Reproducción ovina: factores que influyen y métodos de control

La reproducción de la especie ovina se caracteriza por ser estacional. Si bien las razas que se encuentran en el entorno mediterráneo no presentan una estacionalidad muy marcada, lo cierto es que resulta interesante aplicar métodos para inducir y sincronizar celos con el fin de mejorar la prolificidad, fertilidad y fecundidad. Entre los factores que influyen en la reproducción ovina, se encuentran: el fotoperiodo, la nutrición, el genotipo, la edad, los factores sociales. Los métodos de control de la reproducción de esta especie, pueden ser naturales (efecto macho, flushing), farmacológicos (progesterona, prostaglandinas, melatonina) o mixtos. Por último, se muestra una comparativa de diferentes métodos de control y su efecto sobre la fertilidad y la prolificidad

Parámetros genéticos y respuesta a la selección en una población de gallinas de raza castellana negra

Se presentan los resultados de un programa de mejora genética en tres generaciones de una población de gallinas de la raza Castellana Negra, encaminado a la posible obtención de productos diferenciados. La selección se ha realizado para el peso vivo, la puesta y el peso del huevo. La heredabilidad aparece elevada para el peso vivo (0,83) y el peso del huevo (0,69) y baja para la puesta (0,21). La correlación genética es alta y positiva para el peso vivo con el peso del huevo (0,68), bajas y negativas para el peso vivo con la puesta (-0,15) y para la puesta con el peso del huevo (-0,18). El progreso genético se estima positivo en todos los caracteres, siendo el peso vivo el carácter con mayor progreso genético (198,44 g)

Induced Systemic Resistance (ISR) and Fe Deficiency Responses in Dicot Plants

Plants develop responses to abiotic stresses, like Fe deficiency. Similarly, plants also develop responses to cope with biotic stresses provoked by biological agents, like pathogens and insects. Some of these responses are limited to the infested damaged organ, but other responses systemically spread far from the infested organ and affect the whole plant. These latter responses include the Systemic Acquired Resistance (SAR) and the Induced Systemic Resistance (ISR). SAR is induced by pathogens and insects while ISR is mediated by beneficial microbes living in the rhizosphere, like bacteria and fungi. These root-associated mutualistic microbes, besides impacting on plant nutrition and growth, can further boost plant defenses, rendering the entire plant more resistant to pathogens and pests. In the last years, it has been found that ISReliciting microbes can induce both physiological and morphological responses to Fe deficiency in dicot plants. These results suggest that the regulation of both ISR and Fe deficiency responses overlap, at least partially. Indeed, several hormones and signaling molecules, like ethylene (ET), auxin, and nitric oxide (NO), and the transcription factor MYB72, emerged as key regulators of both processes. This convergence between ISR and Fe deficiency responses opens the way to the use of ISR-eliciting microbes as Fe biofertilizers as well as biopesticides. This review summarizes the progress in the understanding of the molecular overlap in the regulation of ISR and Fe deficiency responses in dicot plants. Root-associated mutualistic microbes, rhizobacteria and rhizofungi species, known for their ability to induce morphological and/or physiological responses to Fe deficiency in dicot plant species are also reviewed herei

Characterization of the human ridged and non-ridged skin: a comprehensive histological, histochemical and immunohistochemical analysis

The structure of the human skin is directly dependent on its location and the mechanical forces to which it is subjected. In the present work, we have performed a comprehensive analysis of the human ridged and non-ridged skin to identify the differences and similarities between both skin types. For this purpose, human skin samples were obtained from dorsal hand skin (DHS), palmar hand skin (PHS), dorsal foot skin (DFS) and plantar foot skin (PFS) from the same cadaveric donors. Histological, histochemical and semiquantitative and quantitative immunohistochemical analyses were carried out to evaluate the epidermis, dermis and basement membrane. Results show that the epithelial layer of ridged skin had larger cell number and size than non-ridged skin for most strata. Melanocytes and Langerhans cells were more abundant in non-ridged skin, whereas Merkel cells were preferentially found in ridged skin. The expression pattern of CK5/6 was slightly differed between non-ridged and ridged skin. Involucrin expression was slightly more intense in non-ridged skin than in ridged skin. Collagen was more abundant in foot skin dermis than in hand skin, and in ridged skin as compared to non-ridged skin. Elastic fibers were more abundant in DHS. Biglycan was more abundant in foot skin than in hand skin. No differences were found for blood and lymphatic vessels. The basement membrane laminin was preferentially found in foot skin. These results revealed important differences at the epithelial, dermal and basement membrane levels that could contribute to a better knowledge of the human skin histology.This work was partially supported by Award no. AC17/00013 (NanoGSkin) by ISCIII thorough AES 2017 and within the EuroNanoMed framework

