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 Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

The Effect of Ambient Light on Blind Cave Crayfish: Social Interactions

Hao Li and Robin L. Cooper
Journal of Crustacean Biology
Vol. 22, No. 2 (May, 2002), pp. 449-458
Published by: Brill on behalf of The Crustacean Society
Stable URL: http://www.jstor.org/stable/1549969
Page Count: 10
  • Read Online (Free)
  • Download ($34.00)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Effect of Ambient Light on Blind Cave Crayfish: Social Interactions
Preview not available

Abstract

This study investigated the social behaviors of blind cave-adapted crayfish and compared them to the behaviors of sighted crayfish. Because blind cave crayfish display phototactic behavior, presumably mediated by the caudal photoreceptors in the sixth abdominal ganglion, we tested whether light, a disturbance in the crayfish's normal cave environment, altered their normal social behaviors. Observations were made in infrared or dim-white light to quantify social interactions. Exposure to white light reduced the amount of interaction time as compared to infrared light. The results revealed that blind crayfish did not exhibit behaviors usually associated with visual displays and posturing (i.e., the raised meral spread was absent). Same-sized individuals, previously housed in isolated conditions for two weeks, were paired. Both individuals tended to tail flip or move apart immediately after initial antennae contact. This is the same behavior observed within the natural cave environment. After repeated interactions between them, the rapid tail flip behavior became less frequent, while avoidance became an automatic reaction. Ethograms were constructed to determine the differences in the observed behaviors between the aggressive and submissive cave crayfish.

Page Thumbnails

  • Thumbnail: Page 
449
    449
  • Thumbnail: Page 
450
    450
  • Thumbnail: Page 
451
    451
  • Thumbnail: Page 
452
    452
  • Thumbnail: Page 
453
    453
  • Thumbnail: Page 
454
    454
  • Thumbnail: Page 
455
    455
  • Thumbnail: Page 
456
    456
  • Thumbnail: Page 
457
    457
  • Thumbnail: Page 
458
    458