Bills, T. D., and Marking, L. L., 1988, Control of nuisance populations of crayfish
with traps and toxicants: The Progressive Fish-Culturist, v. 50, no. 2, p. 103-106.

Abstract:

Crayfish have long been a nuisance in fish-rearing ponds at fish hatcheries. The
rusty crayfish (Orconectes  rusticus ) has displaced endemic species and caused
serious declines of aquatic plants in some ponds and lakes in  the midwestern USA.
The authors attempted to evaluate the effect of intensive trapping on a crayfish
population  and to identify a selective chemical control agent and evaluate its
effectiveness under field conditions. A crayfish  population in a small pond was
suppressed but not eliminated by trapping: adults were effectively harvested but 
efficiency diminished sharply as the population declined. Of 19 chemicals tested as
possible control agents for  crayfish, a synthetic pyrethroid (Baythroid) was by far
the most toxic; 25  mu g/L produced a complete kill of  crayfish in the pond and was
also the most selective for crayfish in laboratory tests.

Keywords:

pest-control, trap-fishing, pesticides, Orconectes-rusticus, pond-culture, USA,
chemical-control, toxicants, fish-culture