The Current How two parasites are threatening PEI’s oyster industry
Nov 17, 2025
Justin Palmer, co-owner of JP Oysters in Prince Edward Island, shares insights on the alarming loss of oysters due to invasive parasites. Having experienced a devastating 1.2 million oyster loss, he highlights the emotional toll on farmers and the economic fallout, estimating a $600,000 hit. Palmer discusses the parasites' rapid spread and impact, the potential benefits and risks of importing resistant seed, and the urgent need for government support. He encourages listeners to advocate for local oysters as the industry grapples with these challenges.
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Massive Oyster Losses Hit One Farm
- Justin Palmer has lost about 1.2 million oysters, valued around $600,000.
- He reports roughly 30% more deaths after sinking cages and fears worse losses in spring.
Parasites Plus Warm Water Accelerate Deaths
- MSX and Dermo weaken oysters and make them less able to tolerate warmer waters.
- Young seed are already showing ~30% mortality, threatening the three-year growth cycle to market.
Outbreak Originated In Bideford River
- The outbreak began in Bideford River and has spread widely across PEI rivers.
- Justin says the parasites are now pretty well in every river on the island.