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WHO?: Dr. STUART WIGBY (UNIV. OXFORD) WHAT?: Conflict, Competition and Exploitation: a tale of seminal fluid proteins WHEN?: Thursday 26/5/2016 ­ 12:00 h WHERE?: Seminar Room ICBiBE (SS6) ABSTRACT: Sex was traditionally viewed as a cooperative venture, but we now know that a suite of evolutionary conflicts ­ both intrasexual and intersexual underlie sexual reproduction. The cocktail of seminal substances transferred from males to females at mating are on the front line of these conflicts, and have far reaching consequences for the fitness of both sexes.

VII Memorial “Peregrí Casanova” de Biodiversitat i Biologia evolutiva 19/5/2016: HOW DO SPECIES EVOLVE?


WHO?: Prof. ROGER BUTLIN (UNIV. SHEFFIELD) WHAT?: How do species evolve? WHEN?: Thursday 19/5/2016 – 12:30 h WHERE?: Sala “Charles Darwin” (Aulari Farmàcia) ABSTRACT: Evolutionary biology seeks to explain two key features of the living world: adaptation and diversity. Diversity is discontinuous, with organisms falling into more or less distinct clusters in either phenotypic or genotypic space. These clusters are known as species. Their number increases through the splitting of lineages (speciation) and decreases due to extinction: the enormous diversity of life on earth results from a general excess of speciation over extinction. In sexually reproducing organisms, the distinctness of species arises primarily because successful reproduction occurs only among members of the same species and not between individuals of different species. Therefore, the key to understanding speciation is to explain how this restriction, known as ‘reproductive isolation’ evolves. Although reproductive isolation can take many forms, there are only three categories of process involved. Reproductive isolation may be a side-effect of independent evolution or a by-product of divergent selection, or it may be directly favoured by ‘reinforcement’. I will illustrate these three alternatives with examples from grasshoppers, aphids and snails.

Conferència de Roger Butlin sobre l’evolució de noves espècies en el VII Memorial Peregrí Casanova, dijous 19 al Campus de Burjassot-Paterna


Roger Butlin, professor de la Universitat de Sheffield (Regne Unit), pronuncia la conferència ‘How do new species evolve?’ (‘Com evolucionen les noves espècies?’) aquest dijous 19 al Campus de Burjassot-Paterna. L’acte es realitza amb motiu del VII Memorial Peregrí Casanova, en reconeixement a qui va ser catedràtic d’Anatomia i introductor de les idees evolucionistes a la Universitat de València entre finals del XIX i principis del segle XX.

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    WHO?: Dr. GONZALO NIETO FELINER (RJB-CSIC) WHAT?: Evolutionary role of natural hybridization: so close so far, so old so new WHEN?: Thursday 12/5/2016 – 12:00h WHERE?: Sala Seminaris ICBiBE (planta semisoterrani de l’edifici d’instituts) -­‐ SS6 ABSTRACT: The contribution of natural hybridization to generate diversity entails a visible conflict: receiving an ever increasing abundance of hints but facing an everlasting difficulty in being documented whenever it is not a recent process. This conflict is rooted in several elements. One is the openness of hybridization as a process and, as a consequence, the diversity of scenarios and possible outcomes ranging from the formation of a stable hybrid zone to a new hybrid species and from reinforcement to genetic assimilation of one of the hybridizing species. Another element is the speed with which traces may be masked by the dynamism of genomes, which are exacerbated after hybridization due to the so called genomic shock. During the last decades plenty of cases have been unveiled in animal and plant groups mainly from phylogenetic studies. The challenge is trying to validate, sort out and find common elements in such a wealth of potential evidence.

    Bacteris intestinals influeixen en la recuperació immunològica de les persones amb VIH


    Un estudi internacional coordinat per la Fundació per al Foment de la Recerca Sanitària i Biomèdica de la Comunitat Valenciana (FISABIO), la Universitat de València, el Consell Superior d’Investigacions Científiques (CSIC) i l’Hospital Ramón y Cajal ha descobert que un conjunt de bacteris de la microbiota intestinal influeix en la recuperació immunològica de les persones afectades per VIH.

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