Issue Cover image


Freshwater Crayfish 12(1): 915-916 (1999)


Download: PDF (689 KB)

Foraging activity in the white-clawed crayfish Austropotamobius pallipes

Acquistapace P and Gherardi F  e-mail link

Published Online:


The foraging activity of the white-clawed crayfish, Austropotamobius pallipes, was studied in the Fosso di Farfereta, 40 km from Florence, Italy. On the experimental pond, one week before the beginning of the observations, 77 crayfish were sexed, measured and then marked with numbered plastic tags glued to their cephalothorax. The observations were made using a 20 m2 grid (50 cm2 quadrats), which was positioned in the pond, at the water surface. The area was illuminated by six red 15 Watt bulbs supplied by a battery. The movement of a total of 60 specimens was recorded for 90 min (at the maximum) in 8 phases of observation by three researchers, starting from dusk, during July, August and September. Every two minutes, for each crayfish the behaviour performed and the substrate occupied were also recorded. In a sample of 25 specimens sacrificed in the same period, gut fullness, the items (from animal and/or vegetable sources) contained in the gut and the percentage of carbon and nitrogen of the gut content were evaluated, comparing sizes and sexes.

Supplemental Documents

  • There are no supplementary documents for this article

CrossRef Logo

Cited By


How to Cite

Acquistapace P and Gherardi F. (1999). Foraging activity in the white-clawed crayfish Austropotamobius pallipes. Freshwater Crayfish 12(1):915-916. doi:



Author Information

Authorship information for this paper are currently unavailable.


Publication History

   Manuscript Submitted:

   Manuscript Accepted:

   Published Online:

   Published in Print:



Funding Information

No specific funding statement is available for this article.






Member Login

Forgot Your Password?

Recover PW

Enter the e-mail address you used to
create your IAA account.
Return to Login
Back to Top