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Observations on the Ecology, Reproduction and Growth of the Burrowing Crayfish Fallicambarus (Creaserinus) fodiens (Decapoda: Cambaridae) in North-central Ohio
M. James Norrocky
The American Midland Naturalist
Vol. 125, No. 1 (Jan., 1991), pp. 75-86
Published by: The University of Notre Dame
Stable URL: http://www.jstor.org/stable/2426371
Page Count: 12
You can always find the topics here!Topics: Crayfish, Female animals, Eggs, Ecological life histories, Burrowing, Juveniles, Ova, Mating behavior, Species, Embryos
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Breeding (Form I) and nonbreeding (Form II) males were present throughout the year. Occupancy of the same burrow by Form I males and females occurred from April to late October. Eggs were extruded, developed eyed embryo stage by mid-October and overwintered in this condition. Hatching occurred in late March to mid-April. Subadults in November were 20 mm-30 mm carapace length (CL). Molting to adult occurred in the following summer or autumn. Maximum age was over 6 yr and maximum size was 49.3 mm CL. Growth per molt was quite variable; adults averaged 1.39 mm CL. Burrow temperature ranged from near 2 C in February to near 22 C in August at a depth of 106 cm. Coinhabiting and burrow-sharing were inter- and intraspecific, involved members of the same or opposite sex and on occasion involved more than two crayfish.
The American Midland Naturalist © 1991 The University of Notre Dame