Gastrointestinal Foreign Body in a White Spotted Bamboo Shark (Chiloscyllium plagiosum)
A female adult white spotted bamboo shark (Chiloscyllium plagiosum), housed in a touch tank environment with several conspecifics was found with a string-like foreign material hanging from its gills and proceeded to become anorexic. Initial physical examination, CBC and chemistry panel were all within normal limits. Initial radiographs and gastrointestinal barium contrast study results suggested a partial gastrointestinal obstruction at the level of the spiral colon. Initial treatment consisted of mineral oil and tube feeding. Due to continued unchanged radiographic findings and persistent anorexia, a coelomic exploratory surgery was elected. The shark was anesthetized with buffered tricaine methanesulphonate (MS-222). Surgery revealed a perforation within a portion of necrotic bowel at the level of the distal spiral colon. A mass of plant material was found at the site of necrosis and may have been the cause of the obstruction. Resection and anastomosis of the compromised bowel were performed. Postoperative care included ceftazidime (22mg/kg), meloxicam (0.2mg/kg) and oral tube feeding of a critical care piscivore diet. Despite supportive care, the shark showed persistent regurgitation and weight loss over the following month. A complete blood count and chemistry panel following surgery showed moderate anemia and signs of a low-grade infection. A brief endoscopic procedure was performed to visualize the coelom and reappose the dehiscing incision. Two weeks following the second procedure, the shark’s condition declined and euthanasia was elected. Gross necropsy revealed intestinal stenosis and an inflamed spiral colon along with coelomic adhesions of the liver and ovary.