Saprolegnia parasitica in salmon and trout from southern Chile

Thirty five strains ofSaprolegniawere isolated from salmon and trout, obtained from the IX, X and XII regions in southern Chile. The strains were obtained from eggs, gills and fins of alevins and smolt phase of different species of salmonids:Salmosalar(Atlantic salmon);Oncorhynchuskisutch(Coho salmo...

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Bibliographic Details
Published in:Archivos de medicina veterinaria
Main Authors: Zaror, L., Collado, L., Bohle, H., Landskron, E., Montaña, J., Avendaño, F.
Format: Article in Journal/Newspaper
Language:Spanish
Published: Archivos de Medicina Veterinaria 2004
Subjects:
salmón
Saprolegnia parasitica
micosis de peces
saprolegniosis
salmon
fish mycosis
saprolegniasis
Atlantic salmon
Online Access:http://revistas.uach.cl/index.php/amv/article/view/4761
https://doi.org/10.4067/S0301-732X2004000100008
Description
Summary:Thirty five strains ofSaprolegniawere isolated from salmon and trout, obtained from the IX, X and XII regions in southern Chile. The strains were obtained from eggs, gills and fins of alevins and smolt phase of different species of salmonids:Salmosalar(Atlantic salmon);Oncorhynchuskisutch(Coho salmon) andOncorhynchusmykiss(rainbow trout).The strains were re-isolated and purified in Sabouraud agar, Lactrimel and MAO agar, supplemented with antibiotics. The strains were cultured in distilled water and hemp seeds, for the production of sexual structures, and for their morphological identification.All strains collected, were identified asSaprolegniaparasitica. This species was the only one isolated of its genus. Se estudiaron 35 cepas deSaprolegnia, aisladas de Salmón y Trucha, provenientes de dos laboratorios ictiopatológicos de Castro y Puerto Montt, de Chile. Las cepas fueron obtenidas de ovas, branquias y aletas de alevines y “smolt”, de distintas especies de salmonídeos: salmón del Atlántico, salmón coho y trucha arco iris.Se reaislaron las cepas y se purificaron en agar Sabouraud, agar Lactrimel y agar MAO, con antimicrobianos.Saprolegniafue cultivada en agua destilada y semillas de cáñamo, para la producción de estructuras sexuales y posterior identificación morfológica, segúnDick (1973) ySeymour (1970).De las cepas estudiadas, las 35 correspondieron aSaprolegniaparasitica, única especie aislada, conformando el 100 % del total. El 34% de las cepas presentó estructuras sexuadas y el 100% se desarrolló a 30ºC.

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