Massive infestation by Amyloodinium ocellatum (Dinoflagellida) of fish in a highly saline lake, Salton Sea, California, USA

Persistent fish infestation by the parasitic dinoflagellate Amyloodinium ocellatum was found at a highly saline lake, Salton Sea, California, USA. The seasonal dynamics of the infestation of young tilapia was traced in 1997-1998. First appearing in May, it became maximal in June-August, decreased in...

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Bibliographic Details
Published in:Diseases of aquatic organisms 1999-12, Vol.39 (1), p.65-73
Main Authors: KUPERMAN, B. I, MATEY, V. E
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Amyloodinium ocellatum
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Brackish
California - epidemiology
Dinoflagellida
Dinoflagellida - growth & development
Dinoflagellida - ultrastructure
Disease Outbreaks - veterinary
Fish Diseases - epidemiology
Fish Diseases - parasitology
Fundamental and applied biological sciences. Psychology
Microscopy, Electron, Scanning - veterinary
Protozoan Infections - epidemiology
Protozoan Infections - parasitology
Protozoan Infections, Animal
Seasons
Sodium Chloride
Temperature
Tilapia - parasitology
USA, California, Salton Sea
Vertebrata
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Summary:Persistent fish infestation by the parasitic dinoflagellate Amyloodinium ocellatum was found at a highly saline lake, Salton Sea, California, USA. The seasonal dynamics of the infestation of young tilapia was traced in 1997-1998. First appearing in May, it became maximal in June-August, decreased in October and was not detectable in November. Outbreak of the infestation and subsequent mortality of young fish was registered at the Sea at a water temperature and salinity of 40 degrees C and 46 ppt, respectively. Some aspects of the ultrastructure of parasitic trophonts of A. ocellatum and their location on the fish from different size groups are considered. The interactions of parasitological and environmental factors and their combined effect upon fish from the Salton Sea are discussed.
ISSN:0177-5103
1616-1580
DOI:10.3354/dao039065