Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If you need an accessible version of this item please contact JSTOR User Support

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
DOI: 10.2307/2426371
Stable URL: http://www.jstor.org/stable/2426371
Page Count: 12
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
If you need an accessible version of this item please contact JSTOR User Support
Observations on the Ecology, Reproduction and Growth of the Burrowing Crayfish Fallicambarus (Creaserinus) fodiens (Decapoda: Cambaridae) in North-central Ohio
Preview not available

Abstract

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.

Page Thumbnails

  • Thumbnail: Page 
75
    75
  • Thumbnail: Page 
76
    76
  • Thumbnail: Page 
77
    77
  • Thumbnail: Page 
78
    78
  • Thumbnail: Page 
79
    79
  • Thumbnail: Page 
80
    80
  • Thumbnail: Page 
81
    81
  • Thumbnail: Page 
82
    82
  • Thumbnail: Page 
83
    83
  • Thumbnail: Page 
84
    84
  • Thumbnail: Page 
85
    85
  • Thumbnail: Page 
86
    86