The ecology and evolution of diurnal butterflies is the central axis of the last doctoral thesis promoted at the UB under the direct masters of Professor Ramon Margalef (1919-2004), the first professor of Ecology in all of Spain. The work, defended by Albert Masó at the Faculty of Biology last January, has contributed to testing Professor Margalef’s hypotheses on the influence of vegetation on butterflies and, especially, on cell duplication as a macroevolutionary process that generates new species . L’ecologia i l’evolució de les papallones diürnes is the central eix of the last doctoral thesis promoted at the UB under the direct mestratge of professor Ramon Margalef (1919-2004), the first catedràtic d’Ecologia a tot l ‘ Spanish status. The treball, defended by Albert Masó to the Faculty of Biology el gener passat, has contributed to verify the hypotheses of Professor Margalef about the influence of vegetation in the pallions and, in particular, on cell duplication with a macroevolutionary generative process. of noves species.
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This thesis – the latest research directly inspired by Singapore Email List Ramon Margalef – is divided into two parts. The first describes the research that the author carried out in the geographical area of the Montseny massif to check whether the vegetation determined the characteristics of the butterfly community, as well as to investigate some biological traits of some species. The work served to rule out that these Lepidopterans show a deterministic dependence on the vegetation and, furthermore, that the specific composition of the vegetation has a predictive character with respect to that of the butterfly community. In addition, In the second part, Albert Masó confirms another of Professor Margalef’s hypotheses, which considers the phenomenon of the doubling of the number of cells in the butterfly wing as a possible mechanism of evolution and biological diversification.
The results provided, the result of a meticulous investigation in collections of the main natural history museums, indicate a clear association between the size of the wings and the number of scales. On the other hand, the distribution of wing sizes within phylogenetically related assemblages clusters around values that suggest wing surface duplications associated with duplications in the number of scales. These duplications would therefore be a discontinuous mechanism of evolution, an idea that always fascinated Margalef and that is supported by these results. In the course of the doctoral work, the management task started by Professor Margalef was continued by Professors Javier Romero – Margalef’s disciple and member of the Faculty of Biology and the Biodiversity Research Institute of the UB ( IRBio ) – and Joaquín Baixeras, member of the Cavanilles Institute of Biodiversity and Evolutionary Biology of the University of Valencia. Professor