Consulta: subjectFacets:"Dinophysis acuminata"
Registros recuperados: 13
Data/hora: 14/06/2024 13:43:11

Dinoflagelles toxiques sur les cotes francaises pendant l'ete 1983. Extension du dinoflagelle Dinophysis acuminata en Bretagne sud et consequences pour les cultures marines.
Provedor de dados: 5
Autores: Lassus, Patrick; Martin, A; Maggi, Pierre; Berthome, Jean-paul; Langlade, Aime; Bachere, Evelyne.
Discolored waters and human diseases by shellfishes were dominant features of summer 1983 in south coast of Brittany. Vilaine Bay, the most damaged area, was successively affected by brown waters in early June, and diarrhetic intoxications by harvested mussels (July and August), just as DPS producing dinoflagellate (D. acuminata ) reached higher water or mussel guts concentrations than years before. Outspreading in the whole south coast of Brittany and possible relation with hydrological or biological parameters are analyzed.
Tipo: Text
Palavras-chave: Brittany; France; ANE; Protista; Dinophysis acuminata; Shellfish culture; Red tides; Biological poisons; Toxicants.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1805.pdf

Bilan 1984-1985 des études "Eaux colorées". Compte-rendu de réunion des 21 et 22 janvier 1986
Provedor de dados: 5
Autores: Arzul, Genevieve.
Les études entreprises sur le thème "Eaux colorées" durant les années 1984-1985 ont montré des résultats divers : - les essais de cultures de Dinophysis acuminata et de Gyrodinium aureolum ont donné des résultats fragmentaires tout en permettant de dégager quelques points positifs, mais les essais de mise en culture n'ont pas encore abouti. - les études hydrologiques à long terme pour la surveillance d'apparition de Gyrodinium aureolum en Baie de Douarnenez, Dinophysis acuminata dans un bassin du Havre et en Baie de Vilaine sont en voie d'achèvement. Y sont adjointes les observations faites sur les échantillons prélevés à Plogoff et Ploumoguer en 1978-80. - l'extraction des toxines de Gyrodinium aureolum, la standardisation du test souris pour le DSP,...
Tipo: Text
Palavras-chave: Eaux colorées; Dinophysis acuminata; Gyrodinium aureolum; Phyto-toxines; Sédiments.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/00139/25020/23125.pdf

Contribution to toxicity assessment of Dinophysis acuminata (Dinophyceae)
Provedor de dados: 5
Autores: Marcaillou-le Baut, Claire; Mondeguer, Florence; Gentien, Patrick.
Blooms of Dinophysis in French coastal waters are implicated in most bans on marketing commercial bivalves. However, the relation between Dinophysis cell density and shellfish toxicity is not always consistent. Discrepancies may be due to the simple fact that it is nearly impossible to compare an integral over a few days (shellfish toxin content) and water samples. Furthermore, it seems that cells may have a variable specific toxicity. This work focuses on the variability in cell toxicity taking into account recent findings and using liquid chromatography coupled to mass spectrometry with an ion trap and electrospray interface. Esterified analogues of okadaic acid (DTX-4 and diol-esters) have been identified in cultures of Prorocentrum lima, another...
Tipo: Text
Palavras-chave: Liquid chromatography electrospray ionization mass spectrometry; Okadaic acid; Dinophysistoxins; Dinophysis acuminata.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/publication-605.pdf

The effects of growth phase and light intensity on toxin production by Dinophysis acuminata from the northeastern United States
Provedor de dados: 5
Autores: Tong, Mengmeng; Kulis, David M.; Fux, Elie; Smith, Juliette L.; Hess, Philipp; Zhou, Qixing; Anderson, Donald M.
For many years, the study of toxic Dinophysis species was primarily restricted to field populations until it was recently demonstrated that some of these organisms can be mixotrophically cultured in the laboratory with the ciliate prey, Myrionecta rubra. which had previously been fed with cryptophytes of the genus Teleaulax and Geminigera. Here we investigated the influence of growth phase and light intensity on the production of diarrhetic shellfish poisoning (DSP) toxins and pectenotoxins (PTXs) in cultures of Dinophysis acuminata from the northeastern United States. The cell toxin content of okadaic acid (OA), dinophysistoxin-1 (DTX1), pectenotoxin-2 (PTX2), and the okadaic acid diol ester (OA-D8) varied significantly with growth phase under all light...
Tipo: Text
Palavras-chave: Diarrhetic shellfish poisoning (DSP); Dinophysis acuminata; Dinophysistoxin (DTX); Growth phase; Light; Okadaic acid (OA); Pectenotoxins (PTXs).
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00037/14827/12195.pdf

