Preparing for Crayfish Surveys

I’ve spent this evening getting Crayfish traps ready for use. It’s incredible that the most widely used traps on the market don’t catch the tiny juvenile crayfish as their mesh size is too big. Scientific studies elsewhere have shown a significant increase in effectiveness is achieve by covering the traps in a 1/4″ mesh. I’ve gone further and am covering 50% of all our the traps in a plastic mosquito mesh. This will allow us to scientifically assess the difference between the OEM traps and those we modify. I just don’t understand why Trappy Traps aren’t made with finer mesh. As…

Source: Ayshire River Trust – Preparing for Crayfish Surveys