A5068794557- Diatoms and Algae Research
- Marine Toxins and Detection Methods
- Marine and coastal ecosystems
- Marine Biology and Ecology Research
- Microbial Community Ecology and Physiology
- Marine Biology and Environmental Chemistry
- Aquatic Ecosystems and Phytoplankton Dynamics
- Environmental Chemistry and Analysis
- Protist diversity and phylogeny
- Water Quality Monitoring and Analysis
- Cephalopods and Marine Biology
- Environmental Toxicology and Ecotoxicology
- Marine Invertebrate Physiology and Ecology
- Animal Ecology and Behavior Studies
- Analytical chemistry methods development
- Water Resource Management and Quality
- Potato Plant Research
- Nicotinic Acetylcholine Receptors Study
- Marine and fisheries research
- Mollusks and Parasites Studies
- Medicinal Plants and Neuroprotection
- Coastal and Marine Dynamics
- Calcium Carbonate Crystallization and Inhibition
- Marine Sponges and Natural Products
- Paleontology and Stratigraphy of Fossils
Universidad Nacional de La Plata
2012-2025
Consejo Nacional de Investigaciones Científicas y Técnicas
2011-2024
Centro Científico Tecnológico - San Juan
2010-2018
Centro Científico Tecnológico - La Plata
2015-2017
Centro Científico Tecnológico - Tucumán
1970-2014
Observatoire Océanologique de Banyuls-sur-Mer
2010
Global trends in the occurrence, toxicity and risk posed by harmful algal blooms to natural systems, human health coastal economies are poorly constrained, but widely thought be increasing due climate change nutrient pollution. Here, we conduct a statistical analysis on global dataset extracted from Harmful Algae Event Database Ocean Biodiversity Information System for period 1985-2018 investigate temporal frequency distribution of marine blooms. We find no uniform trend number events their...
As a part of monitoring program harmful microalgae in the coastal waters Buenos Aires Province, two strains chain-forming Gymnodinium species (Dinophyceae), LPCc043 and LPCc044, were isolated from samples collected Samborombón Bay. This study aims to provide morphological, phylogenetic toxicological characterization strains. Among marine species, only G. catenatum impudicum are known form algal blooms (HAB). Morphological analysis with light electron scanning microscopy (LM, SEM) revealed...
Resumen.-El género Chaetoceros es un componente importante del plancton marino, de amplia distribución mundial en términos diversidad y biomasa.El presente trabajo está abocado a la morfología, taxonomía las especies pertenecientes al encontradas aguas costeras marinas Provincia Buenos Aires, Argentina.Las muestras fitoplanctónicas fueron recolectadas desde noviembre 1994 hasta septiembre 2000 siete estaciones ubicadas lo largo costa bonaerense entre los paralelos 36º20' 37°20' S. El...
This study describes the diversity of species belonging to diatom families Thalassionemataceae Round and Rhaphoneidaceae Forti frequently found in temperate marine coastal waters Buenos Aires Province, Argentina, from October 1994 September 2000.It comprises morphological, taxonomic distributional analysis planktonic samples collected at San Clemente del Tuyú, Santa Teresita, La Lucila Mar, Mar de Ajó, Nueva Atlantis, Pinamar Villa Gesell.Raw cleaned were analysed with light scanning...
Dinophysis spp.
A partir de un monitoreo microalgas toxígenas y toxinas en moluscos iniciado 2008, llevado a cabo entre San Clemente del Tuyú Mar Azul (Zona Norte) la Bahía Anegada Sur) Provincia Buenos Aires fueron registrados cuatro brotes toxicidad por toxina paralizante (PSP) ocho lipofílicas (DSP/no determinadas). Los resultados obtenidos empleados como herramienta técnica dela cual autoridad aplicación (Dirección Provincial Pesca Ministerio Asuntos Agrarios Aires) fundó decisión imponer once vedas una...
The morphology and taxonomy of species the genera Cocconeis Ehrenberg Psammococconeis Garcia from Gulf San Matías (Patagonia, Argentina) is documented in present study. A total 16 taxa one were found surface net hauls taken shallow coastal waters Gulf. fluminensis var. fluminensis, C. subimpleta, guttata, peltoides neothumensis marina are new records for southwestern Atlantic Ocean.
Colonies that could be identified as Thalassiosira rotula, others gravida and colonies with a mixture of the valve structures these two species were found coexisting in same samples from Piedras Coloradas (40°50′46″S, 65°06′18″W). Net collected surface water at several stations northern area San Matías Gulf Río Negro Province, Argentina, April 1998 to May 2000 March 2006 2007. Untreated cleaned diatom examined using light scanning electron microscopy. The differential features used...
