Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

3D scans map widespread fish disease

05.03.2014

Seventy-five per cent of antibiotics in Danish fish farms is used to treat fish with enteric redmouth disease. With the help of 3D scans, researchers at the University of Copenhagen have mapped how the fish are infected with the bacterium. The findings were recently published in the scientific publication PLOS ONE.


Enteric redmouth disease is a bacterial infection that can kill fish, but is entirely harmless to humans.

Symptoms typically take the form of a redness or bleeding in and around the mouth of the fish.

“The new scans show us that the fish are infected through their ultra-thin gills,” explains postdoc Maki Otani, the Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences.

Educated in Japan, Maki Otani has supervised the scanning process, where advanced technology and precision combine to form a higher synthesis. For this reason, the research group can now map with extreme precision the bacterial infection (Yersinia ruckeri) causing enteric redmouth disease in fish.

The disease, which reduces fish well being and increases fish mortality in Danish fish farms, is harmless to humans.

The infection pathway

The researchers have scanned the ultra-thin gills of rainbow trout. The gills are a specialised organ whose chief function is to absorb oxygen from the water so the fish can breathe. Only two cell layers separate the outer water from the blood in the fish’s small arteries. The new findings show that the bacterium infects the fish via a specific cell type in the gills.

As little as 60 seconds after the bacterium is introduced into the aquaculture, its presence can be registered in the fish’s bloodstream. The bacterium subsequently infects the fish via its intestine and the lateral line canal– a sensory apparatus running along both sides of the body.

Rare 3D scanner

The University of Copenhagen possesses a so-called OPT scanner (Optical Projection Tomography) – a rare piece of equipment enabling researchers to monitor the infection with unparalleled precision.

“The research findings are presumably the first of their kind and the scanning images exceed our wildest dreams,” explains associate professor Martin Raida, the Department of Veterinary Disease Biology, who is heading the project.

Among other things, he is conducting research in developing vaccines. The Danish fish production industry currently vaccinates its fish, also against enteric redmouth disease, but to date this has not solved the problem. Martin Raida hopes that the new knowledge can contribute to the development of a more effective vaccine against enteric redmouth disease. This will contribute to bring down the amount of antibiotics used and thus reduce the burden on the environment.

Contact:

Maki Otani, mobile: + 45 42 46 88 82
Martin Raida, mobile: + 45 60 66 67 01

| EurekAlert!

Further reports about: Biology bacterial infection blood fish disease function pathway synthesis vaccines

More articles from Agricultural and Forestry Science:

nachricht Wake Forest research confirms controversial nitrite hypothesis
12.12.2014 | Wake Forest University

nachricht Texas Tech’s Sequencing of Cotton A-Genome Could Revolutionize Industry
05.12.2014 | Texas Tech University

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Anzeige

Anzeige

Event News

Smart Cities

08.12.2014 | Event News

European Polymer Congress 2015 in Dresden/Germany

01.12.2014 | Event News

Regional economic cooperation in Central Asia

21.11.2014 | Event News

 
Latest News

Global CO2 emissions increase to new all-time record, but growth is slowing down

17.12.2014 | Ecology, The Environment and Conservation

Bugs life: The nerve cells that make locusts 'gang up'

17.12.2014 | Life Sciences

New class of synthetic molecules mimics antibodies

17.12.2014 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>