188体育

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

Bonamia ostreae is a protozoan parasite infecting oyster species including 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 ostreae except in infected zones where the parasite is present in oysters (known as Confirmed designation areas) and which are under disease controls to contain and prevent further spread, more information can be found here: Listed diseases of fish, molluscs and crustacea and their status - 188体育 (www.gov.uk).

It is a 鈥楲isted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

It does not affect humans.听

How to spot Bonamia ostreae听

Infections are most likely to been seen from autumn and peaking in the winter and early spring.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
• Weak听

How Bonamia ostreae is spread听

Bonamia ostreae is spread through movements of and contact with infected shellfish and contact with contaminated equipment or water. The parasite may be spread directly between infected animals, and infected planktonic shellfish larvae may also contribute to the spread of the parasite.听听听听

Preventing and controlling Bonamia ostreae听听

There is no treatment for Bonamia ostreae.听

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

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 into disease free areas are Bonamia ostreae 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 ostreae, particularly increased mortality and gaping shells. The FHI will investigate and if required will apply disease control measures.听听听听

Further information on Bonamia ostreae听

. 听

Legislation relating to Bonamia ostreae听

2009听听

The listed diseases are in and .听

Who to contact if you suspect Bonamia ostreae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 ostreae 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 ostreae.听

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