WILD ATLANTIC SALMON EXPOSED TO SEA LICE FROM AQUACULTURE SHOW REDUCED MARINE SURVIVAL AND MODIFIED RESPONSE TO OCEAN CLIMATE
July 4, 2020
Impacts on marine survival of Atlantic salmon Salmo salar include sea lice Lepeophtheirus salmonis infestation from coastal aquaculture, and ocean climate forcing. These effects may interact because infestation compromises smolt growth and body condition, and thus response to environmental conditions. We hypothesized that migrating smolts exposed to lice from salmon farms would show (i) reduced one sea-winter (1SW) returns to natal rivers and (ii) a shift in relationships between ocean climate and returns. Annual counts of 1SW fish were studied from ten rivers in Ireland, including five “control” systems without salmon aquaculture. Most counts showed a downward trend, consistent with declines in Atlantic salmon populations. Rivers with aquaculture showed lesser returns (mean 33%, range 19–46%) in years following high lice levels on nearby salmon farms. The level of likely lice pressure also modified how annual 1SW returns varied with ocean conditions. Returns to control rivers showed a weak negative relationship with the Atlantic Multi-decadal Oscillation (AMO) in the late summer (September) of the out-migrating year. This negative AMO effect became much stronger for fish migrating in low lice years but was not evident for high lice years. Smolts experiencing mild-to-moderate lice infestation may show greater sensitivity to ocean warming.
November 3, 2019
Artifishal is a film about people, rivers, and the fight for the future of wild fish and the environment that supports them. It explores wild salmon’s slide toward extinction, threats posed by fish hatcheries and fish farms, and our continued loss of faith in nature.
VOCM OPEN LINE AQUACULTURE SHOW
October 12, 2019
More interest in the latest fish kill on the South coast. Listen to this open line podcast from yesterday.
SOUTH COAST SALMON FARM DIE OFF
October 9, 2019
Today on CBC’s “The Broadcast” host Jane Adey had some very interesting information on about the Hr. Breton salmon mess. What a rep from Mowi had to say was expected, of course, (basically “Nothing wrong with what is going on”). However Biologist and sea-bird expert from Memorial University, Ian Jones, certainly wasn’t agreeing with the tripe being fed us by the Mowi Rep.
Here’s the link…give it a listen!
More on the latest developments can be found on the CBC Fisheries Broadcast podcast page.
ENGAGEMENT SESSION INVITATION FOR THE FEDERAL AQUACULTURE ACT PROPOSAL
May 15, 2019
The development of a federal Aquaculture Act of limited scope that respects federal, provincial and territorial jurisdiction was announced at the December 4, 2018, Canadian Council for Fisheries and Aquaculture Minister’s (CCFAM) meeting. The federal legislation will support the development of a more holistic and environmentally sustainable approach to aquaculture management and offer greater consistency and certainty for industry.
In the last couple years, Fisheries and Oceans Canada (DFO) conducted engagement sessions on multiple initiatives, including an aquaculture act. Feedback on aquaculture management was also obtained during summer 2018 through the Treasury Board Secretariat of Canada (TBS) Regulatory Review of the Agriculture and Agri-food Sector.
Building on input received during this previous engagement, DFO invites you to a meeting to gather further advice and direction on the future Act and it’s proposed content. The meeting is scheduled for May 21, 2019, from 9:00 a.m. – 12:00 p.m. (NDT) at the Courtyard by Marriott (131 Duckworth Street) in St. John’s, Newfoundland and Labrador. For those that cannot attend in person, you may join the discussion via telephone (Toll-free dial-in number: 1-877-413-4791 – Conference ID: 6112696). Meeting materials will follow.
Please email AquacultureConsultations.XMAR@dfo-mpo.gc.ca to confirm your participation by May 17, 2019.