Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

First incidence of koi sleepy disease in Austria

16.06.2015

Carp edema virus, also known as koi sleepy disease (CEV/KSD), is a special form of sleepy disease affecting koi and common carp. Long known only in Japan, the disease was recently detected in Europe. An infection with the virus causes lethargic and sleepy behaviour in the fish. In up to 80 percent of the cases, the infection is fatal. Researchers at the Vetmeduni Vienna, recently identified the disease in Austria, publishing their results in the journal Transboundary and Emerging Diseases.

CEV/KSD is an infectious disease that was first reported in Japan in the 1970s. Infected fish typically lie at the bottom of the ponds exhibiting extreme apathy. Typical symptoms include sunken eyes, dermatological changes and swollen gills. Serious cases of the disease affect the gill tissue to such a degree that it also impedes oxygen delivery.


Mucous lesions in an infected carp.

Photo: Bartolomeo Gorgoglione/Vetmeduni Vienna


Necrotic gill tissue of a diseased koi.

Photo: Eva Lewisch/Vetmeduni Vienna

Virus spreads across in Europe

The disease has since been detected in koi in Germany, France, the Netherlands and other European countries. In England the virus was also found common carp. Diagnostic work by Eva Lewisch and her colleagues at the Clinical Division of Fish Medicine at the University of Veterinary Medicine, Vienna, has now also revealed the disease among koi and common carp in Austria.

“Initially we were unable to find a cause for the serious illness in the carps using routine diagnostic tests. Molecular detection revealed that we were looking at an infection caused by the koi sleepy disease virus,” says Lewisch.
“The pathogen most likely originates from Asia, where the disease has been known for a long time. Which type of pathogen we are dealing with is not completely clear yet. Electron microscopy indicates that the carp edema virus could be a smallpox-like virus”, says Lewisch.

Koi sleepy disease present in Austria for longer than believed

An analysis of archived genetic material revealed that koi sleepy disease has been present in Austria since at least 2010.
“Every spring, we observe an increased mortality of carp. Koi sleepy disease very likely is playing a role,” Lewisch believes.

Water temperature and stress a factors

Lewisch believes that the infection could be widespread among koi and carp stock. Outbreaks are caused by environmental factors such as water temperature and stress conditions. In Europe, carp live in water with temperatures ranging between 7 and 15°C. In Japan, the typical water temperature of koi ponds is between 15 and 25°C. European carp apparently fall ill at lower temperatures than koi in Asia. “We must consider the possibility that the virus has mutated and that it has adapted to European conditions,” says Lewisch.

Great international interest

“Up until a few years ago, almost nothing was known about the spread of the disease in Europe. There were only scattered reports from national veterinary news sources,” Lewisch says. This September, a workshop on the subject of KSD/CEV is planned at the conference of the European Association of Fish Pathologists (EAFP). Experts from all over Europe will discuss the latest developments and debate possible measures for an international fight against the disease.

Global koi trade promotes spread of virus

“The global koi trade poses a real danger for the spread of viral infections and other diseases,” Lewisch points out. “Introduced infections can represent a threat for local stock of common carp. One such example is the koi herpes virus (KHV). This notifiable disease, the presence of which has been documented since the 1990s, causes immense economic damage to stock of common carp all over the world.”

Service:

The article „Carp Edema Virus/Koi Sleepy Disease: An Emerging Disease in Central-East Europe“ by E. Lewisch, B. Gorgoglione, K. Way und M. El-Matbouli was published in Transboundary and Emerging Diseases. DOI: 10.1111/tbed.12293
http://onlinelibrary.wiley.com/doi/10.1111/tbed.12293/epdf

About the University of Veterinary Medicine, Vienna
The University of Veterinary Medicine, Vienna in Austria is one of the leading academic and research institutions in the field of Veterinary Sciences in Europe. About 1,300 employees and 2,300 students work on the campus in the north of Vienna which also houses five university clinics and various research sites. Outside of Vienna the university operates Teaching and Research Farms. http://www.vetmeduni.ac.at

Scientific Contact:
Dr. Eva Lewisch
Clinical Unit of Fish Medicine
University of Veterinary Medicine Vienna (Vetmeduni Vienna)
T +43 1 25077-4700
eva.lewisch@vetmeduni.ac.at

Released by:
Susanna Kautschitsch
Science Communication / Public Relations
University of Veterinary Medicine Vienna (Vetmeduni Vienna)
T +43 1 25077-1153
susanna.kautschitsch@vetmeduni.ac.at

Weitere Informationen:

http://www.vetmeduni.ac.at/en/infoservice/presseinformation/press-releases-2015/...

Dr. Susanna Kautschitsch | idw - Informationsdienst Wissenschaft

More articles from Life Sciences:

nachricht Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery
20.01.2017 | GSI Helmholtzzentrum für Schwerionenforschung GmbH

nachricht Seeking structure with metagenome sequences
20.01.2017 | DOE/Joint Genome Institute

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Traffic jam in empty space

New success for Konstanz physicists in studying the quantum vacuum

An important step towards a completely new experimental access to quantum physics has been made at University of Konstanz. The team of scientists headed by...

Im Focus: How gut bacteria can make us ill

HZI researchers decipher infection mechanisms of Yersinia and immune responses of the host

Yersiniae cause severe intestinal infections. Studies using Yersinia pseudotuberculosis as a model organism aim to elucidate the infection mechanisms of these...

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Sustainable Water use in Agriculture in Eastern Europe and Central Asia

19.01.2017 | Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

 
Latest News

Helmholtz International Fellow Award for Sarah Amalia Teichmann

20.01.2017 | Awards Funding

An innovative high-performance material: biofibers made from green lacewing silk

20.01.2017 | Materials Sciences

Ion treatments for cardiac arrhythmia — Non-invasive alternative to catheter-based surgery

20.01.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>