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SHUMWAY, S.E., A.D. CEMBELLA, 1992. Toxic algal blooms : potential hazards to scallop culture and fisheries. Bull. Aquac. Assoc. Can., 92(4): 59-68 .
LAROCQUE, R., A.D. CEMBELLA, 1991. Résultats du premier programme de suivi des populations de phytoplancton toxique dans l'estuaire et le golfe du Saint-Laurent (Région du Québec). Rapp. tech. can. sci. halieut. aquat., 1796, 42 p .
This report presents the results from the first toxic phytoplankton monitoring program in the Quebec region. Its main objective is to answer basic questions about the distribution of toxic species in the St. Lawrence estuary and northwestern Gulf of St. Lawrence. In 1989, 10 stations were sampled for toxic phytoplankton. Most of these stations were sampled weekly between June and November. The data collected in 1989 show that for most stations only one annual bloom of Alexandrium spp. occurred, predominantly during June and July. At certain stations where the sampling started in early June, the link between the PSP toxicity in shellfish and the toxic blooms was clearly established. The station in the Magdalen Islands warranted special attention, since relatively low but constant numbers of Alexandrium spp. cells were encountered during the summer. The sampling program also demonstrated the wide geographical distribution of potential DSP-producing species, as Dinophysis spp. were found at all stations. Particularly high concentrations were noted in the Baie de Gaspé and Baie des Chaleurs. In view of the 1989 results in the Quebec region, some modifications to the program were proposed for the following years.
BRICELJ, V.M., J.H. LEE, A.D. CEMBELLA, 1991. Influence of dinoflagellate cell toxicity on uptake and loss of paralytic shellfish toxins in the northern quahog Mercenaria mercenaria. Mar. Ecol. Prog. Ser., 74: 33-46 .
CEMBELLA, A.D., 1991. Mises au point récentes de la méthodologie analytique des phycotoxines marines : les toxines paralysantes. Page 119 in J.M. Fremy (éd.). Actes du colloque sur les biotoxines marines, Paris, 30-31 janvier 1991. Éditions C.N.E.V.A., Paris .
CEMBELLA, A.D., G. LAMOUREUX, 1991. Monitoring the accumulation and depuration of paralytic shellfish toxins in molluscan shellfish by high-performance liquid chromatography and immunological methods. Pages 217-226 in W.S. Otwell, G.E. Rodrick & R.E. Martin (ed.). Molluscan shellfish depuration. CRC Press, Boca Raton, Fla .
MARSOT, P., A.D. CEMBELLA, J.C. COLOMBO, 1991. Intracellular and extracellular amino acid pools of the marine diatom Phaeodactylum tricornutum (Bacillariophyceae) grown on unenriched seawater in high-cell-density dialysis culture. J. Phycol., 27: 478-491 .
ROBINEAU, B., J.A. GAGNÉ, L. FORTIER, A.D. CEMBELLA, 1991. Potential impact of a toxic dinoflagellate (Alexandrium excavatum) bloom on survival of fish and crustacean larvae. Mar. Biol., 108: 293-301 .
MARSOT, P., A.D. CEMBELLA, L. HOULE, 1991. Growth kinetics and nitrogen-nutrition of the marine diatom Phaeodactylum tricornutum in continuous dialysis culture. J. Appl. Phycol., 3: 1-10 .
ROBINEAU, B., L. FORTIER, J.A. GAGNÉ, A.D. CEMBELLA, 1991. Comparison of the response of five larval fish species to the toxic dinoflagellate Alexandrium excavatum (Braarud) Balech. J. Exp. Mar. Biol. Ecol., 152: 225-242 .
LEGENDRE, L., K. JUNNIPER, D. BOOTH, A. CEMBELLA, Y. DE LAFONTAINE, J. GAGNÉ, W.G. HARRISON, S. ROY, B. SAINTE-MARIE, A. SINCLAIR, R. TRITES, A.F. VÉZINA, 1991. Rapport de l'atelier de travail sur l'océanographie biologique. Pages 23-30 in J.-C. Therriault (éd.). Le golfe du Saint-Laurent : petit océan ou grand estuaire? Ministère des pêches et des océans (Publ. spéc. can. sci. halieut. aquat., 113) .
