Speckled Lake Trout Hamilton
Wednesday October 13 2010
Lake Trout (Salvelinus namayoush)
We are fortunate to live near Hamilton Harbour where fishermen congregate at this time of year for sport fishing. Hamilton Harbour (Burlington Bay) lies at the western tip of Lake Ontario and is separated naturally from the Lake by a sandbar. It is the largest naturally protected harbour on western Lake Ontario. Its 500 sq. km watershed is drained by three major tributaries – Grindstone, Spencer and Red Hill creeks. Doug has been having daily conversations with the local fishermen. Some are kind enough to supply helpful fishing tips. Others keep Doug informed of the upcoming Lake Trout arrivals. For example, one fisherman told Doug that today was his First Rainbow trout of the season.Terry and Glenn both fish at the entrance to Cootes Paradise on the Pier.
Biologists look at the health of Lake Trout as this is an indicator of a healthy ecosystem and good water quality. Most of the studies on Lake Trout centre on fish toxin contamination. For example, the University of Toronto, Environment Canada, and MOE did an assessment of long-term concentration trends in sport fish, such as Lake Trout, as they are important for evaluating progress toward the goal of reducing harmful pollutants entering the Great Lakes. Researchers identified Hg (Mercury), organochlorine pesticides, Dechlorane Plus, PCBs,polychlorinated dioxins, brominated flame reradants (PBDEs), PCDDF and fluorinated chemicals. Researchers found perflurorinated sulfonates and carboxylates, has increased or exhibited more variable tends over time. The other study by Clarkson University in N.Y. also presented fish tissue from all five Great Lakes besides fish composites for contaminants , or , fish toxins.