Phytoplankton assemblages and characterization of a Dinophysis acuminata population during an upwelling-downwelling cycle
Provedor de dados: 5
Autores: Gonzalez-gil, Sonsoles; Velo-suarez, Lourdes; Gentien, Patrick; Ramilo, Isabel; Reguera, Beatriz.
The distributions of Dinophysis acuminata, its potential prey Myrionecta rubra, and the microplankton populations associated with them, were studied in Ria de Pontevedra (NW Spain) during a 2 wk cruise that covered an upwelling-downwelling cycle, and during intensive sampling over 21 h at the end of the cruise. Special attention was focused on the characterization and physiological condition of D. acuminata. There was vertical segregation between a phytoplankton assemblage that was dominated by upwelling-promoted diatoms and another assemblage that was dominated by small dinoflagellates, located in the warmer surface layer (0 to 5 m) where D. acuminata was observed. High spatio-temporal variability was observed in the frequency of cells containing starch...
Tipo: Text
Palavras-chave: Harmful algal blooms; Plankton communities; Dinophysis acuminata; Myrionecta rubra; Predator-prey interactions.
Ano: 2010
URL: http://archimer.ifremer.fr/doc/00002/11296/7822.pdf

Dinoflagelles toxiques sur les cotes francaises pendant l'ete 1983. Manifestations de Dinophysis acuminata sur le littoral normand.
Provedor de dados: 5
Autores: Paulmier, Gerard; Joly, Jean-pierre.
Numerous cases of food poisoning were observed in South Normandy during the summer 1983 and attributed to shellfish consumption. At the same time a dinoflagellate Dinophysis acuminata was found in the Bay of Seine and in north Normandy where high concentrations induced "red waters". The observation of the stomach contents of the mussels showed that this Dinophysis was one of the main constituents of the alimentary bolus. The toxicity of type DSP, determined by the mouse-test, is more or less correlated with the abundance coefficient of D. acuminata . Its space distribution also seems connected to the tidal movements.
Tipo: Text
Palavras-chave: Normandy; France; ANE; Dinophysis acuminata; Food poisoning; Stomach content; Mussel culture; Red tides; Biological poisons.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1807.pdf

Dinophysis acuminate (dinophyceae), une espèce à géométrie variable sur les côtes françaises
Provedor de dados: 5
Autores: Lassus, Patrick; Marcaillou-le Baut, Claire.
Tipo: Text
Palavras-chave: Morphologie; Variabilité; Ultrastructure; Croissance; France; Dinophysis acuminata; Europe; Milieu marin; Zone côtière; Phytoplancton; Pyrrophycophyta; Algae; Thallophyta; Morphology; Variability; Ultrastructure; Growth; France; Europe; Marine environment; Coastal zone; Phytoplankton; Pyrrophycophyta; Algae; Thallophyta.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00133/24468/22484.pdf

Dinoflagelles toxiques sur les cotes francaises durant l'ete 1983. Synthese des connaissances sur les efflorescences estivales de Dinophysis et Gyrodinium.
Provedor de dados: 5
Autores: Marcaillou-le Baut, Claire.
The authors summarize briefly the information given by the foreign studies on two toxic marine dinoflagellates and present the situations observed in 1983 on the coasts of Normandy and Brittany.
Tipo: Text
Palavras-chave: France; ANE; Gyrodinium aureolum; Dinophysis acuminata; Phytoplankton; Red tides; Biological poisons; Algal blooms.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1804.pdf

Dinoflagelles toxiques sur les cotes francaises pendant l'ete 1983. Perturbations des ecosystemes en baie de Vilaine. Analyse des successions phytoplanctoniques precedant l'apparition d'un dinoflagelle toxique.
Provedor de dados: 5
Autores: Pierre, Marie-josé; Lassus, Patrick.
The incidence of phytoplankton communities sequences on toxic dinoflagellate Dinophysis acuminata occurrence was studied in the course of summer 1983, in Vilaine Bay. Despite difficulties in finding obvious relationship between occurrences of that species in the fields and preceding species it nevertheless may be emphasized: 1) a real perturbation of ecosystems is noticeable (rank-frequency diagrams); 2) the amount of sampling stations might be reduced in so far as representative stations are maintained.
Tipo: Text
Palavras-chave: Vilaine Bay; Brittany; France; ANE; Dinophysis acuminata; Ecosystem disturbance; Red tides; Phytoplankton; Ecological succession.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1806.pdf

