LIFE HISTORY AND <i>IN SITU</i> GROWTH RATES OF <i>ALEXANDRIUM TAYLORI</i> (DINOPHYCEAE, PYRROPHYTA)

Garcés, Esther; Delgado, Maximino; Masó, Mercedes; Camp, Jordi

doi:10.1046/j.1529-8817.1998.340880.x

Cited by 77 publications

(76 citation statements)

References 32 publications

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“…Over the subsequent 10 days both stages tended to have similar densities. Temporary cyst formation has usually been associated with unfavourable environmental conditions but for A. taylori the temporary cyst is an intrinsic stage of its life cycle (Garcés et al, 1998). The sticky nature of the temporary cyst of A. taylori facilitates the formation of clusters (Fig.…”

Section: Resumen: Los Plásticos Flotantes Son Potenciales Vectores Dementioning

confidence: 99%

Drifting plastic debris as a potential vector for dispersing Harmful Algal Bloom (HAB) species

Masó¹,

Garcés²,

Pagès³

et al. 2003

Sci. Mar.

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Section: Resumen: Los Plásticos Flotantes Son Potenciales Vectores Dementioning

confidence: 99%

Drifting plastic debris as a potential vector for dispersing Harmful Algal Bloom (HAB) species

Masó¹,

Garcés²,

Pagès³

et al. 2003

Sci. Mar.

Self Cite

272

138

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“…The reason for this consistent difference in encystment behavior between the CCMP2357 isolates and the others was unknown. Active clustering of cells during temporary encystment occurs for unknown reasons and by unknown mechanisms in several genera of dinoflagellates (Lombard & Capon 1971, Ucko et al 1997, Garcés et al 1998, Parrow et al 2002, Parrow & Burkholder 2003a.…”

Section: Dinoflagellate Feeding and Reproductionmentioning

confidence: 99%

Contaminant-free cultivation of Pfiesteria shumwayae (Dinophyceae) on a fish cell line

Parrow¹,

Burkholder²,

Deamer³

et al. 2005

Aquat. Microb. Ecol.

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Geographically distinct strains of the heterotrophic dinoflagellate Pfiesteria shumwayae were cultivated on a fish cell line in the apparent absence of bacteria and other microbial contaminants. Cultures were established with a high rate of success by inoculating single purified P. shumwayae cells into fish cell cultures containing a simple saltwater medium suitable for both cell types, and resulting isolates were serially cultivated on fish cells for months without visible signs of abnormality or reduced viability. P. shumwayae fed phagocytically on the fish cells and exhibited higher cell production than reported using other culturing methods. Compared to previous methods of studying the interaction between Pfiesteria spp. and fishes, this system enabled closer and more direct observation of the dinoflagellates and was also more economical and sustainable as a culturing method. The absence of bacteria and other contaminating microorganisms should facilitate important physiological and biochemical investigations. The methods used were inadequate for cultivating strains of P. piscicida, suggesting a possible difference in nutritional requirements between the 2 Pfiesteria species.

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“…This is a semi-enclosed bay (525 × 300 m) that opens towards the SE. Detailed information on Alexandrium taylori blooms at this location has been previously published (Garcés et al 1998(Garcés et al , 1999(Garcés et al , 2002. Spatial studies were carried out in Arenys Harbour and Olbia Bay (Fig.…”

mentioning

confidence: 99%

Natural bacterioplankton assemblage composition during blooms of Alexandrium spp. (Dinophyceae) in NW Mediterranean coastal waters

Garcés¹,

Vila²,

Reñé³

et al. 2007

Aquat. Microb. Ecol.

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We characterised the spatial and temporal variation in the bacterioplankton assemblage composition during bloom events of different Alexandrium species (Dinophyceae) in the littoral of the NW Mediterranean Sea by means of catalysed reporter deposition fluorescence in situ hybridisation with oligonucleotide probes (CARD-FISH). We studied several Alexandrium blooms through their seasonal development (at La Fosca beach) or in their spatial variability (in Arenys Harbour and Olbia Bay), and we complemented these observations by describing the composition of the bacterial assemblage associated with cultures of Alexandrium species isolated from the same sites. Our studies on natural bacterioplankton assemblages identified the Bacteroidetes lineage and the Alphaproteobacteria as the dominating components during the studied blooms of Alexandrium. Alphaproteobacteria dominated in the La Fosca and Olbia blooms, while bacteria belonging to the Bacteroidetes were abundant in the development phase of the La Fosca beach bloom and in the winter Arenys bloom. Gammaproteobacteria contributed in low proportions without significant changes through the different bloom phases at La Fosca beach and in Olbia Bay, but were more abundant in Arenys Harbour. While the absolute bacterial abundances in the spatial study of Olbia Bay covaried with the Alexandrium densities, there were no spatial changes in the bacterioplankton assemblage composition. Alteromonas-like organisms were never an important fraction of the assemblage, but Roseobacter dominated Alphaproteobacteria in Arenys Harbour. Furthermore, the bacterioplankton assemblages associated with Alexandrium spp. cultures were very different from the natural bacterial assemblages during blooms of the same species. We conclude that the presence of a given harmful algal bloom species during a bloom will not always necessarily be accompanied by the same bacterial assemblage structure, and studies done with dinoflagellate cultures may only reflect the bacteria capable of growing under laboratory conditions, with little resemblance to what occurs under natural conditions. KEY WORDS: FISH · Dinoflagellates · HAB · Alexandrium · Roseobacter · AlteromonasResale or republication not permitted without written consent of the publisher Aquat Microb Ecol 46: 55-70, 2007 ciated with phytoplankton in some field studies (DeLong et al. 1993, González & Moran 1997 and mesocosm experiments (Riemann et al. 2000). These associations may be considered as a form of symbiosis or as a form of specific parasitism (Cole 1982).Driven by the economic and sanitary impacts of harmful algal blooms (HABs), a large research effort is currently underway to understand the ecology of the algal species involved (Granéli & Turner 2006), as well as the effect of the blooming species on other components of the planktonic food web. Of the many factors said to play a role in HAB dynamics, the interactions between algae and bacteria are increasingly being cited (Kodama et al. 2006). In particular, the presence of sp...

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LIFE HISTORY AND IN SITU GROWTH RATES OF ALEXANDRIUM TAYLORI (DINOPHYCEAE, PYRROPHYTA)

Cited by 77 publications

References 32 publications

Drifting plastic debris as a potential vector for dispersing Harmful Algal Bloom (HAB) species

Drifting plastic debris as a potential vector for dispersing Harmful Algal Bloom (HAB) species

Contaminant-free cultivation of Pfiesteria shumwayae (Dinophyceae) on a fish cell line

Natural bacterioplankton assemblage composition during blooms of Alexandrium spp. (Dinophyceae) in NW Mediterranean coastal waters

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