Abstract

ALONSO-RODRIGUEZ, Rosalba et al. Harmful algal blooms produced by Pyrodinium bahamense in Oaxaca, Mexico (2009-2010). Salud pública Méx [online]. 2015, vol.57, n.4, pp.343-351. ISSN 0036-3634.

Objective. Pyrodinium bahamense monitoring in water and their toxins in rock oyster Striostrea prismatica in Santiago Astata and Puerto Escondido Oaxaca was performed from September 2009 to July 2010. Materials and methods. Pyrodinium bahamense abundance in water, and concentration and toxic profile of paralytic shellfish toxins were analyzed monthly in soft tissue of mollusk in composite samples in high performance liquid chromatography. Results. High abundance of Pyrodinium bahamense was found in Santiago Astata on December, February, April and June; and in Puerto Escondido on April and June. The concentrations of the paralyzing toxin that exceeded the regulatory limit for human consumption of mollusks (800 µg STX eq. kg^-1) were presented in Santiago Astata on November, December, January, February and June; and in Puerto Escondido on December and June. Conclusions. For several months there was risk to public health due to the presence of paralytic shellfish toxins above the regulatory limit in oysters from the study area.

Keywords : harmful algal bloom; Pyrodinium bahamense; Striostrea prismatica; shellfish poisoning; Oaxaca.

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