The Life History and Ecology of the Crayfish Cambarus Immunis Hagen

Taxonomic Status of the Species.421 Habitat Preference .422 Reaction to Habitat .422 Time of Activity .422 Burrows and Chimneys .424 Breeding Habits and Life History.425 Mating .425 Oviposition .427 Incubation and Hatching .428 Growth During the First Summer.429 Changes During the First Five Stages .429 Subsequent Molts During the First Summer .431 Increase in Range of Size .431 Growth of the Yearling Group .432 Resumption of Growth in Spring ....432 Summer Molt of the Yearling Group .433 Maturity .433 Mortality Among Adults .433 Propagation and Production .434 Status as a Forage Animal .434 Food Studies .435 Production .436 Natural Enemies .439 Conclusions.....441 References.442