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Aquaculture health
Welcome to the page about Aquaculture health of Engormix; a source of knowledge on Aquaculture health.
In the world of marine mussels and other shellfish bivalves, looks can be deceiving when it comes to health.
"A major problem with bivalve populations is determining whether they're healthy, sick or in-between," said Dr. Helen Gurney-Smith, Research Scientist at Vancouver Island University's Centre for Shellfish Research (CSR).
Most people have heard the expression 'happy as a clam', but the truth is we do not have any "tools" to determine if a clam...
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DNA research at the University of Guelph has provided insight into a perplexing environmental problem on British Columbia's west coast, where fish farms have been blamed for lice epidemics that have devastated wild salmon stocks.
Researchers have long known that fish farms are incubators for lice and that wild salmon stocks in the vicinity of farms, particularly in the Broughton Archipelago off northeast Vancouver Island, have suffered from devastating lice infestations.
But...
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Viral haemorrhagic septicaemia (VHS) is a highly contagious disease of rainbow trout in fresh water, causing great economic loss in the European trout farming industry. In his doctorate, Bjørn Erik Brudeseth presented new findings and methods that explain why some seawater-isolated VHS virus are unable to infect rainbow trout. The VHS virus is known to occur in wild marine fish. The Baltic Sea, for example, has a high incidence of infected fish, in particular...
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As part of the EU funded Fine fish project, Nofima arrange two professional training courses focusing on prevention of malformations in juvenile/adult fish. This workshop is aimed at fish producers, fish health service providers and scientists.
This workshop does not only present results but also provide hands-on training for the benefit of hatchery and juvenile farm operators. The workshop will combine information developed within the project with experience and observations from...
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Researchers funded by the Biotechnology and Biological Sciences Research Council (BBSRC) have gained a key insight into a disease that is devastating the UK's fish farming industry. The researchers have discovered that fish can harbour and spread proliferative kidney disease (PKD), a cause of major stock losses on fish farms, as well as being affected by the infection.
The discovery now paves the way for research to develop effective ways to combat the disease. The research was...
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Infectious salmon anaemia (ISA) is one of the most economically-damaging diseases in Norwegian fish farming industry. It is caused by a marine Orthomyxovirus, the same family that produces the influenza A virus that causes disease in birds and mammals. For his doctorate, Turhan Markussen looked at factors of the ISA virus genes that influence its ability to cause disease in salmon.
Infectious salmon anaemia was first recorded in Norway in 1984 and has subsequently...
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The Ministry of Agriculture, through the Secretariat of Agriculture and Livestock (SAG), last week approved an infectious salmon anaemia (ISA) vaccine developed by a domestic veterinary pharmaceutical company. Sales of the vaccine will begin in June.
The Centrovet laboratory undertook two years of research in full compliance of international standards and invested around USD 6 million in developing the vaccine from a viral strain present in...
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Dr Kenny Black, Head of Ecology at SAMS, co-authored a recent paper investigating the use of biocides for controlling crustacea in fish farms ( Journal of Photochemistry and Photobiology B: Biology 95 (2009) 58-63) .
Farming of salmon has become a significant industry in many countries over the past two decades. A major challenge facing this sector is infestation of the salmon by sea lice. The main way of treating salmon for such infestations...
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Ruth Torill Kongtorp established during her doctorate that a new disease called heart- and skeletal muscle inflammation (HSMI) is a serious infectious disease of farmed Atlantic salmon, with a high potential for transmission. The increasing number of outbreaks of this disease in recent years indicates that it poses a significant threat to Norwegian salmon farming.
HMSI was discovered in 1999, and has since been found in disease outbreaks at many fish farms along the...
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Sea lice found in the Pacific Ocean are very different genetically from sea lice in the Atlantic Ocean, a study team co-led by a University of Victoria researcher has found.
The discovery could have significant management implications for wild fisheries and aquaculture in BC, since it had previously been assumed that research on salmon and louse interactions in the Atlantic directly applied to sea lice everywhere.