LEGENDRE, L., K. JUNNIPER, D. BOOTH, A. CEMBELLA, Y. DE LAFONTAINE, J. GAGNÉ, W.G. HARRISON, S. ROY, B. SAINTE-MARIE, A. SINCLAIR, R. TRITES, A.F. VÉZINA, 1991. Report of the Workshop on Biological Oceanography. Pages 23-30 in J.-C. Therriault (ed.). The Gulf of St. Lawrence : small ocean or big estuary ? Dept. of Fisheries and Oceans (Can. Spec. Publ. Fish. Aquat. Sci., 113) .
CEMBELLA, A.D., G. LAMOUREUX, 1991. La détection des toxines paralytiques de mollusques chez les dinoflagellés marins par essai immunoenzymatique. Rev. int. océanogr. méd., 101/104: 181-188 .
TURGEON, J., A.D. CEMBELLA, J.-C. THERRIAULT, P. BÉLAND, 1990. Spatial distribution of resting cysts of Alexandrium spp. in sediments of the Lower St. Lawrence Estuary and the Gaspé coast. Pages 238-243 in E. Graneli, B. Sundström, L. Edler & D.M. Anderson (ed.). Toxic marine phytoplankton. Elsevier Science, New York .
DESBIENS, M., F. COULOMBE, J. GAUDREAULT, A.D. CEMBELLA, R. LAROCQUE, 1990. PSP toxicity of wild and cultured blue mussels induced by Alexandrium excavatum in Gaspé Bay (Canada) : implications for aquaculture. Pages 459-462 in E. Graneli, B. Sundström, L. Edler & D.M. Anderson (ed.). Toxic marine phytoplankton. Elsevier Science, New York .
BRICELJ, V.M., J.H. LEE, A.D. CEMBELLA, D.M. ANDERSON, 1990. Uptake kinetics of paralytic shellfish toxins from the dinoflagellate Alexandrium fundyense in the mussel Mytilus edulis. Mar. Ecol. Prog. Ser., 63: 177-188 .
BRICELJ, V.M., J.H. LEE, A.D. CEMBELLA, D.M. ANDERSON, 1990. Uptake of Alexandrium fundyense by Mytilus edulis and Mercenaria mercenaria under controlled conditions. Pages 269-274 in E. Graneli, B. Sundström, L. Edler & D.M. Anderson (ed.). Toxic marine phytoplankton. Elsevier Science, New York .
CEMBELLA, A.D., C. DESTOMBE, J. TURGEON, 1990. Toxin composition of alternative life history stages of Alexandrium, as determined by high-performance liquid chromatography. Pages 333-338 in E. Graneli, B. Sundström, L. Edler & D.M. Anderson (ed.). Toxic marine phytoplankton. Elsevier Science, New York .
CEMBELLA, A.D., Y. PARENT, D. JONES, G. LAMOUREUX, 1990. Specificity and cross-reactivity of an absorption-inhibition enzyme-linked immunoassay for the detection of paralytic shellfish toxins. Pages 339-344 in E. Graneli, B. Sundström, L. Edler & D.M. Anderson (ed.). Toxic marine phytoplankton. Elsevier Science, New York .
DESTOMBE, C., A.D. CEMBELLA, 1990. Mating-type determination, gametic recognition and reproductive success in Alexandrium excavatum (Gonyaulacales, Dinophyta), a toxic red-tide dinoflagellate. Phycologia, 29: 316-325 .
LAROCQUE, R., A.D. CEMBELLA, 1990. Ecological parameters associated with the seasonal occurrence of Alexandrium spp. and consequent shellfish toxicity in the Lower St. Lawrence Estuary (Eastern Canada). Pages 368-373 in E. Graneli, B. Sundström, L. Edler & D.M. Anderson (ed.). Toxic marine phytoplankton. Elsevier Science, New York .
