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.

The Tidal Migrations of Donax variabilis Say

Harry J. Turner, Jr. and David L. Belding
Limnology and Oceanography
Vol. 2, No. 2 (Apr., 1957), pp. 120-124
Stable URL: http://www.jstor.org/stable/2832665
Page Count: 5
  • More info
  • Cite this Item
The Tidal Migrations of Donax variabilis Say
Preview not available

Abstract

The behavior of the beach clam, Donax variabilis, resembles that of Donax semigranosis in that it migrates up and down the beach with the rise and fall of the tide assisted by the wash of the surf. On the rising tide the acoustic shock of the breaking waves stimulates the bivalve to emerge from the sand in advance of the uprush so that the wash carries it up the beach. On the falling tide it ignores the acoustic stimulus and emerges into the back-wash to be carried down the beach. The reactions may be due to an intrinsic rhythm, changes in the water content of the sand, or a trigger-and-memory mechanism.

Page Thumbnails

  • Thumbnail: Page 
120
    120
  • Thumbnail: Page 
121
    121
  • Thumbnail: Page 
122
    122
  • Thumbnail: Page 
123
    123
  • Thumbnail: Page 
124
    124