1,017 research outputs found

    An Overview of the Distribution of the Parabathynellidae (Crustacea, Syncarida Bathynellacea) on the Iberian Peninsula and Balearic Islands

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    [EN] This paper reviews all the knowledge on the presence and distribution of 26 species of the family Parabathynellidae Noodt, 1964 (Crustacea, Syncarida, Bathynellacea) on the Iberian Peninsula and Balearic Islands. The different genera, subgenera and species distributions are subjected to a basic analysis. The presence of these taxa in different subterranean aquatic habitats (caves, springs, wells and interstitial environment) is also discussed. The most sampled habitat was the interstitial environment (45%); the least sampled habitat was springs (5%). The most commonly found genus was Iberobathynella Schminke, 1973 (54%) and the rarest was Guadalopebathynella Camacho & Serban, 1998 (0.7%) All the knowledge on these taxa in the study area, in Europe and in the world is compared and evaluated. More species of the Parabathynellidae live on the Iberian Peninsula and Balearic Islands than in any other part of the world (26 species). Iberobathynella is a highly diversified genus endemic to the Iberian peninsula. Its diversity is comparable to another genus in the order, Hexabathynella Schminke, 1972, which also has 18 described species. However, Hexabathynella has a cosmopolitan distribution.[ES] En este trabajo se reune y actualiza el conocimiento acerca de la presencia y distribución de 26 especies de batinelas de la familia Parabathynellidae (Crustacea, Syncarida, Bathynellacea) en la Peninsula Ibérica y las Islas Baleares. Se analiza de forma crítica la distribución de los diferentes géneros, subgéneros y especies y se discute acerca de la presencia de los mismos en diferentes habitat acuáticos subterráneos (cuevas, fuentes o surgencias, pozos y medio intersticial asociado a ríos epigeos). El mayor número de puntos de muestreo corresponde al medio intersticial (45% del total) y en él se encuentran los cinco géneros presentes en el área de estudio; las surgencias constituyen el conjunto con menos puntos de muestreo (5%) y en ellas solo se encuentran los géneros Iberobathynella (86%) y Hexaiberobathynella Camacho & Serban, 1998 (14%). El género Iberobathynella es el más común (54% de las muestras) y vive en todos los medios. El género Guadalopebathynella sólo se ha encontrado en el medio intersticial de un río. Se valora comparativamente el conocimiento de estos taxa en el área estudiada, en Europa y en el mundo. En la Península Ibérica y las Islas Baleares vive el mayor porcentaje de especies de todo el mundo (24%) y todas ellas son endémicas de esta zona. El género Iberobathynella, endémico de la Península Ibérica, cuenta con 18 especies conocidas y tal diversificación sólo se da, en todo el orden, dentro del género Hexabathynella (18 especies) que es el único género cosmopolita de Bathynellacea.This work was supported by projects REN2000-2040 GLO, EVK2-CT-2001- 00121 (PASCALIS) and Convenio Junta de Castilla y León- CSIC (2002-2004).Peer reviewe

    Elisa Bello (1960-2008). In memoriam

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    2 páginas.-- Necrológica.Peer reviewe

    Los Batinelaceos (Crustacea, Syncarida) recogidos en la Península Ibérica

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    20 paginas, 5 figuras, 8 tables..[EN] in this paper the list of sampling station where 12 species of the famil)" Parabathynellidae have been found is detailed, 10 species of Iberobathynella genus and 2 species of Hexabathynella genus from which this is the first time that the last genus mentioned has appeared in Spain. Data on presence of batinelas in the samples from the different groundwaters environments studied are analyzed, just as the abundance of species and specimens. Finally the distribution of each species found in the Iberían Peninsula is analyzed.[ES] En el presente trabajo se detalla la lista de estaciones donde han sido encontradas 12 especies de la familia Parabathynellidae, 10 del genero Iberobathyne/la y 2 del género Hexabathynella, este último encontrado por primera vez en España. Se analizan los datos sobre la presencia de batinelas en las muestras de los diferentes medios estudiados (aguas subterráneas de pozos, cuevas y simas y del medio intersticial asociado a ríos) así como la abundancia de especies y ejemplares en las mismas. Por último se analiza la distribución de cada una de las especies encontradas en la Península Ibérica.Peer reviewe

    Iberian Peninsula and Balearic Island Bathynellacea (Crustacea, Syncarida) database

