Case of disease deadly to oysters confirmed in Nova Scotia

A new disease has been discovered in Nova Scotia that is affecting oysters but does not pose any health risks to humans. Dermo, caused by the parasite Perkinsus marinus, is one of two diseases impacting oysters in the Maritimes. The other disease, MSX, was recently found in P.E.I. and has previously devastated oyster production in the Bras d’Or Lake.

The Canadian Food Inspection Agency (CFIA) announced that dermo has been detected in oysters from Merigomish in Pictou County. While dermo does not pose a threat to human health or food safety, it can lead to increased oyster mortality and decreased growth rates. The CFIA, along with Nova Scotia’s Department of Fisheries and Aquaculture, will be working with producers, harvesters, and partners to monitor the situation and take necessary actions to prevent the spread of the disease.

This is the second case of dermo in Canada, following a confirmation in New Brunswick last week. The CFIA’s website states that dermo is highly infectious among oysters and can easily spread to oysters between one to three years of age. Mortality rates in oysters affected by dermo can range from 50 to 70 percent.

Rod Beresford, an associate professor at Cape Breton University, mentioned that it is still early to determine the impact of the parasite on the province’s oyster industry. He emphasized the importance of monitoring oyster sites and products, especially with the potential impact of climate change on the spread of diseases among oysters.

Despite the challenges faced by oyster farmers, consumers can still enjoy oysters without any concerns about their safety. Oysters remain a significant economic driver, particularly in rural Atlantic Canada. Beresford encouraged people to continue enjoying oysters and assured them that they are safe to eat.

In conclusion, the discovery of dermo in Nova Scotia highlights the importance of monitoring and taking necessary actions to protect the oyster industry. By working together with stakeholders and keeping a close eye on oyster health, the industry can continue to thrive while ensuring the safety of its products for consumers.