Further Concerns
Kudoa thyrsites (soft flesh
syndrome) is caused by a parasite
that "infects muscle tissue of the fish host and in some cases causes unsightly
white cysts and softening of flesh in fillets . . . In extreme cases infections
of the parasite can result in post mortem myoliquefaction where the muscle
tissue takes on a jelly-like condition."[1],[2]
In addition to concerns about environment impacts, this parasite is of strong
economic concern to industry with the Department of Fisheries and Oceans (DFO)
financing research for its suppression.[3]
Use of high-powered (1000 watt) lights to delay maturation of the fish and, thereby,
increase growth. The lights
attract wild fish, increasing the chance of predation. The use of high-powered
lights in the marine environment (i.e. "pit-lamping") is contrary to
regulations in the Fisheries Act.
[4]
Introduction of additional toxins into the environment as a result of using anti-foulants on nets e.g. the copper based "Flex-C".[5],[6],[7]
Potential amplification of fat-soluble toxins.[8],[9]
Bycatch of wild species such as black cod, herring and pink salmon smolts when Atlantic salmon are being transported and harvested.[10]
Use of colouring additives in the feed of farmed Atlantic salmon.[11],[12]
The potential future use of genetically modified Atlantic salmon.[13]
[1] http://www.puresalmon.org/pdfs/diseases.pdf
[2] http://hmsc.oregonstate.edu/classes/MB492/kudoawhipps/descrip.htm
[3] http://www.bclocalnews.com/vancouver_island_north/campbellrivermirror/news/50396782.html
[4] http://www.davidsuzuki.org/files/Leggatt_reportfinal.pdf
[5] http://www.bellona.org/aquaculture/artikler/Copper
[6] http://www.vancouversun.com/Toxic+contamination+will+linger+Island+salmon+farm+site+government+finds/1929149/story.html
[7] An Introduction to Aquaculture - A primer on the industry for B.C. First Nations http://fnfisheriescouncil.ca/index.php/mission-a-work-of-council/working-groups/aquaculture-working-group/557-nasapi-workplan-dec-2009
[8]http://www.puresalmon.org/pdfs/human_health.pdf
[9] http://www.edf.org/page.cfm?tagID=15802
[10] http://www.saveoursalmon.ca/news/2010-Q2/ottawa-takes-over-prosecution-of-salmon-farm-284/
[11] http://foodsafety.k-state.edu/articles/533/canthaxanthin_factsheet.pdf,
[12] http://www.puresalmon.org/pdfs/human_health.pdf
[13] http://www.saveoursalmon.ca/news/2010-Q2/genetically-altered-salmon-get-closer-to-the-table-322/