The Marboré Symphony: music for the deglaciation and Holocene in the central Pyrenees

20th Congress of the International Union for Quaternary Research (INQUA), Dublín, 2019Geological sequences have been used as the main basis for musical pieces both as inspiration for musicians and as raw materials (geochemical data, stratigraphic logs, cycles and frequencies) for compositions produced by computer programs. Telling our stories of Quaternary changes with music presents an opportunity to reach a wider audience and to integrate art and science. Here we present an example of how to compose music from Quaternary lake sequences and illustrate in a new way the main changes in the Pyrenean landscapes since deglaciation. The creation of this music was undertaken within the framework of the REPLIM project, an INTERREG- POCTEFA – project aimed to create a network of climate change observatories on lakes and wetlands in the Pyrenees. Based on the sediment sequence from Marboré Lake (42°41′44.27″N, 0° 2′24.07″E, 2612 m a.s.l), we have selected lithological, compositional and pollen data (Leunda et al, 2017; Oliva et al., 2018) to represent the main changes in the lake and the region during the last 15000 years. To transform the geological data into musical notes, we have used a similar approach than in previous experiences (Simon et al, 2015) but in this case, notes were assigned to compositional range intervals and the tempos were defined using sediment accumulation rates. Different melodies and instruments were assigned at each data set: TOC and Br/Ti as lake bioproductivity, selected pollen data for vegetation dynamics in the valleys, Si/Ti as sediment influx and Pb/Ti as anthropogenic impact. An electronic version of the Marbore Symphony was created by computer software based on the raw data. The music group O’Carolan (http://www.ocarolanfolk.com) transformed the electronic version into a six minutes long acoustic version. The Symphony premiered in the town of Bielsa on December 14th, 2018. The Marboré music project has served to increase citizenship awareness about climate change in the Pyrenees and provided a new tool to better communicate past and future changes in the landscapesInstituto Pirenaico de Ecología, EspañaUniversidad de Zaragoza, EspañaGrupo O´Carolan, EspañaInstituto Geológico y Minero de España, EspañaUniversidad Autonoma de Madrid, EspañaUniversidad del Pais Vasco, Españ

Reducing the environmental impact of surgery on a global scale: systematic review and co-prioritization with healthcare workers in 132 countries

Abstract Background Healthcare cannot achieve net-zero carbon without addressing operating theatres. The aim of this study was to prioritize feasible interventions to reduce the environmental impact of operating theatres. Methods This study adopted a four-phase Delphi consensus co-prioritization methodology. In phase 1, a systematic review of published interventions and global consultation of perioperative healthcare professionals were used to longlist interventions. In phase 2, iterative thematic analysis consolidated comparable interventions into a shortlist. In phase 3, the shortlist was co-prioritized based on patient and clinician views on acceptability, feasibility, and safety. In phase 4, ranked lists of interventions were presented by their relevance to high-income countries and low–middle-income countries. Results In phase 1, 43 interventions were identified, which had low uptake in practice according to 3042 professionals globally. In phase 2, a shortlist of 15 intervention domains was generated. In phase 3, interventions were deemed acceptable for more than 90 per cent of patients except for reducing general anaesthesia (84 per cent) and re-sterilization of ‘single-use’ consumables (86 per cent). In phase 4, the top three shortlisted interventions for high-income countries were: introducing recycling; reducing use of anaesthetic gases; and appropriate clinical waste processing. In phase 4, the top three shortlisted interventions for low–middle-income countries were: introducing reusable surgical devices; reducing use of consumables; and reducing the use of general anaesthesia. Conclusion This is a step toward environmentally sustainable operating environments with actionable interventions applicable to both high– and low–middle–income countries

Educando de otras maneras. Hijos de la tierra : rompe tu silencio

El trabajo obtuvo un premio de la Modalidad B de los Premios Tomás García Verdejo a las buenas prácticas educativas en la Comunidad Autónoma de Extremadura para el curso 2011/2012Se presenta un proyecto que pretende enseñar valores y fomentar el gusto por la lectura con el soporte de las nuevas tecnologías. Se describe la Jornada interdisciplinar 'Hijos de la tierra: rompe tu silencio' que consistió en realizar actividades y talleres relacionados con los temas transversales trabajados a lo largo del curso desde las distintas asignaturas y desde actividades generadas desde la biblioteca del centro, aunque tuvieron como tema central el medioambiente y el fomento de valores como la solidaridad, el respeto, la tolerancia, etcExtremaduraES