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    This is the first published database of Bathynellacea. It includes all data of bathynellids (Crustacea, Bathynellacea) collected in the last 64 years (1949 to 2013) on the Iberian Peninsula and Balearic Island. Te samples come from groundwater (caves, springs, wells and hyporrheic habitat associated rivers) from both sampling campaigns and occasional sampling conducted throughout the Iberian Peninsula and Balearic Islands. Te dataset lists occurrence data of bathynellids distribution, sampling sites (with localities, county and geographic coordinates), taxonomic information (from family to species level) and sampling sources (collector and sampling dates) for all records. Te descriptions of new species and species identifications have been carried out by an expert taxonomist (AIC) with 25 years experience in the bathynellids studies (see references). Many of the sampling sites are type localities of endemic species from Iberian Peninsula. Te dataset includes 409 samples record corresponding to two families, 12 genera and 58 species, 42 of them formally described plus 16 taxa unpublished and 47 samples in study. All species known from the study area are included, which nearly sum up a quarter of species of Bathynellacea known in the world (250 species).This work was supported by project CGL2010-15786 MICINN

    Enfermedades por inmunosupresión asociadas al virus de la leucemia felina

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    Este trabajo trata de resaltar la importancia del síndrome de inmunosupresión/mielosupresión inducido por el virus de la leucemia felina (FeLV), frente a la patología tumoral más característica y divulgada. Se realiza una revisión de las principales enfermedades asociadas a este síndrome citosupresivo, diagnosticándose por primera vez la asociación clínica de coccidiosis (Cystoisospora felis) y de FeLV en una colonia de gatos afectados porFeLV. Finalmente, se comentan los aspectos más destacados del tratamiento y prevención de esta importante virosis felinaThe aim of this work is to highlight the clinical relevance of the immunosupressive/myelosupressive syndrome induced by the feline leukemia virus (FeLV) as oposed to the better known and reported tumoral pathology. The main diseases associated to this cytosupressive syndrome are revised, reporting for the first time the clinical association between FeLV and feline coccidiosis (Cystoisospora felis) in a FeLV affected cattery. Finally, we comment on the more relevant aspects about treatment and prevention of this major feline virosis

    Impact of texture TDS and flavour TDS tasks and of chocolate-chip biscuit characteristics on oral processing features

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    [EN] The objective of the present study was to investigate differences in oral activity when biscuits of the same type but with subtle composition differences are consumed and how performing a Temporal Dominance of Sensations (TDS) task modifies the way one eats. In addition, comparisons were made between performing a texture TDS (T-TDS) and a flavour TDS (F-TDS). Oral activity while eating biscuits with and without conducting a TDS task was recorded using a 3.dimensional motion capture system to monitor the evolution of jaw movements. The results showed that oral activity evolved over the consumption time, differed depending on the texture of the sample and was affected to a small but significant extent when a TDS task was performed simultaneously (the differences averaged < 4 cycles, 1 s in duration, 0.1 cycles/s in frequency, and 1 mm in lateral displacement). The biscuit samples were affected equally. Almost no differences were found on comparing oral activity during the execution of the T-TDS and the F-TDS tasks. Overall, the present results show differences in oral activity even for food products of the same category with subtle differences in composition. Performing TDS tasks (regardless of their modality) during sample consumption affected the total number, frequency and lateral amplitude of the chewing movements which should be taken into account for future research. However, these differences were small and affected both samples equally.The authors are grateful to the Spanish Ministry of the Economy and Competitiveness (AGL-2016-75403-R, Spain) and to the Regional Government of Valencia (Project Prometeo 2017/189, Spain) for financial support.Rizo, A.; Jimenez-Pérez, I.; Camacho-García, A.; Fiszman, S.; Pérez-Soriano, P.; Tarrega, A. (2019). Impact of texture TDS and flavour TDS tasks and of chocolate-chip biscuit characteristics on oral processing features. Food Quality and Preference. 76:109-117. https://doi.org/10.1016/j.foodqual.2019.04.005S1091177

    Characterization of plant growth promoting bacteria isolated from red fruits. Studies on growth promotion and fruit quality in strawberry plants