STABELL, O.B., A.D. CEMBELLA, 1990. Standardizing extraction and analysis techniques for marine phytoplankton toxins. Pages 518-521 in E. Graneli, B. Sundström, L. Edleret & D.M. Anderson (ed.). Toxic marine phytoplankton. Elsevier Science, New York .
PLEASANCE, S., M.A. QUILLIAM, A.S.W. DeFREITAS, J.C. MARR, A.D. CEMBELLA, 1990. Ion-spray mass spectrometry of marine toxins II : analysis of diarrhetic shellfish toxins in plankton by liquid chromatography/mass spectrometry. Rapid Commun. Mass. Spectrom., 4: 206-213 .
DOUCETTE, G.J., A.D. CEMBELLA, G.L. BOYER, 1989. Cyst formation in the red tide dinoflagellate Alexandrium tamarense (Dinophyceae) : effects of iron stress. J. Phycol., 25: 721-731 .
CEMBELLA, A.D., J.-C. THERRIAULT, 1989. Population dynamics and toxin composition of Protogonyaulax tamarensis from the St. Lawrence Estuary. Pages 81-84 in T. Okaichi, D.M. Anderson & T. Nemoto (ed.). Red tides : biology, environmental science and toxicology. Elsevier, New York .
CEMBELLA, A.D., 1989. Occurrence of okadaic acid, a major diarrheic shellfish toxin, in natural populations of Dinophysis spp. from the eastern coast of North America. J. Appl. Phycol., 1: 307-310 .
CEMBELLA, A.D., F.J.R. TAYLOR, J.-C. THERRIAULT, 1988. Cladistic analysis of electrophoretic variants within the toxic dinoflagellates genus Protogonyaulax. Bot. Mar., 31: 39-51 .
CEMBELLA, A.D., J. TURGEON, J.-C. THERRIAULT, P. BÉLAND, 1988. Spatial distribution of Protogonyaulax tamarensis resting cysts in nearshore sediments along the north coast of the Lower St. Lawrence Estuary. J. Shellfish Res., 7: 597-609 .
CEMBELLA, A.D., J.J. SULLIVAN, G.L. BOYER, J.R. TAYLOR, R.J. ANDERSEN, 1987. Variation in paralytic shellfish toxin composition within the Protogonyaulax tamaronsis/catenella species complex; red tide dinoflagellates. Biochem. Syst. Ecol., 15(2): 171-186 .
Unialgal isolates of the Protogonyaulax (–Gonyaulax) tamarensis/catenella species complex, a group of dinoflagellates which causes paralytic shellfish poisoning (PSP), were subjected to toxin analysis by HPLC. Protogonyaulax isolates from widely separated geographical locations were compared, including the northeastern Pacific (British Columbia and Washington State), eastern Canada, Portugal, the United Kingdom and New Zealand. Two distantly related gonyaulacoid species were also analyzed, but the presence of PSP toxins was not detected. Although Protogonyaulaxisolates varied markedly in total toxin concentration and toxicity, even through the culture cycle, the toxin ratios of individual isolates were distinctive and relatively constant. No toxins were detected in the Plymouth (U.K.) isolate of P. tamarensis, from the species type locality. Two isolates from Vancouver Island (British Columbia), which were previously considered to be non-toxic according to the mouse bioassay, revealed weak toxin spectra by HPLC. Within populations from English Bay (British Columbia) the toxin profiles of tamarensoid isolates tended to be conservative. However, this was not the case for the catenelloid forms from Washington State, which displayed a greater degree of toxin heterogeneity. Significantly, there was no identifiable relationship between toxicity or toxin profiles and the morphological characteristics conventionally used to separate the two dominant morphotypes into species within this species complex.©1987 Pergamon Journals Ltd.
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