The subject of whirling disease provides much discussion among trout anglers. Still, many of never heard of this strange sickness that befalls some trout while others appear to be completely immune to it.

What is whirling disease? Certainly to any who have never heard of it, the name is strange. In fact, it is a very good description of one of the major symptons of affected fish, in that often, a trout which carries the parasite will literally whirl around in circles and become very disoriented. As well, affected fish can have darkened tails and spines that are severely disjointed. Gaylon Wayne Wampler, and outdoor photographer, has provided several photographs of fish affected by the disease.

One of the noteworthy facts about this disease is that it affects young fish far more than it does older fish. Mortality rates in some jurisdictions are quite high in trout that carry it, and younger fish are on the decline. It should be noted however, that there remains some controversy amongst biologists as to the real consequences of whirling disease being present in our waters. In the Rocky Mountain Fly Fishing Center's Whirling Disease Facts Page, one Californian pathologist is reported to have indicated that the death rates of affected fish are not all that high. There are others however, that believe that this is a very serious problem and one that must be solved very soon to not only protect our fish, but also to protect those whose livlihoods depend upon a thriving trout fishery. Interestingly enough, there are no reports of the parasite having any affect on humans even after eating fish carrying the disease.

Research is ongoing into the disease and its control. In fact, an organization called appropriately enough, Whirling Desease Foundation was established in 1995 with a mandate to raise necessary funds and support research into the disease. Several studies have been undertaken due to the organization, and continuing research and education programs are offered.

What can anglers do to help? Learning more about the problem is the first step. Second, ensure that your own angling practices will not encourage the spread of the parasite further. The parasite that causes whirling disease can live up to 20, maybe even 30 years in dried mud. Obviously this makes it easy for the parasite to be transported on waders and tires. As well, never transplant fish from one location to another! It is probable that the reason for our whirling disease problems in North America is due to the introduction of European rainbows into American waters in the 1950's. Lets do our best to control the problem and support those who are working zealously to eradicate or control closely the whirling disease problem to ensure our children's enjoyment not only angling, but in having the opportunity to enjoy our natural resources.

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