188体育

颁辞苍迟别苍迟蝉听

1. How to spot Bonamia exitiosa
2. How Bonamia exitiosa is spread
3. Preventing and controlling Bonamia exitiosa
4. Further information on Bonamia exitiosa
5. Legislation relating to Bonamia exitiosa听听
6. Who to contact if you suspect Bonamia exitiosa

Bonamia exitiosa is a protozoan parasite infecting several oyster species, in particular the native (or flat) oyster (Ostrea edulis).听听

Information on susceptible and vector species can be found here: Susceptible and vector species - 188体育 (www.gov.uk)

Great Britain is free from Bonamia exitiosa, and it is a 鈥�listed鈥� (also referred to as 鈥榥otifiable鈥�) disease which you are legally obligated to report immediately to the Fish Health Inspectorate (FHI), Cefas. Fish Health Inspectorate - 188体育 (www.gov.uk)听

In 2011 Bonamia exitiosa was detected in a sample of native oysters collected from a trader operating in Cornwall. The affected area was subject to controls and extensive surveillance and retesting, all subsequent samples were negative, and controls lifted in 2013. Since then, there have been no further outbreaks of Bonamia exitiosa in the UK.听

It does not affect humans.听

How to spot Bonamia exitiosa听

Signs of the disease can include:听

• Increase of dead / empty shells听
• Gaping shells which don鈥檛 close when touched or when exposed to air听
• Gills can appear eroded.听

How Bonamia exitiosa is spread听

Bonamia exitiosa is spread through movements of and contact with infected shellfish and contact with contaminated equipment or water. Infected shellfish may release infective particles, spreading the parasite directly from host to host, and infected planktonic shellfish larvae may also contribute to the spread of the parasite.听听听

Preventing and controlling Bonamia exitiosa听听

There is no treatment for Bonamia exitiosa.听

Prevention is the best approach to disease control. You can protect your shellfish by being aware of the signs of Bonamia exitiosa and other serious diseases and checking stock health regularly. Implement good husbandry and biosecurity practises.听

Further information on biosecurity measures plans, guidance and templates can be found here: Biosecurity Measure Plans - Information and Templates - 188体育 (www.gov.uk)听

You must be sure any shellfish introduced are Bonamia exitiosa free. Do not buy shellfish of unknown origin. Follow the rules on moving aquatic animals: Aquatic animal health and movements guides - 188体育 (www.gov.uk)听

You must report it to the FHI immediately if you notice or become aware of shellfish showing any of the signs of Bonamia exitiosa, particularly increased mortality and gaping shells. The FHI will investigate and if required apply disease control measures.听听听

Further information on Bonamia exitiosa听

听听

Legislation relating to Bonamia exitiosa听

2009听听

The listed diseases are in and .听

Who to contact if you suspect Bonamia exitiosa听听

If you suspect or know of a listed disease of fish and shellfish in England and Wales, you must report it immediately to the Fish Health Inspectorate (FHI), Cefas. You must also tell the FHI immediately if you know or suspect that increased mortality has occurred.听听

Under the Aquatic Animal Health (England and Wales) Regulations 2009 it is a legal obligation to report suspicion of Bonamia exitiosa in any farmed or wild shellfish to the FHI. It is an offence under the Regulations to fail to inform the FHI of suspicion of Bonamia exitiosa.听

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