"Now we know this may not be the case," says UVic...
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Advanced BioNutrition Corp. (ABN), a leader in providing the aquaculture industry with science-based solutions to improve health and nutrition, announced today that its Chilean strategic partner, Centrovet Laboratories, Santiago, Chile, has obtained provisional registration for a freeze-dried, oral-powder vaccine to aid in the prevention of Salmon Rickettsial Syndrome (SRS) in Chilean salmonid species. The vaccine is delivered in salmon feed by means of ABN's patented...
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A Universiti Malaya Professor has discovered an edible stimulant vaccine to fight White Spot Syndrome Virus (WSSV), a serious shrimp disease which causes losses amounting to billions of US dollars annually. Professor Dr Phang Siew Moi, who is leading the research on the vaccine, said it could trigger the immune system in penaeid prawns towards the WSSV, using the VP28 viral coat protein that could protect the prawn from the deadly disease. She said the prawn was not a...
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If you want politically correct coffee (whether organic or fair trade), there is plenty of choice at the supermarket. But if you are concerned about the fish you eat, it gets a bit harder. A welfare monitor for farmed fish has been developed which can help with this. Like a Big Brother, the system keeps a constant eye on the fish. FAST-TOOL is the name of this instrument, developed in Norway with EU funding. It is really a software programme...
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Experts from Queen's University Belfast are in India today (Monday) to advise the country on how it can reduce parasitic infections which destroy plants and animals.
The biotechonology experts from the University are at the forefront of research into the infections which cost the world economy around $200 billion in lost crop production and $5.3 billion in animal health each year.
A delegation led by Dr Gerry Brennan from the School of Biological Sciences at Queen's...
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DuPont Introduces New Line of Shrimp Pathogen Diagnostic Tests An Easy-To-Use Solution That Brings the Sensitivity of Lab PCR Methods to the Grow-out Pond
DuPont Animal Health Solutions (DAHS) announced a new product line that will bring shrimp-pathogen detection straight to the farm. The DuPontTM Virkon Aquatic Biosecurity Monitoring System provides an integrated, easy-to-use solution for pond-site shrimp pathogen diagnostic testing that detects viruses impacting shrimp health and...
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What's good for human kind is also good for endangered salmon.
A protein biomarker under development to detect traumatic brain injury in humans can also reveal the same injuries in salmon that struggle to migrate in freshwater rivers, according to a study by the Department of Energy's Pacific Northwest National Laboratory.
This is the first time that a human biomarker has been used to determine injury risks in wildlife. The findings, from a 2006 study of juvenile Chinook...
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Farmed cod have recently been hit by a serious disease caused by an unknown bacterium. In his doctorate, Jarle Mikalsen contributed to the identification of this bacterium, now called Francisella philomiragia noatunensis . The disease caused by the bacterium is now called francisellosis and is listed in the national disease register and regulated under the terms of the Norwegian Food Act.
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During his doctoral thesis, Erlend Haugarvoll discovered new aspects of the salmon immune system. His research looked at the immune cells in the gills of salmon and at immune responses to vaccination. A special type of tissue, rich in immune cells, was found in the gills, and new properties of immune cells that produce brown pigment were discovered.
Successful salmon farming in Norway and...
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Salmon farmers in Chile, struggling to eradicate a fish-sickening virus, may be at the start of their worst year yet as the disease spreads and the credit crunch slashes funding, the nation's fishing regulator said.
"It's the hardest crisis they've confronted," Felix Inostroza, Chile's national fishing director, said today in an interview in Santiago. "Everything happened at once."
Chile, the world's second-biggest salmon producer, may cut output more than...
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Yabbies grown in farm dams are susceptible to various parasites and surface fouling that can have a negative effect on their market value. Epistylis and Temnocephala are two of these commonly occurring organisms.
Epistylis
Epistylis is a stalked protozoan that appears as a fluffy growth on the external surface of crustaceans and fish. Epistylis is harmless to the animal unless it...
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