12th International Conference on Harmful Algae

INTERNATIONAL SOCIETY FOR THE STUDY OF HARMFUL ALGAE12 th <strong>International</strong> <strong>Conference</strong> on Harmful Algae, Copenhagen, Denmark, 4-8 September 2006and which often bloom close to thistemperature, are primarily Life-formTypes I, II, III. Such 'cold watertolerant' species tend to be nontoxicor, if toxic, ichthyotoxic.Alexandrium tamarense is aconspicuous transitional specieswhich bridges the 15 °C barrier.Some ecological consequences ofthe 15 °C barrier and the effect oftemperature on motility areconsidered, including the corollarythat temperature, not biophysics orecology, generally constrainsflagellate blooms to periods whenstratified waters prevail.PL.02The public policy of harmful algalbloomsSession: PL..02 - Plenary IIPresentation time: 14:15 - 14:50Porter HoaglandWoods Hole Oceanographic Institution,WOODS HOLE, United States of AmericaHarmful algal blooms (HABs) arenatural hazards that have beenrecognized as threats to humanhealth and welfare worldwide.Arguments have been made in thescientific literature that HABs havebecome more widespread, even ashuman coastal populations continueto expand, suggesting that thepotential for adverse impacts isintensifying. In the face of suchthreats, national and localgovernments must make decisionsabout potential policy responses.These decisions must beundertaken subject to significantbudget constraints and in thecontext of the need to respond tothreats from other types of naturaland human hazards. Economicanalysis may be useful in assistingdecision-makers in their choice ofthe most appropriate policyresponse to any specific HAB event.All too often, however, a looseaccounting of potential financiallosses due to HABs is usedinappropriately to argue for the needfor specific policy responses. Idiscuss the problems with theseapproaches, and outline methodsfor compiling and undertakinganalyses of the data that can behelpful in making rational decisionsabout policy responses to HABs. Iconclude with the observation thatthere is a need for a closercollaboration between HABsscientists and marine resourceeconomists in this field.O.03-01Dietary uptake of dinoflagellatederivedsaxitoxins in non-toxicpuffer-fish: implications forglobal seafood safetySession: O.03 - Public HealthPresentation time: 14:55 - 15:15JR Deeds 1 , SM Etheridge 1 , CGieseker 1 , CS Cheely 1 , RReimschuessel 1 , JP Abbott 2 , KKawabata 2 , JH Landsberg 2 , S Hall 11 US Food and Drug Administration,LAUREL, MARYLAND, United States ofAmerica2 Fish and Wildlife Research Institute, ST.PETERSBURG, FLORIDA, United Statesof AmericaBetween 2002-2004, 28 fishpoisoning cases were caused bythe consumption of southern pufferfish(Sphoeroides nephelus), fromthe Indian River Lagoon (IRL),Florida, USA. Saxitoxin, nottetrodotoxin, was reported fromunconsumed filets after the firstcases. Pyrodinium bahamense isnow considered the putative toxinsource. In contrast to reports fortetrodotoxic fish, southern puffermuscle contained high levels oftoxin (up to 5000 µg STX/100 g)32