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Rato C, Harris DJ, Perera A, Carvalho SB, Carretero MA, Rödder D (2015) A Combination of Divergence and Conservatism in the Niche Evolution of the Moorish Gecko, Tarentola mauritanica (Gekkota: Phyllodactylidae). PLoS ONE 10(5): e0127980. https://doi.org/10.1371/journal.pone.0127980
The quantification of realized niche overlap and the integration of species distribution models (SDMs) with calibrated phylogenies to study niche evolution are becoming not only powerful tools to understand speciation events, but can also be used as proxies regarding the delimitation of cryptic species. We applied these techniques in order to unravel how the fundamental niche evolved during cladogenesis within the Tarentola mauritanica species-complex. Our results suggest that diversification within this complex, during the Miocene and Pleistocene, is associated with both niche divergence and niche conservatism, with a pattern that varies depending on whether the variables involved are related to the mean or seasonality of temperature and humidity. Moreover, climatic variables related to humidity and temperature seasonality were involved in the niche shift and genetic diversification of the European/North African clade during the Pleistocene and in its maintenance in a fundamental niche distinct from that of the remaining members of the group. This study further highlights the need for a taxonomic revision of the T. mauritanica species-complex
What is the most humane way to kill amphibians and small reptiles that are used in research? Historically, such animals were often killed by cooling followed by freezing, but this method was outlawed by ethics committees because of concerns that ice-crystals may form in peripheral tissues while the animal is still conscious, putatively causing intense pain. Leer más.
La conferencia tendrá lugar el próximo martes 2 de junio a las 19:00 en el Museo Nacional de Ciencias Naturales, y en ella se repasarán los problemas y las actuaciones de conservación que hemos llevado a cabo en el Parque desde 1999 en estrecha colaboración con su equipo de gestión. Leer más.
Un estudio del Museo Nacional de Ciencias Naturales revela indicadores efectivos para paliar los efectos de la grave enfermedad que está diezmando las poblaciones de anfibios en todo el mundo: la quitridiomicosis. Según sus resultados, la temperatura del agua y los niveles de la hormona cortisol son claves para la propagación de este trastorno causado por el hongo Batrachochytrium dendrobatidis. Leer más.