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    Microorganisms associated to the rizosphere of plants cultivated plants for human consumption are scarcely analyzed. However,nowadays, organic farming  where the use of microbial inoculants is essential, has arisenas emergent alternative with a great commercial interest.In this study, the characterization of the bacterial microbiotic presents in the rhizosphere of strawberry and blueberry plants has been carried out. In particular, three relevant characteristics have been determined order  to classify he isolated strains as plant growth promoting bacteria (PGPB). These characteristics are: 1) the ability to produce auxins, 2) siderophores and 3)  the solubilization of phosphates presents in the medium.On the other hand, the behavior of bacterial strains previously identified as PGPB has been studied in strawberry plants  both in greenhouse and field trials. The plants located in the greenhouse, were inoculated with the endophytic strawberries isolated strains: LTE1, LTE2, LTE3, LTE4, LTE6, EF12a, EF35 and EF113, as well as with three blueberries insolated bacteria which possess a high leves of auxin production, named AC8, ACH2 and ACH7. The strawberries plants located in the field, were inoculated with the strains Hv16, Hvs8 and Rec3.At the greenhouse trials, production parameters (precocity in flowering, number and weight of fruits) as well as biometrical parameters at the end of the trial, the fresh and dry weigth of root and shoots will be analyzed. At the field trial, the following production parameters will be evaluated: number and weight of extra-early fruit (February), number and weight of early fruit (March) and number and weight of total fruit. Quality fruit parameters as color, shape, sugar content (ºBrix), acidity, pH, vitamin C and anthocyanin content will be determined twice, once in February and again at the end of the experiment. By the time, the micro and macro-nutrient will also be analyzaed

    Four-body continuum-discretized coupled-channels calculations using a transformed harmonic oscillator basis

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    The scattering of a weakly bound three-body system by a target is discussed. A transformed harmonic oscillator basis is used to provide an appropriate discrete and finite basis for treating the continuum part of the spectrum of the projectile. The continuum-discretized coupled channels framework is used for the scattering calculations. The formalism is applied to different reactions, 6He+12C at 229.8 MeV, 6He+64Zn at 10 and 13.6 MeV, and 6He+208Pb at 22 MeV, induced by the Borromean nucleus 6He. Both the Coulomb and nuclear interactions with a target are taken into account.Comment: Published in Phys. Rev.

    Habitat Constraints in Epikarstic Waters of an Iberian Peninsula Cave System

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    14 páginas, 6 figuras, 11 tables et al..The epikarstic waters of a restricted sector of the Ojo Guareña cave (north Iberian Peninsula) were investigated to characterize the physico-chemical variation in an annual cycle, to improve the scarce knowledge of the aquatic cave fauna on the Iberian Peninsula, to look for distribution patterns of species per habitat along the annual cycle, and to search for the environmental basis (either physico- or hydro-geochemical) that could explain species distribution in the epikarst. The habitats studied included all puddles and gours present in the sector selected making a total of 51 chemical and 42 biological samples for the entire cycle. The waters show no appreciable contaminationand exhibit small chemical variations throughout the year which are patently affected by external weather conditions. The 53 taxa found belong to ten higher taxonomic groups (Oligochaeta, Turbellaria, Mollusca, Copepoda, Ostracoda, Isopoda, Bathynellacea, Tardigrada, Acarina and Cnidaria), and consist mainly of crustacea with a total of 27 species. Fourteen species were stygobionts (belonging to ten genera), nine of which are new to science and ten of which are endemic. Cave pools that appeared to be more stable in terms of water volume and mineralization, had a lower pCO2 and were carbonate oversaturated, harboured the greatest number of taxa. It is these pools that can maintain strictly cave dwelling species. Pools with lower levels of mineralization and greater water volume fluctuations had a lower diversity of fauna and in general lacked stygobiotic species.Projects PASCALIS EVK2-CT-2001-00121; Convenio Junta de Castilla y León-CSIC (2002-2004) and BTE2002-04492-C02-02.Peer reviewe

    Three-body continuum discretization in a basis of transformed harmonic oscillator states

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    The inclusion of the continuum in the study of weakly-bound three-body systems is discussed. A transformed harmonic oscillator basis is introduced to provide an appropriate discrete and finite basis for treating the continuum part of the spectrum. As examples of the application of the method the strength functions corresponding to several operators that couple the ground state to the continuum are investigated, for 6He, and compared with previous calculations. It is found that the energy moments of these distributions are accurately reproduced with a small basis set.Comment: 12 figures, submitted to PR
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