Climate Variability and Oceanographic Settings Associated with Interannual Variability in the Initiation of Dinophysis acuminata Blooms
Provedor de dados: 5
Autores: Diaz, Patricio A.; Reguera, Beatriz; Ruiz-villarreal, Manuel; Pazos, Yolanda; Velo-suarez, Lourdes; Berger, Henrick; Sourisseau, Marc.
In 2012, there were exceptional blooms of D. acuminata in early spring in what appeared to be a mesoscale event affecting Western Iberia and the Bay of Biscay. The objective of this work was to identify common climatic patterns to explain the observed anomalies in two important aquaculture sites, the Galician R as Baixas (NW Spain) and Arcachon Bay (SW France). Here, we examine climate variability through physical-biological couplings, Sea Surface Temperature (SST) anomalies and time of initiation of the upwelling season and its intensity over several decades. In 2012, the mesoscale features common to the two sites were positive anomalies in SST and unusual wind patterns. These led to an atypical predominance of upwelling in winter in the Galician R as,...
Tipo: Text
Palavras-chave: Dinophysis acuminata; Climate variability; Upwelling patterns; River plumes; Exceptional algal blooms; Predictive models.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00180/29157/27554.pdf

Dinoflagelles toxiques sur les cotes francaises pendant l'ete 1983.Validite du test-souris pour le controle routinier de secteurs mytilicoles contamines par la toxine du Dinophysis.
Provedor de dados: 5
Autores: Marcaillou-le Baut, Claire; Le Dean, Loic; Truquet, Philippe.
Following exceptional outbreak of toxic dinoflagellate species in Vilaine Bay (summer 1983) a survey was carried out: variations in phytoplankton abundance and distribution in water and in mussel guts were followed. In the same time toxicity studies using mouse-test were performed with contaminated shellfishes, and mouse-test calibration was attempted. In spite of sampling and analysis conditions could be open to criticism, results obviously showed relation between shellfishes toxicity and occurrence of responsible species: Dinophysis acuminata.
Tipo: Text
Palavras-chave: Brittany; France; ANE; Dinophysis acuminata; Red tides; Toxicity tests; Food poisoning; Biological poisons; Mussel culture.
Ano: 1983
URL: http://archimer.ifremer.fr/doc/1983/publication-1808.pdf

Morphometric characterization of Dinophysis acuminata/D. sacculus complex in Guanabara Bay, Brazil
Provedor de dados: 49
Autores: Barrera-Alba,José Juan; Piedras,Fernanda Reinhardt; Duarte,Carla Lucatelli; Lopes,Raquel Neves Tavares; Moser,Gleyci Aparecida Oliveira.
Abstract: Most studies of Dinophysis acuminata in Brazil are for the southern region, where blooms are recurrent. In 2016, the presence of D. acuminata caused the first-ever production and consumption of species of mollusks commercial embargo from the state of Sao Paulo, Southeast Brazil. Potentially toxic species of Dinophysis have been reported in Guanabara Bay (GB) but only occasionally and in low densities. The present note is the first report of a high-density event (~105 cells L-1) of D. acuminata/D. sacculus complex in GB. D. acuminata/D. sacculus complex species were identified using scanning-electron and inverted-light microscopy. Most of the studied cells possessed a dorsally convex hyposomal plate and had dimensions typical of D. acuminata....
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Dinoflagellates; Dinophysis acuminata; Dinophysis sacculus; Eutrophic marine ecosystem; South Atlantic Central Water.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000300504

Episodios de toxicidad en moluscos de aguas marinas costeras de la provincia de Buenos aires (Argentina) asociados a algas toxígenas (marzo de 2008-marzo de 2013)
Provedor de dados: 51
Autores: Sunesen,Inés; Lavigne,Andrea S; Goya,Alejandra; Sar,Eugenia A.
A partir de un monitoreo de microalgas toxígenas y toxinas en moluscos iniciado en 2008, llevado a cabo entre San Clemente del Tuyú y Mar Azul (Zona Norte) y en la Bahía Anegada (Zona Sur) de la Provincia de Buenos Aires fueron registrados cuatro brotes de toxicidad por toxina paralizante de moluscos (PSP) y ocho brotes por toxinas lipofílicas de moluscos (DSP/no determinadas). Los resultados obtenidos fueron empleados como herramienta técnica a partir de la cual la autoridad de aplicación (Dirección Provincial de Pesca del Ministerio de Asuntos Agrarios de la Provincia de Buenos Aires) fundó la decisión de imponer once vedas y una alerta sanitaria al consumo, extracción y comercialización de moluscos. Tres de los brotes por PSP se produjeron en la Zona...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alexandrium tamarense; Dinophysis acuminata; Dinophysis caudata; Gymnodinium catenatum; Toxinas DSP; Toxinas lipofílicas; Toxinas PSP.
Ano: 2014
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722014000300002