie University, Japan and a PhD in Invertebrate Immunity, Uppsala University, Sweden. Prior to joining Manit Genetics, she worked as Senior Researcher at FishVet Group Asia, and BIOTEC, NSTDA, Thailand. Dr. Pikul has more than 30 years experience working in crustacean microbiology, histopathology, and immunology.
    PDF
  • Closing Session


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