Thursday , 13 June 2024

Scientists and stakeholders meet to discuss fish health issues

Seated (left to right) are AQD Chief Dr. Joebert Toledo, SEAFDEC Secretary General Dr. Chumnarn Pongsri, AQD Deputy Chief Dr. Teruo Azuma, and BFAR-6 Director Drusila Esther Bayate; with country report presenters and plenary lecturers Dr. Eduardo Leaño (standing rightmost), Dr. Celia Pitogo and Dr. Teruo Miyazaki (standing 2nd – 3rd from left)

Fishfarmers can protect their stocks from disease outbreaks by practicing good aquaculture management. This was the message of the International workshop on fish health management held 1-2 March 2012 in Iloilo City, Philippines. The workshop was organized by AQD with funding from the GOJ-Trust Fund. Total of 222 participants comprised of scientists, researchers and industry stakeholders attended at the workshop.

Aquatic animal diseases are huge problems that are hindering aquaculture production. In China alone, around $1 billion is lost yearly to fish diseases.

SEAFDEC Secretary General Dr. Chumnarn Pongsri noted that the heavy use of chemicals and drugs in aquaculture is a non-sustainable answer to diseases. “Avoid unnecessary use of these drugs, and apply proper withdrawal periods of antibiotics to help keep aquaculture products safe for consumers,” he advised.

Fish vaccination is an option to control diseases, and has been introduced in countries like Indonesia and Philippines. This can prevent the occurrence of potential diseases like streptococcosis, koi herpes virus, and vibriosis. At AQD, vaccines against viral nervous necrosis in pompano, grouper and seabass have been developed.

Other innovative approaches such as RNA interference for silencing gene expressions in viruses, use of lectins to boost the fish immune response, and aptamer technology were also discussed during the workshop. Lectins from some teleosts, for example, are said to be good biomarkers in innate immunity for fish health management. Aptamers on the other hand have the ability to bind to fish viruses; thus, can be used to prevent unwarranted outbreaks of viral diseases.

The workshop also emphasized the need for an enhanced regulation and better monitoring of diseases in accordance with the protocols of the OIE (Office International des Epizooties). Disease reporting is necessary so that countries can provide online reports and access diseases of regional concern.

Workshop participants also identified the gaps on fish health management particularly in accelerating awareness and innovative research for fish pathogens. One of the problems highlighted by Lao PDR and Myanmar was the absence of laboratory facilities capable of performing molecular, histological, and microbial methods to detect pathogens. And in countries like Malaysia, Philippines, Thailand, and Cambodia, there is lack of fish health experts or qualified fish pathologists. The workshop recommends capacity-building activities such as intensive hands-on training on fish pathology; continuous collaboration with relevant agencies; and information sharing to improve fish health management, food security, and aquaculture sustainability.

SEAFDEC Secretary General Dr.Chumnarn Pongsri emphasizesthat both SEAFDEC and thegovernment sector should comeup with measures to ensuresustainable development of theaquaculture industry, withspecific consideration to small-scale fishfarmers. He also urgesscientists and researchers todevelop and simplifytechnologies appropriate to thetarget people
(L-R) Dr. Clarissa Marte and Dr. Yukio Maeno give their impressions on the workshop. Dr. Marte notes that technological and resource capability of staff & laboratories should be increased especially for countries with limited resources. She further suggests that information dissemination should be enhanced through a more advanced IT technology; while Dr. Maeno says that fish health networking is an effective way of disseminating information particularly on the occurrence of fish disease

















Malaya Business Insight editor and writer Mr. Paul Icamina visits the AQD booth

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