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.

Locomotor Activity Patterns of the Roman Garden Snail (Helix Pomatia L.) in Light and Dark Conditions

Orin G. Gelderloos
The American Midland Naturalist
Vol. 101, No. 1 (Jan., 1979), pp. 218-222
DOI: 10.2307/2424915
Stable URL: http://www.jstor.org/stable/2424915
Page Count: 5
  • Read Online (Free)
  • 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.
Locomotor Activity Patterns of the Roman Garden Snail (Helix Pomatia L.) in Light and Dark Conditions
Preview not available

Abstract

Locomotor activity of the Roman garden snail (Helix pomatia) was recorded in constant dark (DD), constant light (LL) and a light/dark cycle (LD 12: 12) by means of individual activity chambers. In conditions of LD 12: 12 a distinct activity rhythm coincided with the light/dark cycle; most activity was nocturnal. The laboratory recordings correlated well with field observation. The snails responded to light onset with a burrowing or light-avoidance response; a distinct response to dark onset was not observed. No rhythmic patterns of activity were found in either DD or LL. It is possible that activity in this species may be stimulated or inhibited by several environmental factors such as light, moisture and mechanical vibrations. It is suggested that the lack of an endogenous activity rhythm under constant conditions may be advantageous for Helix pomatia.

Page Thumbnails

  • Thumbnail: Page 
218
    218
  • Thumbnail: Page 
219
    219
  • Thumbnail: Page 
220
    220
  • Thumbnail: Page 
221
    221
  • Thumbnail: Page 
222
    222