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Marine Bioengineering Lab (Prof. Hisae Kasai)
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The lab works to prevent diseases of fish and shellfish, aiming for safe seafood and sustainable aquaculture and stock enhancement.

AboutAbout the lab
Understanding fish diseases to protect aquaculture and stock enhancement
Professor Hisae Kasai's lab studies diseases of fish and shellfish and the safety of seafood from a microbiological perspective.
In the seed production of fish and shellfish (hatchery rearing of juveniles), diseases caused by protozoa, fungi, bacteria, viruses, and other agents occur, and they greatly affect the results of later stocking and aquaculture.
The lab carries out basic research that investigates how these diseases arise, and applied research that uses that knowledge to control the diseases.
As a Reference Laboratory of the World Organisation for Animal Health (OIE) for viral diseases of salmonids, the lab also works on developing diagnostic methods and disease control measures.
Key terms
- Seed production
- Hatching and rearing juvenile fish, shellfish, and similar animals from eggs by human hands, for use in aquaculture or stocking
- Disease control
- Preventing a disease from occurring, or limiting its spread
- Reference Laboratory
- A laboratory recognized by an international organization as a center for the diagnosis of and research on a specific disease
ResearchResearch themes
Diseases that occur in the seed production of fish and shellfish greatly affect the results of stocking and aquaculture. The lab conducts microbiological research to solve these problems, including ensuring the safety of seafood.
*Illustrative imageDiseases in seed production and seafood safety
In the seed production of fish and shellfish, diseases caused by protozoa, fungi, bacteria, viruses, and other agents occur even when rearing water, feed, and facilities are managed. The lab aims to solve these disease problems, together with the challenge of ensuring the safety of seafood as food, through microbiological research.
*Illustrative imageDiagnosis and control of viral diseases of salmonids
As the World Organisation for Animal Health (OIE) Reference Laboratory for salmonid herpesvirus disease, the lab aims to contain and eradicate this disease. It works on developing diagnostic methods for viral diseases of salmonids and establishing control measures.
MembersFaculty
- ProfessorHisae Kasai
- Assistant ProfessorJun Nagata
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Nashua NFH American shad fry tank” Katie Marony/USFWS / Public domain (cropped)
- Diseases in seed production and seafood safety: “Edenton NFH lake sturgeon juveniles trough 2 December 2021” Jimmie Garth/USFWS / Public domain (cropped)
- Diagnosis and control of viral diseases of salmonids: “Smolt (Oncorhynchus masou masou)” Apple2000 / CC BY 3.0 (cropped)
- Related lab (Ijiri Lab): “Japanese Eel (Yakushima)” Ffish.asia / CC BY 4.0 (cropped)
- Related lab (Developmental Biology Lab (Breeding Biology Lab)): “Dojo loach4” Gourami Watcher / CC BY 3.0 (cropped)
- Related lab (Marine Biotechnology Lab): “Moon jellyfish at Gota Sagher” Alexander Vasenin / CC BY-SA 3.0 (cropped)
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