Posted 02 June 2014 - 03:39 PM
Forage base is very good in the form of plankton, particularly waterfleas. Grass carp keep the macrophytes down. Problem is the crayfish are causing ponds to leak because ponds were not properly lined with clay. Virilus is not a major burrower yet they still penetrate the claypan even though they are not getting much more than a foot from the sediment-water interphase. We do not know actual production rate / standing crop but it is pretty good for a crayfish production pond based on numbers caught when running a corner seine.