Abstract
The vomiting reflex is a protective mechanism for the bulk ejection of noxious material, and is common in vertebrates1. Here we show that the thornback ray Raja clavata (Rajidae) can ‘rinse’ its stomach by full gastric eversion, washing small indigestible food particles and sloughed gastric mucosa and mucus out of the upper digestive tract. This may be a widespread mechanism, besides vomiting, for fish to remove noxious material from the stomach.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on SpringerLink
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout

Similar content being viewed by others
References
Andrews, P. L. R., Sims, D. W. & Young, J. Z. J. Mar. Biol. Assoc. UK 78, 1269–1280 (1998).
Andrews, P. L. R. et al. J. Exp. Biol. (in the press).
Borison, H. L. & Fairbanks, V. F. J. Pharmacol. Exp. Therapeut. 105, 317–325 ( 1952).
Naitoh, T. & Wassersug, R. J. Nature 380, 30–31 (1996).
Naitoh, T. et al. Physiol. Zool. 62, 819– 843 (1989).
Naitoh, T., Imamura, M. & Wassersug, R. J. Comp. Biochem. Physiol. 100C, 353–359 (1991).
Wake, M. H. (ed.) Hyman's Comparative Vertebrate Anatomy (Univ. Chicago Press, Chicago, 1979).
Crow, G. L. et al. Copeia 1990, 226–229 (1990).
Budker, P. The Life of Sharks (Weidenfeld & Nicolson, London, 1971).
Beintema, A. J. Nature 352, 480–481 ( 1991).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sims, D., Andrews, P. & Young, J. Stomach rinsing in rays. Nature 404, 566 (2000). https://doi.org/10.1038/35007149
Issue date:
DOI: https://doi.org/10.1038/35007149
This article is cited by
-
Behavioral and visual stress-induced proxies in elasmobranchs
Reviews in Fish Biology and Fisheries (2023)
-
New records on intestinal eversion in a free-ranging nurse shark (Ginglymostoma cirratum) and a free-ranging, breaching-spotted eagle ray (Aetobatus narinari)
Environmental Biology of Fishes (2021)
-
Intestinal eversion in a pelagic shark evokes chase and bite attempts by large-bodied carangid fish
Journal of Ethology (2021)
-
Feeding ecology and trophic level of the banded guitarfish, Zapteryx exasperata, inferred from stable isotopes and stomach contents analysis
Environmental Biology of Fishes (2012)
-
Intestinal eversion in a free-ranging manta ray (Manta birostris)
Coral Reefs (2008)