Abstract
An infestation of young tilapia, Oreochromis mossambicus Peters, by the flagellate Cryptobia branchialis was observed at the Salton Sea, California, in September, 1997. This is the first report of C. branchialis in a highly saline water-body (43 g 1−1). Ultrastructure of C. branchialis as well as its effect on the gills of tilapia were studied using the scanning and transmission electron microscopy. No direct effect of C. branchialis on the epithelial cells of fish gills was observed. However, alterations of gill general structure, such as deposition of copious mucus on the gill surface, swelling of filaments, reduction of respiratory lamellae and their transformation into short club-shaped structures were found in infected fish. This suggests mortality of young tilapia may arise from decreased gill function in response to Cryptobia infestation.
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Kuperman, B.I., Matey, V.E., Barlow, S.B. (2002). Flagellate Cryptobia branchialis (Bodonida: Kinetoplastida), ectoparasite of tilapia from the Salton Sea. In: Barnum, D.A., Elder, J.F., Stephens, D., Friend, M. (eds) The Salton Sea. Developments in Hydrobiology, vol 161. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-3459-2_7
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DOI: https://doi.org/10.1007/978-94-017-3459-2_7
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