The combined effect of salinity and temperature on the growth and toxin content of four Chilean strains of Alexandrium catenella (Whedon and Kofoid) Balech 1985 (Dinophyceae) isolated from an outbreak occurring in southern Chile in 2009
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Autor/esAguilera-Belmonte, A. (Alejandra); Inostroza, I. (Ingrid); Sáez-Carrillo, K. (Katia); Franco, J.M. (José Mariano); Riobó, P. (Pilar); Gómez, P.I. (Patricia)
Versión del editorhttp://www.sciencedirect.com/science/article/pii/S1568988313000036
Palabras claveAlexandrium catenella
The toxic dinoflagellate Alexandrium catenella has been detected in the southern Chile since 1972, causing severe negative impacts on public health and aquaculture activities. Several environmental factors have been determined to affect growth and toxin production in Alexandrium strains. The aim of this study was to determine the effect of four combined conditions of two temperatures (10 and 15 °C) and two salinities (15 and 35 psu) on the growth and the Paralytic Shellfish Poisoning (PSP) toxin content and composition in four Chilean strains of A. catenella (PFB41, PFB42, PFB37 and PFB38), isolated during a summer outbreak occurred in southern Chile in 2009. The growth curves showed a higher effect of the salinity in strains PFB41 and PFB42 than in strains PFB37 and PFB38. The values of growth rates and maximum cell densities ranged from 0.25 to 0.73 div day−1 and 1.1 × 104 to 5.2 × 104 cells mL−1, respectively. All of the strains showed the highest values for both growth parameters at ...
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