Latitudinal transects in the southeastern Pacific Ocean reveal a diverse but patchy distribution of phycotoxins

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

“…In contrast, D. acuminata was detected always co-occurring with D. tripos in the samples with PTX from expedition 2. Pectenotoxin-11 has been reported from New Zealand (Suzuki et al, 2003), the Galician Rías, Spain (Pizarro et al, 2008), North Sea (Krock et al, 2008), along the Chilean coast (Blanco et al, 2007;Krock et al, 2009;Trefault et al, 2011) and from the Benguela Current, South Africa (Pitcher et al, 2011), but this is the first report for the Argentinean Sea. Although this toxin was already associated with Dinophysis acuta (MacKenzie et al, 2005;Suzuki et al, 2006) and Dinophysis acuminata (MacKenzie et al, 2005), our data do not strongly support Dinophysis tripos being a producer of PTX-11, because there was little correlation between the toxin and the species (r = 0.67).…”

“…These toxins are globally distributed and recurrently found at the southeast Pacific coast of Chile (Blanco et al, 2007;Krock et al, 2009;Trefault et al, 2011). In Argentinean waters, the presence of PTX-2 was recently detected in the Buenos Aires province coast (Montoya et al, 2013), and in the San Jorge Gulf (B.…”

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

“…Results of a study conducted along a transect of the Chilean coast showed a wide distribution of PTX in plankton over almost the entire transect, whereas OA was absent and DTX-1 was detected only within a narrow area at three sampling stations (Trefault et al, 2011). Likewise, DTX and OA were not detected in waters of northern Chile where Dinophysis acuminata was present, but PTX-2 and analogs were found (Krock et al, 2009).…”

Dinophysis Toxins: Causative Organisms, Distribution and Fate in Shellfish

“…However a D. acuminata bloom was associated with only DTX1 in Mytilus chilensis from Estero Nuñez (53°S), Magellan Strait, in March 1998 [245]. DTX1 has also been detected in phytoplankton samples collected from the Western Strait of Magellan (52°S) [246]. However, D. acuminata is not the only DTX1 producer in Chilean Patagonia.…”