This study deals with the morphology, taxonomy and distribution of species belonging to diatom genus Thalassiosira found in marine waters along northern coast San Matias Gulf, Argentina. Net samples were collected from surface layer water column at Punta Orengo, Las Garzas, Banco Reparo, Los Alamos, Grutas, Piedras Coloradas, Bajo de Oliveira El Fuerte April 1998 February 2000. Untreated cleaned examined by light scanning electron microscopy. Eighteen taxa identified. T. frenguelliopsis is...
Abstract The present paper describes the morphology, taxonomy, and distribution of species belonging to diatom genera Rhizosolenia s. str., Neocalyptrella, Pseudosolenia Proboscia, found in marine coastal waters Buenos Aires Province, Argentina. phytoplankton samples were collected from October 1994 September 2000 at seven locations analyzed by light scanning electron microscopy. antennata f. antennata, R. bergonii, hyalina, imbricata, setigera setigera, pungens, Neocalyptrella robusta,...
In the framework of a monitoring program harmful microalgae from marine coastal waters Buenos Aires Province, seven strains were isolated and characterized by morphological molecular analysis (LSU rDNA partial sequencing, D1–D3 regions). Established belonged to Alexandrium catenella, Protoceratium reticulatum Pseudo-nitzschia multiseries. The toxinological profile target determined UHPLC-FLD equipment for paralytic shellfish toxins (PSTs) LC-MS/MS lipophilic (LSTs) amnesic (ASTs). toxin...
Diatoms responsible for harmful events in other geographic areas, found the coastal waters of San Matías Gulf (Río Negro Province, Argentina), were studied.Materials collected two sampling stations related to natural banks and cultures bivalves: Las Grutas Piedras Coloradas.Two potentially toxigenic taxa 18 non found.Despite that some these occasionally abundant plankton area, none them caused evident discolorations or detectable effects during study period.
While conducting surveys of marine phytoplankton from coastal waters the Anegada Bay (Province Buenos Aires, Argentina) we found several eupodiscoid diatoms belonging to genus Odontella sensu lato. Raw and cleaned samples collected at Los Pocitos, Ría del Jabalí San Blas between 2008 2010, were analyzed with light scanning electron microscopy. Based on a morphological analysis, species loculate areolae ocellus-bearing elevations are included in genera Trieres (T. mobiliensis T. sinensis)...
In the framework of a phytoplankton and biotoxin monitoring program implemented since 2008 in marine coastal waters Buenos Aires Province (Argentina), gymnodinioid, photosynthetic dinoflagellate was isolated from sample collected Santa Teresita, establishing strain LPCc007. The identified as belonging to psammophilic genus Togula by light microscopy based on following distinctive characters: morphology cell dorso-ventrally flattened, course cingulum, highly asymmetric, descending, with its...
Sar E.A., Sunesen I. and Jahn R. 2010. Coscinodiscus perforatus revisited compared with radiatus (Bacillariophyceae). Phycologia 49: 514–524. DOI: 10.2216/09-03.1The present study is devoted to the morphology, taxonomy distribution of Ehrenberg Ehrenberg. was erected by on basis sediment material collected from Richmond, Virginia. Subsequently, several authors considered this taxon a synonym C. radiatus. An examination type carried out scanning electron microscopy lecto- epitype were chosen....
The type material of seven taxa Pleurosigma W. Smith were studied, including P. atlanticum Heiden & Kolbe, chilense Hustedt Krasske, chilensis var. patagonica Ferrario Sar, indicum Simonsen, intermedium Smith, nubecula and simonsenii Hasle. All these are mainly characterized by a straight or almost valve outline. fine morphology the specimens is studied compared with similar taxa, appropriate taxonomic changes proposed. examined included lectotypes atlanticum, holotypes from Friedrich Center...
A new species of the marine dinophyte genus Heterocapsa Stein is described. Two clonal strains originating from Argentinean coastal waters were examined with light and electron microscopy LSU ITS rDNA sequence data obtained. claromecoensis sp. nov. described as a distinctive conical epitheca, similar sized rounded hypotheca, single reticulate chloroplast situated in periphery cell, large pyrenoid episome, above an ellipsoidal to nucleus hyposome. The plate tabulation pattern Po (pore plate),...
Two strains of Prorocentrum texanum (LPCc020 and LPCc032) were established from coastal waters the Province Buenos Aires, Argentina. Field cultured materials examined using light scanning electron microscopy, planktonic species texanum, a known okadaic acid producer, was identified. We compared morphology, genetics toxin profile P. based on material Argentina in relation to Gulf México. Our specimens those described protologue var. had similar shape, thecal ornamentation distribution...
Sceptronema orientale was found epizoic on the harpacticoid copepod Euterpina acutifrons (Dana) collected from several locations along Bahía Anegada, Province of Buenos Aires, Argentina. Material examined with light and scanning electron microscopy new data about morphology chloroplast ultrastructural details girdle, valves, apical slit fields rimoportulae pattern were obtained. Based this knowledge descriptions species monotypic genus are emended. Considering that in protologue three...