Dinophysis spp. asociadas a detección de toxinas diarreicas (DSTs) en moluscos y a intoxicación diarreica en humanos (Provincia de Buenos Aires, Argentina)

Abstract

Dinophysis spp. associated to detection of diarrheic shellfish toxins (DSTs) in mollusks and to human diarrhoetic disease episode (Buenos Aires Province, Argentina

Distribution of Dinophysis species and their association with lipophilic phycotoxins in plankton from the Argentine Sea

“…The most widely distributed species was Dinophysis acuminata, which is in accordance with previous reports (Balech, 1988;Sar et al, 2010;Negri et al, 2013;Sunesen et al, 2014). This species was the dominant taxon of the genus during Expeditions 1 and 3 (austral autumn and spring, respectively) and exhibited the highest cell densities at the southern extent of the sampling area, in slope waters and in the San Jorge Gulf, where surface temperatures ranged between $8 and $13 8C.…”

“…More recently, a DSP outbreak was associated with the presence of Dinophysis acuminata and Dinophysis caudata on the northern coast of Buenos Aires Province (36.5-378S) in summer 2010, and during which both OA and DTX-1 were detected in mussels by liquid chromatography with fluorescence detection (LC-FD) (Sar et al, 2010(Sar et al, , 2012. Later, positive mouse bioassays for DSP were recorded in mussels collected in the same area during January and November, 2012, and related circumstantially to the presence of D. acuminata and D. caudata, respectively (Sunesen et al, 2014).…”

Analysis of the hydrographic conditions and cyst beds in the San Jorge Gulf, Argentina, that favor dinoflagellate population development including toxigenic species and their toxins

“…Harmful algal blooms of the toxic marine dinoflagellates Alexandrium tamarense, Alexandrium catenella and Gymnodinium catenatum, which cause the neurotoxic paralytic shellfish poisoning (PSP), are a recurrent phenomenon along the Argentinean coast (Carreto et al, 1985(Carreto et al, , 1998a(Carreto et al, ,b, 2008Esteves et al, 1992;Santinelli et al, 2002). Toxic diarrhetic shellfish poisoning (DSP) episodes caused by Dinophysis species have been also reported (Sar et al, 2010(Sar et al, , 2012, as well as the production of domoic acid (DA) by Pseudo-nitzschia species under field and culture conditions (Montoya et al, 2006;Negri et al, 2004;Sastre et al, 2007). In contrast, little is known about the occurrence of pectenotoxins (PTXs) and yessotoxins (YTXs).…”

Co-occurrence of Dinophysis tripos and pectenotoxins in Argentinean shelf waters

“…In the Argentine Sea, it is known to occur between %36 and 558 S (Balech, 2002), and it has been frequently observed along northern coastal waters of Buenos Aires Province (36-378 S), reaching densities up to 3 Â 10 2 cell L À1 (Sar et al, 2010). The distinctive cell shape and size, including the presence of two posterior hypothecal projections, allow the differentiation of D. tripos from other related species (Balech, 1988;Larsen & Moestrup, 1992).…”