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Colorado Fishing News Back to Colorado Fishing News
WHIRLING DISEASE-RESISTANT TROUT THRIVING IN ARKANSAS RIVER
12/3/2018
Credit:
Bill Vogrin - DNR,
A recent survey by Colorado Parks and Wildlife biologists found rainbow trout thriving in the Arkansas River near Salida offering a hopeful sign for wildlife conservation efforts aimed at overcoming whirling disease, which decimated trout populations in Colorado after its discovery in the 1980s.

These are special rainbows they are the spawn of wild rainbows from the Gunnison River that are resistant to the deadly whirling disease. The disease is caused by a parasite that infects rainbows, leaving them deformed and swimming in circles before it quickly kills the youngest fish.

The disease was introduced in Colorado by a private hatchery in 1987 and it quickly ravaged Colorado’s wild rainbow trout population. By 1997, wild rainbows essentially vanished and brown trout, which are resistant to whirling disease, took over most of the state’s major rivers. CPW aquatic research scientists and biologists have worked ever since to combat whirling disease and re-establish wild rainbow trout in Colorado.


READ THE ENTIRE ARTICLE ON THE COLORADO OUTDOORS WEBSITE:
https://coloradooutdoorsmag.com/2018/12/03/whirling-disease-resistant-trout-thriving/