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 2006biological and hydrodynamicalnumerical models are beingdeveloped for A. catenella bloomsimulation in the area. In order toreconcile our observations withnumerical simulations, it appearsthat the low inoculum resulting fromcyst bank germination must remainconcentrated close to the bottom asa condition for successful bloominitiation. Less than 4 days of watercolumn stability associated with afrontal structure reduced thedispersion and supported thecohesion of the bottom cell clusters,allowing the seeding population toreach a critical density for blooming.PO.01-27Population genetic structure ofSkeletonema marinoi - a modelspecies for phytoplankton bloomdynamicsSession: PO.01 - GeneticsA GodheGöteborg University, GÖTEBORG, SwedenPhytoplankton blooms fuel coastalfood webs but can sometimes beharmful due to overwhelmingconcentrations, production of toxins,or mechanical injury. The geneticdiversity of a population is importantin determining the response tochanging environmental conditions.This diversity may also be importantfor bloom formation. We haveexamined the genetic diversity ofSkeletonema marinoi clonesisolated from Gullmar Fjord on theSwedish West Coast. This is a verycommon species in the area. Itoccurs from February to November,and reaches its highest densityduring the spring bloom in Februaryor March. More than a hundreddifferent clones were individuallyisolated from plankton samplescollected over more than one year.Allellic diversity within thepopulation was confirmed byanalyzing several microsatellite loci.Great genetic variation indicatesthat sexual reproduction is importantin the population. The high geneticdiversity of the population may be aprerequisite for its extensiveoccurrence during variable seasonalconditions. Sequencing ofconserved parts of the genome(LSU rDNA) also displayed a rangeof genetic variation, whereasmorphological features examined inthe electron microscope did notvary.PO.08-05Gyrodinium fissum: harmfulspecies or new biotechnologicalobject?Session: PO.08 - ToxicologyEvgeny B. Gol'dinSouthern Branch of the National Agrarian,SIMFEROPOL, UkraineThe dinoflagellate Gyrodiniumfissum (Gf) is poorly studied alga.Some authors regard it as red tideorganism; others as non-toxic objectof crustacean feeding; Gf biocidalactivity has not been properlystudied. We exposed lackey andbrown-tale moths, fall webworm andColorado potato beetle (Cpb) to theeffects of Gf. The leaves weretreated with a Gf culture and fed tothe insects. Gf demonstratedvarious inhibitory effects. (1)Repellent action: lackey moth larvaedid not feed and gathered in thesubstrate and jar walls. (2) Longtermdeterrent action with residualconsequences: the larval nutritionfell considerably (3.0-5.0% ofcontrol). (3) A short-term deterrentaction: brown-tale moth larvae. (4)Inhibition of growth: developmentallag of larvae of lackey moth179
INTERNATIONAL SOCIETY FOR THE STUDY OF HARMFUL ALGAE12 th <strong>International</strong> <strong>Conference</strong> on Harmful Algae, Copenhagen, Denmark, 4-8 September 2006(50.0%), fall webworm (29.2-68.0);the larvae and imago in Cpb (48.5-63.5% and 15.4-16.1%). (5)Dysfunction of metamorphosis:defects of pupation and imagoforming; treatment of Cpb eggscaused elimination of eggs (56.3%)and hatching larvae (32.6%). (6)Mortality during 10-20 days: inlackey moth (95.0%), fall webworm(100.0%) and Cpb (84.4-100.0%).Histological examinationdemonstrated the degradation oforgans and tissues. Gf can bepropagated in controlled cultivation;its toxicity is selective: it is not toxicto non-target objects: Gf can beused in biological pest control.PO.10-37Ecological and physiologicalstudies of Dinophysis spp.during an upwelling-downwellingcycle in Ría de Pontevedra (NWSpain)Session: PO.10 - Ecophysiology &autecologyS Gonzalez-Gil, L Velo, B RegueraInstituto Español de Oceanografía, VIGO,SpainDuring a two-week multidisciplinarycruise in the Ría de Pontevedra inJune 2005 (HABIT 2005) aimed atidentifying and characterizing thinlayers under stratified conditions,and to study the populationdynamics of Dinophysis species,biological observations were madein an effort to define thephysiological status of eachspecies. Viability assays,percentages of vacuolatedspecimens, positions of the nuclei,as well as polysaccharide depositsand morphometric measurementswere made on live samples.Indications of apparent mixotrophyin Dinophysis rotundata and D.acuminata were detected by both insitu autofluorescence and by usingthe fluorochrome Sybr-Green.Further experiments are in progressinvolvog laboratory incubations ofisolated single cells of D. rotundataand D. acuminata in multiwellplates, using a cryptophyte as food,and with a new class of modelprotein particles labelled covalentlywith fluorochromes as modelparticles for the determination ofgrazing rates.PO.05-30Yessotoxin contamination: thefirst report from PortugueseshellfishSession: PO.05 - Toxin analysisSS Gomes, P Vale, MJ Botelho, SMRodroguez, M Cerejo, MG VilarinhoINIAP/IPIMAR, LISBOA, PortugalSeveral Portuguese shellfishspecies were screened for thepresence of yessotoxin (YTX) usinga newly developed immunoassaykit, sensitive to a wide variety ofYTX analogues (YTXs). Shellfishsamples were collected at Aveiroand Formosa Lagoon, and at theAlgarve offshore during thesummer/autumn 2005. In lagunarspecies, YTXs were detected in thefollowing at decreasingconcentrations: Mytilusgalloprovincialis >> Cerastodermaedule > Ruditapes decussatus =Venerupis pullastra = Solenmarginatus, but not in Crassostreaspp. In offshore species, YTXs weredetected in the following atdecreasing concentrations: Spisulasolida > Donax spp = Chameleagallina. Some of the musselssamples collected in the north ofPortugal (Aveiro), as well as thesouth (Formosa), showed levelsaround the current EU regulatory180
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: INTERNATIONAL SOCIETY FOR THE STUDY
Page 179: INTERNATIONAL SOCIETY FOR THE STUDY
Page 231 and 232:
Page 233 and 234:
Page 235 and 236:
Page 237 and 238:
Page 239 and 240:
Page 241 and 242:
Page 243 and 244:
Page 245 and 246:
Page 247 and 248:
Page 249 and 250:
Page 251 and 252:
Page 253 and 254:
Page 255 and 256:
Page 257 and 258:
Page 259 and 260:
Page 261 and 262:
Page 263 and 264:
Page 265 and 266:
Page 267 and 268:
Page 269 and 270:
Page 271 and 272:
Page 273 and 274:
Page 275 and 276:
Page 277 and 278:
Page 279 and 280:
Page 281 and 282:
Page 283 and 284:
Page 285 and 286:
Page 287 and 288:
Page 289 and 290:
Page 291 and 292:
Page 293 and 294:
Page 295 and 296:
Page 297 and 298:
Page 299 and 300:
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?