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Fig. 2. Photographs of teleost hearts to illustrate normal and abnormal morphology.
(A) Normal heart from a wild steelhead trout Oncorhynchus mykiss
(
5 kg) from Idaho. Note the typical sharp edges to the pyramidal
ventricle, and that the coronary arteries are not obvious. (B) An abnormal
heart from a farmed rainbow trout Oncorhynchus mykiss (3 kg),
which died suddenly in an aquaculture pen in Norway. Note the more rounded
shape to the ventricle, and the more superficial (prominant) coronary
arteries. (C) An abnormal heart from a farmed Atlantic salmon Salmo
salar (4 kg), which died suddenly in an aquaculture pen in Norway.
Note the excess fat deposits on the surface of the bulbus arteriosus and
ventricle. Photographs A–C were provided courtesy of Dr Trygve Poppe.
(D) An abnormal heart from a farmed sea bass Dicentrachus labrax (1.4
kg), which died suddenly in an aquaculture pen in France. Note the deformed
shapes of the bulbus arteriosus and ventricle. (E) A normal heart from a
farmed triploid brown trout Salmo trutta (400 g) taken from an
aquaculture pen in France. Note the acute angle subtended by the bulbus
arteriosus to the ventricle. (F) An abnormal heart from a farmed triploid
brown trout Salmo trutta (500 g). Note the extreme angle
subtended by the bulbus arteriosus to the ventricle. Photographs D–F
were provided courtesy of Dr Guy Claireaux.
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