12th International Conference on Harmful Algae

More documents

Recommendations

Info

INTERNATIONAL SOCIETY FOR THE STUDY OF HARMFUL ALGAE12 th <strong>International</strong> <strong>Conference</strong> on Harmful Algae, Copenhagen, Denmark, 4-8 September 2006and a known volume of filteredseawater was added. Bags wereshaken for 1 min to dislodgeepiphytic microalgae. Thesuspension was preserved withneutral lugol iodine for microscopicidentification and enumeration.Epiphytic microalgae werequantified by sedimentation in asettling chamber and examinedunder an inverted epifluorescencemicroscope using calcofluorstaining. Species composition andabundance are reported. Species ofProrocentrum and Ostreopsis wereobserved, indicating the potentialrisk of toxin accumulation throughthe food web.PO.04-02Short-term feeding response ofthe mussel Mytilus chilensisexposed to diets containing thetoxic dinoflagellate AlexandriumcatenellaSession: PO.04 – Food chainsJM Navarro, AM ContrerasUniversidad Austral de Chile, VALDIVIA,ChileFrequent blooms of Alexandriumcatenella in southern Chileencouraged undertaking of thepresent study, which uses themussel Mytilus chilensis as a modelfor evaluating the feeding responseto diets containing PSP producedby A. catenella. Short-term feedingresponses were measured usingfour diets containing differentproportions of Alexandriumcatenella. Four specimens wereexposed to diets containing A.catenella and three controls werefed with a diet free of A. catenella.Diets containing the highestpercentages of A. catenellasignificantly affected clearance rateduring the initial hours. After thisperiod M. chilensis demonstrated anability to acclimate to toxincontainingdiets, approachingsimilar values to the controlmussels. The relative insensitivity ofM. chilensis to PSP resulted in therapid normalization of its feedingbehaviour, allowing it to accumulatethe paralytic toxin within a shortperiod of time. This capacity madeMytilus chilensis a good indicatorspecies for detection of PSP eventspotentially dangerous to humanhealth. The capacity for acclimationof M. chilensis may be an adaptiveproperty within the naturalpopulation of origin, which wasaffected by the toxic bloom of A.catenella during 2002.(We are grateful for financialsupport from: Grant FONDECYT1030340 and DID-UACH).PO.13-10HABs and hurricanes in FloridaSession: PO.13 - Regional eventsMerrie Neely 1 , Cynthia A Heil 1 , SueMurasko 1 , Kristy Dziemiela 1 , ErinFaltin 1 , Matt Garrett 1 , Earnest Truby 1 ,Tom Corbin 1 , Dan Carlson 2 , DaveEnglish 31 Florida Fish and Wildlife Conservation C,ST. PETERSBURG, FL, United States ofAmerica2 Florida State University, TALLAHASSEE,FL, United States of America3 University of South Florida, ST.PETERSBURG, FL, United States ofAmericaThe 2004 and 2005 hurricaneseason provided two uniqueopportunities to evaluate the effectsof post-hurricane nutrientenrichment of the West FloridaShelf (WFS) and HAB initiation andmaintenance. Multidisciplinaryresearch cruises beganapproximately 10 days after bothHurricanes Charley and Wilma, the249
INTERNATIONAL SOCIETY FOR THE STUDY OF HARMFUL ALGAE12 th <strong>International</strong> <strong>Conference</strong> on Harmful Algae, Copenhagen, Denmark, 4-8 September 2006former occurred during a periodwithout a HAB event and the latteroccurred during a HAB event. Inboth cases, nutrient loading on theWFS was up to an order ofmagnitude greater than prehurricane,wet season conditionsand much greater than dry seasonconditions. Nutrient bioassaystaken at the mouths of bays andrivers during each cruise indicatedthat nitrogen was the most limitingnutrient in these locations, althoughP co-limitation was also implicatedin some regions and light was theprimary limiting factor forphytoplankton growth in about halfthe locations. Comparisons oflimiting nutrients in similarbioassays within offshore andinshore blooms during nonhurricaneconditions providesupporting evidence of nutrientneeds in Karenia brevis