27 research outputs found
New morphological and molecular evidence confirm the presence of the Norwegian skate Dipturus nidarosiensis (Storm, 1881) in the Mediterranean Sea and extend its distribution to the western basin
The present study confirms the presence of the Norwegian skate Dipturus nidarosiensis (Storm, 1881) in the Mediterranean Sea, by means of morphological traits and molecular markers providing the first record of this species in the Alboran Sea. Cannas et al. (2010) reported D. nidarosiensis for the first time in the Mediterranean from specimens captured in the central western basin, but Ebert & Stehmann (2013) and Stehmann et al. (2015) considered these records "likely refer to the smaller morphotype, Dipturus sp.", a species not yet described. Eight specimens of the Dipturus genus (Rajiformes: Rajidae) were caught off the Alboran Island (western Mediterranean) in 2012, 2013 and 2016, between 620 and 819 m depth. These specimens showed morphometric diagnostic features corresponding to those of Norwegian skates from the Northeast Atlantic and the central western Mediterranean Sea. Moreover, the Alboran individuals were genetically compared to Northeast Atlantic specimens available in GenBank by means of two mitochondrial DNA fragments: cytochrome c oxidase subunit I (COI) and cytochrome b (Cytb). Analyses showed that the Northeast Atlantic Norwegian skate specimens and the Alboran Sea ones were genetically similar and shared haplotypes, corroborating the identification of the Alboran individuals as Dipturus nidarosiensis. However, they were different from other Dipturus species distributed throughout the Northeast Atlantic and the Mediterranean Sea. Our results confirm the occurrence of this deep-sea large skate species in the Mediterranean, although the IUCN Red List of Threatened Species does not consider it possible (Stehmann et al., 2015)Versión del edito
Proyecto «Capacidad Profesional Docente en Extremadura» (CPDEx), una nueva visión de los Centros educativos extremeños
El Proyecto CPDEx es una nueva estrategia para mejora la respuesta educativa que los Centros extremeños ofrecen a su alumnado. Se trata de mejorar la educación
fortaleciendo la profesión, a partir de la integración de las competencias personales del profesorado, las competencias institucionales de los Centros, y el modo en que los
Centros gestionan el conocimiento profesional y la cultura escolar
Improving Scientific Knowledge of Mallorca Channel Seamounts (Western Mediterranean) within the Framework of Natura 2000 Network
The scientific exploration of Mallorca Channel seamounts (western Mediterranean) is
improving the knowledge of the Ses Olives (SO), Ausias March (AM), and Emile Baudot (EB)
seamounts for their inclusion in the Natura 2000 network. The aims are to map and characterize
benthic species and habitats by means of a geological and biological multidisciplinary approach:
high-resolution acoustics, sediment and rock dredges, beam trawl, bottom trawl, and underwater
imagery. Among the seamounts, 15 different morphological features were differentiated, highlighting
the presence of 4000 pockmarks, which are seafloor rounded depressions indicators of focused
fluid flow escapes, usually gas and/or water, from beneath the seabed sediments. So far, a total of
547 species or taxa have been inventoried, with sponges, fishes, mollusks, and crustaceans the most
diverse groups including new taxa and new geographical records. Up to 29 categories of benthic
habitats have been found, highlighting those included in the Habitats Directive: maërl beds on the
summits of AM and EB, pockmarks around the seamounts and coral reefs in their rocky escarpments
as well as fields of Isidella elongata on sedimentary bathyal bottoms. Trawling is the main demersal
fishery developed around SO and AM, which are targeted to deep water crustaceans: Parapenaeus
longirostris, Nephrops norvegicus, and Aristeus antennatus. This study provides scientific information
for the proposal of the Mallorca Channel seamounts as a Site of Community Importance and for its
final declaration as a Special Area of Conservation
Ética profesional en educación superior : finalidades, estrategias y desafíos de la formación
Todo proyecto educativo que no responde a su época se expone a problemas de legitimidad y al duro escrutinio y sanción de los usuarios. Las instituciones de educación superior no son la excepción de esta premisa clásica, incluso más validada por eldinamismos, la versatilidad y ojo crítico en el mundo contemporáneo. La ética se ha convertido en el baremo principal para someter a juicio a las instituciones y a las personas que ahí actuan, como a las finalidades que se pretenden en sus acciones. En esta perspectiva, debe examinarse la función de las instituciones de educación superior.Este libro es el esfuerzo colectivo por acercarnos a esa problemática, en especial a las finalidades, estrategias y relaciones en juego para cumplir la tarea de la formación y sus nexos inevitables con la ética profesional
Retrospective evaluation of whole exome and genome mutation calls in 746 cancer samples
Funder: NCI U24CA211006Abstract: The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) curated consensus somatic mutation calls using whole exome sequencing (WES) and whole genome sequencing (WGS), respectively. Here, as part of the ICGC/TCGA Pan-Cancer Analysis of Whole Genomes (PCAWG) Consortium, which aggregated whole genome sequencing data from 2,658 cancers across 38 tumour types, we compare WES and WGS side-by-side from 746 TCGA samples, finding that ~80% of mutations overlap in covered exonic regions. We estimate that low variant allele fraction (VAF < 15%) and clonal heterogeneity contribute up to 68% of private WGS mutations and 71% of private WES mutations. We observe that ~30% of private WGS mutations trace to mutations identified by a single variant caller in WES consensus efforts. WGS captures both ~50% more variation in exonic regions and un-observed mutations in loci with variable GC-content. Together, our analysis highlights technological divergences between two reproducible somatic variant detection efforts