Stomach rinsing in rays

David W. Sims (), Paul L. R. Andrews and J. Z. Young
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David W. Sims: University of Aberdeen
Paul L. R. Andrews: St George's Hospital Medical School
J. Z. Young: University of Oxford

Nature, 2000, vol. 404, issue 6778, 566-566

Abstract: 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.

Date: 2000
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DOI: 10.1038/35007149

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