abstract:Lernaea (also incorrectly spelled Lernea) is a genus of copepod crustaceans commonly called anchor worms, parasitic on freshwater fishes. They mate during the last free-swimming (copepodid) stage of development.
The present paperdeals with the biologyof the parasitic copepod Lernaeapoly-morpha and the acquiredimmunity on the part of the hosts after its infeetion on silver carp and big-head.