viernes, 23 de junio de 2017

Concedidas las primeras becas de viaje del Fondo Gasterosteus



La Sociedad Ibérica de Ictiología (SIBIC) acaba de conceder dos becas de viaje del Fondo Gasterosteus (con fondos obtenidos de la venta de camisetas entre nuestros socios) para la participación en congresos científicos a dos jóvenes estudiantes socios de SIBIC.
Los beneficiados son nuestro compañero Christoffer Rozenfeld y Alice Manuzzi (Universidad Técnica de Dinamarca). Estas becas de 250 euros cada una, servirán para apoyar a estos dos miembros jóvenes de la SIBIC en la presentación de sus trabajos de investigación en una conferencia internacional. En el caso de Christoffer se tratará del Aquaculture Europe 2017 (Dubrovnic, el próximo octubre), organizado por la Sociedad Europea de Acuicultura.
Estad atentos a la próxima oportunidad de apoyo en 2018!

miércoles, 31 de mayo de 2017

Nuestro último artículo, aceptado en Comparative Biochemistry and Physiology - Part A



Molecular markers of oocyte differentiation in European eel during hormonally induced oogenesis 

I. Rojo-Bartolomé, L. Martínez-Miguel, A.G. Lafont, M.C. Vílchez, J.F. Asturiano, L. Pérez, I. Cancio 

Abstract
Reproduction in captivity is a key study issue in Anguilla anguilla as a possible solution for its dwindling population. Understanding the mechanisms controlling the production of ribosomal building blocks during artificially induced oocyte maturation could be particularly interesting. Transcription levels of ribosomal biogenesis associated genes could be used as markers to monitor oogenesis. Eels from the Albufera Lagoon were injected with carp pituitary extract for 15 weeks and ovaries in previtellogenic (PV) stage (non-injected), in early-, mid-, late-vitellogenesis (EV, MV, LV), as well as in nuclear migration migratory nucleus stage (NMN) were analysed. 5S rRNA and related genes were highly transcribed in ovaries with PV oocytes. As oocytes developed, transcriptional levels of genes related to 5S rRNA production (gtf3a), accumulation (gtf3a, 42sp43) and nucleocytoplasmic transport (rpl5, rpl11) and the 5S/18S rRNA index decreased (PV>EV>MV>LV>MN). On the contrary, 18S rRNA was at its highest at MN stage while ubtf1 in charge of activating RNA-polymerase I and synthesising 18S rRNA behaved as 5S related genes. Individuals that did not respond (NR) to the treatment showed 5S/18S index values similar to PV females, while studied genes showed EV/LV-like transcription levels. Therefore, NR females fail to express the largest rRNAs, which could thus be taken as markers of successful vitellogenesis progression. In conclusion, we have proved that the transcriptional dynamics of ribosomal genes provides useful tools to characterize induced ovarian development in European eels. In the future, such markers should be studied as putative indicators of response to hormonal treatments and of the quality of obtained eel oocytes.

Doi: 10.1016/j.cbpa.2017.05.018
Available here: http://www.sciencedirect.com/science/article/pii/S1095643317301216



martes, 30 de mayo de 2017

Expresión de interés para la incorporación de un postdoc Marie Sklodowska-Curie



Nuestro grupo ha publicado una expresión de interés para la incorporación de un/a investigador/a postdoctoral a través del programa Marie Sklodowska-Curie del H2020.

De entre los candidatos que se hayan presentado hasta el primero de julio, se seleccionará a aquella persona con la que se solicitará un contrato postdoctoral a la UE.

El título del proyecto en que trabajaría la persona contratada es: “Alternative methods for the control of European eel reproduction