Fishing with Rod Discussion Forum
Fishing in British Columbia => General Discussion => Topic started by: clarki on September 12, 2018, 10:01:07 AM
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Interesting article about the kokanee collapse in Kootenay Lake, Gerrard rainbows, and the genetic biodiversity of trout in the lake
http://www.gofishbc.com/Blog/Science-and-Research/DNA-Confirms-Gerrard-Trout-Smaller,-but-Population.aspx?utm_source=The+DNA+results+are+in+for+the+Gerrard+rainbow+trout&utm_campaign=The+DNA+Results+Are+In+For+The+Gerrard+Rainbow+Trout&utm_medium=email
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Was wondering if they compared Girrard trout DNA to steelhead
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We've definitely had many smaller rainbow over the years now.
I had read somewhere that some kokanee had a virus, and it killed off significant numbers in Kootenay Lake. Can't remember the exact details, and not sure if there is any truth to it.
Certainly still some kokanee around as I see spawners in a west arm creek when I happen to pass through the area in the early fall.
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There was a virus that infected most if not all of the Kokanee spawning grounds about 10 years ago. There was a huge decline in Kokanee after that. The government has stepped up and they are rebuilding a lot of the spawning grounds supposedly. Not as many Gerard’s around either but lots of big bull trouts. Hit bulls all day in the channel where the ferry is crossing.
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Was wondering if they compared Girrard trout DNA to steelhead
As far as I know interior rainbow and steelhead are genetically more closely related to Columbia River redbands than to coastal steelhead. That would likely include Gerrards.
The same is true for IF coho - more closely related to Columbia River coho than coastal coho.