Abstract
A fatal case of bronchopneumonia associated with lungworms in a bottle-nosed dolphin, Tursiops truncatus, in an aquarium in Kochi, Kochi Prefecture, Japan, was studied. Numerous adult lungworms (Stenurus ovatus (Linstow, 1910) (Metastrongyloidea: Pseudaliidae)) were found in the bronchioles of the lungs. The nematodes as well as secondary bacterial infections may have been responsible for the development of pulmonary lesions.