Survival of the fittest — or survival of the smallest?

Research done by Sean Rogers, assistant professor in the Department of Biological Sciences at the University of Calgary, shows whitefish in Lesser Slave Lake have evolved to be smaller because of the fishery.

“The net sizes used by the commercial fishery at Lesser Slave Lake have always been designed to catch the biggest and best fish,” said Rogers.

This has left the fish that mature more slowly. The revelation could have an impact on the management practices of the fishery, said John Tchir, senior fisheries biologist for the province.