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Updated: May 19, 2026

Cancer Borealis Stomatogastric Nervous System Dissection
Published on: March 23, 2009
Removal of an intracoelomic hook via laparotomy in a sandbar shark (Carcharhinus plumbeus)
Alexis Lécu1, Renaud Herbert, Ludwig Coulier
1Parc Zoologique de Paris, Museum National d'Histoire Naturelle, 53 avenue de St. Maurice, 75012 Paris, France. pzpveto@mnhn.fr
Abstract:
A twenty-one-year-old male sandbar shark (Carcharhinus plumbeus) demonstrated signs of chronic weight loss even though its appetite remained unchanged. In addition, the gradual development of a red, circular lesion on its ventral body was noted. After months without any significant changes, a ventral fistula appeared revealing the tip of a wire exposed within its center. The shark was immobilized via intramuscular remote injection through dartgun with etomidate; removed from its exhibit tank; and clinically examined with radiographic imaging, a cell blood count/serum chemistry evaluation, and the use of a metal detector along the body wall. A metallic hook was identified in the coelom about 10 cm cranial to the external fistula. The shark was transferred to an isolation pool for 1 mo. A second immobilization via immersion in eugenol was conducted in order to perform a celiotomy. The hook was located in a liver lobe and was surgically removed. After a prolonged recovery from anesthesia, the shark was released into its primary tank and recovered uneventfully, although some of the skin sutures sloughed prematurely.
