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1971 Okadaic acid and related 1988-1989 congeners (DTX1, DTX2); 1991/1992 pectenotoxins (PTX2) 1993-1994 1980/1998 1983 DSP-type toxins; okadaic Prorocentrum 2003 acid and related lima congeners (DTX1, DTX2); 1988-1989 Pectenotoxins 1990-1991 (PTX2, PTX2sa) 1990-1991 Prorocentrum 1993-1994 1993; 1998  cordatum ex Prorocentrum 2000-2003 minimum 1998-2007 1980/1992-1993/ 1998-2002 1970 1971 1986 1971-1972 1975-1980 Pseudonitzschia 1979-1980 Domoic acid spp.
Okadaic acid and YTX, but not DTX1 or PTX2, were detected in the digestive gland by LC-MS/MS.
Concentration (ng/g) as Measured by LC-MS/MS DSP Toxin Level as Measured by Location Sample (n) OA DTXI PTX2 YTX MBA (MU/g) Geumdang Foot ND ND ND ND <0.05 muscle (15) Digestive 3.6 ND ND 1.3 <0.05 gland (15) Chungdo Foot ND ND ND ND <0.05 muscle (15) Digestive 4.7 ND ND 1.0 <0.05 gland (15) DSP, diarrhetic shellfish poisoning; DTX1, dinophysistoxin-1; LC-MS/ MS, liquid chromatography-tandem mass spectrometry; MBA, mouse bioassay; MU, mouse unit; ND, not detected; OA, okadaic acid; PTX2, pectenotoxin-2; YTX, yessotoxin.
The PTx2 movement has started and the most ambitious initiatives and projects were rewarded from among the 155 applications received for the PTx2 Awards, which demonstrated this movement perfectly.
Sheikh Maktoum then honoured PTx2 Awards Winners 2011.
The objective of this first edition of the PTx2 Awards is to recognise the efforts and reward the ambition of mobility stakeholders and their contribution to UITP's strategy PTx2.
SRM LC-MS/MS analysis for toxins was carried out using [[M-H].sup.-] (OA, DTX1, YTX) or [[M + HCOOH-H].sup.-] (PTX2) as the target parent ions in Q1 and particular fragment ions of each toxin in Q3.
The concentrations of OA, DTX1, PTX2, and YTX per unit volume of seawater (10 L) were calculated from toxin concentrations in size-fractionated plankton material from 20 L water.
The seasonal variability of OA, DTX1, and PTX2 per unit volume of seawater (Fig.
The following toxins were detected: OA, DTX1, DTX2, PTX2, PTX2 SA, PTX12-1, PTX12-2, and "PTX12 SA." The seco acids (SA) of PTX2 and PTX12 do not occur naturally in the algae but can be formed during sample preparation via enzymatic hydrolysis.
PTX2, PTX2 SA, PTX12-1, PTX12-2, and PTXI2 SA accumulated in both mussels and oysters during the field exposure (Table 3).
The calculated half-lives of PTX2 and PTX2 SA were highly similar for both species ([t.sub.1/2] = 7-8 days, Table 4).
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