Thread: Didymo
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Old September 22nd, 2006, 08:05 PM posted to rec.outdoors.fishing.fly
Wolfgang
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Default Didymo


"PRM" wrote in message
.. .


"Wolfgang" wrote in message
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"PRM" wrote in message
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Long time lurker surfaces to ask a question.

Any one familiar with Didymo?

There are several tailwaters in the Southeast where I fish that have
been invaded and there does not seem to be much concern about it.

I've googled it and gotten the basic info which is this is an invasive
algae that threatens a lot of insect life in trout water.

Has there been discussion in this group that I have missed?


Never heard of it. To the best of my recollection there's been no
previous mention of it here. How's about you give us a summary?

Wolfgang

It's an invasive algae that has done a lot of damage to trout water in New
Zealand. It is spreadly rapidly in the US, although so far it seems
confined to tailwater types of streams.

Fisherman are spreading this algae. The suspected tranmsission is in the
felt of our wading boots.

Here are a couple of web sites you can look at for info.

http://www.epa.gov/Region8/water/events.html

http://www.fly-fishing-guides-new-ze....nz/didymo.htm

The folks in New Zealand seem to be taking this the most seriously. As a
fisherman in the south who depends on tailwaters for a lot of trout
fishing this is a serious wake up call.

There has been one river already very badly infected, but I can't find the
article on it. I THINK it was the Rapid River, in SD. A self sustaining
brown trout population was wiped out.

Something to keep you eye on at least. At the very least find out to
recognize this threat and how to clean your equipment if you come into
contact with it. I am surprised that there is not more info available.


Thanks. I did a brief Google check and haven't found any evidence of its
spread into the upper Great Lakes region yet.

Wolfgang