blooms.The passage of Hurricanes Katrinaand Rita ameliorated a HAB relatedhypoxia/anoxia event on the WFS.PO.12-13Pseudanabaena cf. moniliformis,a new toxic cyanobacterium fromVietnamSession: PO.12 - Taxonomy and phylogenyLTT Nguyen, N Daugbjerg, Ø MoestrupBiological Institute, COPENHAGEN,DenmarkA freshwater cyanobacterium fromHuong River (Hue, Vietnam) hasbeen isolated into clonal culture(strain HOs24). Based on thegeneral morphology seen in thelight microscope (including size andshape), it was identified asPseudanabaena cf. moniliformis.However, in the transmissionelectron microscope, thin sectionsrevealed the thylakoids having aradial arrangement. It can thereforebe distinguished from thePseudanabaena group sensuKomárek and Caslavská (1991),which is characterized by a more orless concentric arrangement of thethylakoids. A detailed description ofthe ultrastructure including the cellwall and cellular inclusions is alsoprovided. The phylogeneticrelationship between this speciesand other cyanobacteria wasinvestigated by sequencedetermination of the phycocyaningene. Toxin production studies ofstrain HOs24 using ELISA andHPLC analyses showed it toproduce six variants of microcystins.PO.13-07Mucilage phenomena in NorthAegean Sea, Greece: anotherharmful effect of dinoflagellates?Session: PO.13 - Regional eventsG Nikolaidis, K. Aligizaki, K Koukaras,K MoschandreouAristotle University of Thessaloniki,THESSALONIKI, GreeceMucilage phenomena are known inthe Mediterranean Sea since the18th century, while in Greece thefirst reports go back to the ’80s.Recently, the formation of mucilagehas been associated with thedinoflagellates Gonyaulax hyalinaand G. fragilis in Tasman Bay (NewZealand) and the Adriatic Sea(Italy), respectively. Aftersuccessive mucilage formations andsubsequent fisheries problems thelast years in Greek coastal waters,samples were collected on a weeklybasis from 14 sampling stations inThermaikos Gulf (NW Aegean Sea)and sporadically from 20 sites inNorth Aegean Sea between Juneand October 2005 in order toinvestigate any causative organismfor mucilage aggregations; G. cf.250
Page 1 and 2:
INTERNATIONAL SOCIETYFOR THE STUDY
Page 3 and 4:
Dear participantWelcome to Denmark
Page 5 and 6:
INTERNATIONAL SOCIETY FOR THE STUDY
Page 7 and 8:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113 and 114:
Page 115 and 116:
Page 117 and 118:
Page 119 and 120:
Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
Page 139 and 140:
Page 141 and 142:
Page 143 and 144:
Page 145 and 146:
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
Page 171 and 172:
Page 173 and 174:
Page 175 and 176:
Page 177 and 178:
Page 179 and 180:
Page 181 and 182:
Page 183 and 184:
Page 185 and 186:
Page 187 and 188:
Page 189 and 190:
Page 191 and 192:
Page 193 and 194:
Page 195 and 196:
Page 197 and 198:
Page 199 and 200: INTERNATIONAL SOCIETY FOR THE STUDY
Page 249: INTERNATIONAL SOCIETY FOR THE STUDY
Page 301 and 302:
Page 303 and 304:
Page 305 and 306:
Page 307 and 308:
Page 309 and 310:
Page 311 and 312:
Page 313 and 314:
Page 315 and 316:
Page 317 and 318:
Page 319 and 320:
Page 321 and 322:
Page 323 and 324:
Page 325 and 326:
Page 327 and 328:
Page 329 and 330:
Page 331 and 332:
Page 333 and 334:
Page 335 and 336:
Page 337 and 338:
Page 339 and 340:
Page 341 and 342:
Page 343 and 344:
Page 345 and 346:
Page 347 and 348:
Page 349 and 350:
Page 351 and 352:
Page 353 and 354:
Page 355 and 356:
Page 357 and 358:
Page 359 and 360:
Page 361 and 362:
Page 363 and 364:
Page 365 and 366:
Page 367 and 368:
Page 369 and 370:
Page 371 and 372:
Page 373 and 374:
Page 375 and 376:
Page 377 and 378:
Page 379 and 380:
Page 381 and 382:
Page 383 and 384:
Page 385 and 386:
Page 387 and 388:
Page 389 and 390:
Page 391 and 392:
Page 393 and 394:
Page 395 and 396:
Page 397 and 398:
Page 399 and 400:
Page 401 and 402:
Page 403 and 404:
show all

12th International Conference on Harmful Algae

Create successful ePaper yourself

Delete template?

Save as template?