5 Works

Data from: Hsp70 protein levels and thermotolerance in Drosophila subobscura: a reassessment of the thermal co-adaptation hypothesis

Gemma Calabria, Olga Dolgova, Carla Rego, Luís E. Castañeda, Enrico L. Rezende, Joan Balanyà, Marta Pascual, Jesper G. Sørensen, Volker Loeschcke & Mauro Santos
Theory predicts that geographic variation in traits and genes associated with climatic adaptation may be initially driven by the correlated evolution of thermal preference and thermal sensitivity. This assumes that an organism’s preferred body temperature corresponds with the thermal optimum in which performance is maximized; hence, shifts in thermal preferences affect the subsequent evolution of thermal-related traits. Drosophila subobscura evolved world-wide latitudinal clines in several traits including chromosome inversion frequencies, with some polymorphic inversions being...

Data from: The origin of modern frogs (Neobatrachia) was accompanied by acceleration in mitochondrial and nuclear substitution rates

Iker Irisarri, Diego San Mauro, Federico Abascal, Annemarie Ohler, Miguel Vences & Rafael Zardoya
BACKGROUND: Understanding the causes underlying heterogeneity of molecular evolutionary rates among lineages is a long-standing and central question in evolutionary biology. Although several earlier studies showed that modern frogs (Neobatrachia) experienced an acceleration of mitochondrial gene substitution rates compared to non-neobatrachian relatives, no further characterization of this phenomenon was attempted. To gain new insights on this topic, we sequenced the complete mitochondrial genomes and nine nuclear loci of one pelobatoid (Pelodytes punctatus) and five neobatrachians,...

Data from: From nature to the labratory: the impact of founder effects in adaptation

Josiane Santos, Marta Pascual, Pedro Simões, Inês Fragata, Margarida Lima, Bárbara Kellen, Marta Santos, Ana Marques, Michael R. Rose & Margarida Matos
Most founding events entail a reduction of population size, which in turn leads to genetic drift effects that can deplete alleles. Besides reducing neutral genetic variability, founder effects can in principle shift additive genetic variance for phenotypes that underlie fitness. This could then lead to different rates of adaptation among populations that have undergone a population size bottleneck as well as an environmental change, even when these populations have a common evolutionary history. Thus theory...

Data from: Molecular phylogeny of unikonts: new insights into the position of apusomonads and ancyromonads and the internal relationships of Opisthokontsí

Jordi Paps, Luis A. Medina-Chacón, Wyth Marshall, Hiroshi Suga & Iñaki Ruiz-Trillo
The eukaryotic supergroup known as the Opisthokonta includes animals (Metazoa), fungi, choanoflagellates, as well as some poorly-studied unicellular eukaryotes, such as the Nucleariidea, Fonticula alba, the Ichthyosporea, the Filasterea and Corallochytrium limacisporum. Whereas the evolutionary positions of the well-known opisthokont lineages are mostly resolved, the specific phylogenetic relationships among those neglected opisthokont lineages is unsettled. Moreover, it remains unclear whether Amoebozoa or Apusozoa are the sister group to opisthokonts. Aiming at elucidating the evolutionary tree...

Data from: Fine-grained adaptive divergence in an amphibian: genetic basis of phenotypic divergence and the role of non-random gene flow in restricting effective migration among wetlands

Alex Richter-Boix, María Quintela, Marcin Kierczak, Marc Franch & Anssi Laurila
Adaptive ecological differentiation among sympatric populations is promoted by environmental heterogeneity, strong local selection and restricted gene flow. High gene flow, on the other hand, is expected to homogenize genetic variation among populations and therefore prevent local adaptation. Understanding how local adaptation can persist at the spatial scale at which gene flow occurs has remained an elusive goal, especially for wild vertebrate populations. Here, we explore the roles of natural selection and nonrandom gene flow...

Registration Year

  • 2012
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Affiliations

  • University of Barcelona
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  • Aarhus University
    1
  • University of Lisbon
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  • University of A Coruña
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  • Museo Nacional de Ciencias Naturales
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  • Swedish University of Agricultural Sciences
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  • Braunschweig University of Art
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  • National Museum of Natural History
    1
  • University of the Azores
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  • Uppsala University
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