Two calculi were found in the urogenital sinus of a 70 kg female sand tiger shark (Odontaspis taurus). The calculi were white in color, rough surfaced, and spherical in shape. Crystallographic examination revealed that they were composed of magnesium ammonium phosphate hexahydrate (80% struvite) and calcium phosphate (15% carbonate apatite). Approximately 5% of the stone matrix consisted of blood and protein and a distinct bacterial nidus was not present microscopically.
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1 July 1987
UROGENITAL SINUS CALCULI IN A SAND TIGER SHARK (ODONTASPIS TAURUS)
Michael T. Walsh,
Frank L. Murru
![](/ContentImages/journals/jwdi/23/3/3/WebImages/00903558-23.3.cover.jpg)
Journal of Wildlife Diseases
Vol. 23 • No. 3
July 1987
Vol. 23 • No. 3
July 1987
case report
Odontaspis taurus
sand tiger shark
struvite
Urogenital calculi