Decided to short hand the above to make it more understandable. This line of studies has profound impacts on pond mgt for several reasons.

Recent info reveals that genetic change in fish can be very rapid. When I first saw this trend in writing a couple years ago I thought it was crazy. Then more and more examples were reported. Couple that with additional info that people can accelerate this process and you quickly have pond problems on your hand. These rapid changes have been shown to effect reproduction , catchability , aggressiveness , size (metabolic rate) and fitness/condition. See the chart below for an example over just a few years.

Here is 1 on catchability - the chart below shows a 50% reduction in catch rates over 3 generations.



Last edited by ewest; 07/18/17 02:00 PM.