8 Works

Data from: The genetic basis and experimental evolution of inbreeding depression in Caenorhabditis elegans

Ivo M. Chelo, S. Carvalho, M. Roque, S. R. Proulx & Henrique Teotónio
Determining the genetic basis of inbreeding depression is important for understanding the role of selection in the evolution of mixed breeding systems. Here, we investigate how androdioecy (a breeding system characterized by partial selfing and outcrossing) and dioecy (characterized by obligatory outcrossing) influence the experimental evolution of inbreeding depression in Caenorhabditis elegans. We derived inbred lines from ancestral and evolved populations and found that the dioecious lineages underwent more extinction than androdioecious lineages. For both...

Data from: Steep clines within a highly permeable genome across a hybrid zone between two subspecies of the European rabbit

Miguel Carneiro, Stuart J. E. Baird, Sandra Afonso, Esther Ramirez, Pedro Tarroso, Henrique Teotonio, Rafael Villafuerte, Michael W. Nachman & Nuno Ferrand
Maintenance of genetic distinction in the face of gene flow is an important aspect of the speciation process. Here, we provide a detailed spatial and genetic characterization of a hybrid zone between two subspecies of the European rabbit. We examined patterns of allele frequency change for 22 markers located on the autosomes, X-chromosome, Y-chromosome, and mtDNA in 1078 individuals sampled across the hybrid zone. While some loci revealed extremely wide clines (w>=300 km) relative to...

Data from: A DNA metabarcoding study of a primate dietary diversity and plasticity across its entire fragmented range

Erwan Quéméré, Fabrice Hibert, Christian Miquel, Emeine Lhuillier, Emmanuel Rasolondraibe, Julie Champeau, Clément Rabarivola, Louis Nusbaumer, Cyrille Chatelain, Laurent Gautier, Patrick Ranirison, Brigitte Crouau-Roy, Pierre Taberlet, Lounès Chikhi & Emeline Lhuillier
In tropical regions, most primary ecosystems have been replaced by mosaic landscapes in which species must cope with a large shift in the distribution of their habitat and associated food resources. Primates are particularly vulnerable to habitat modifications. Most species persist in small fragments surrounded by complex human-mediated matrices whose structure and connectivity may strongly influence their dispersal and feeding behavior. Behavioral plasticity appears to be a crucial parameter governing the ability of organisms to...

Data from: Positive epistasis drives the acquisition of multidrug resistance.

Sandra Trindade, Ana Sousa, Karina Bivar Xavier, Francisco Dionisio, Miguel Godinho Ferreira & Isabel Gordo
The evolution of multiple antibiotic resistance is an increasing global problem. Resistance mutations are known to impair fitness, and the evolution of resistance to multiple drugs depends both on their costs individually and on how they interact—epistasis. Information on the level of epistasis between antibiotic resistance mutations is of key importance to understanding epistasis amongst deleterious alleles, a key theoretical question, and to improving public health measures. Here we show that in an antibiotic-free environment...

Data from: Evolution of thorax architecture in ant castes highlights trade-off between flight and ground behaviors

Roberto A. Keller, Christian Peeters & Patrícia Beldade
The concerted evolution of morphological and behavioral specializations has compelling examples in ant castes. Unique to ants is a marked divergence between winged queens and wingless workers, but morphological specializations for behaviors on the ground have been overlooked. We analyzed thorax morphology of queens and workers in species from 21 of the 25 ant subfamilies. We uncovered unique skeletomuscular modifications in workers that presumably increase power and flexibility of head–thorax articulation, emphasizing that workers are...

Data from: Size variation, growth strategies and the evolution of modularity in the mammalian skull

Arthur Porto, Leila Teruko Shirai, Felipe Bandoni De Oliveira & Gabriel Marroig
Allometry is a major determinant of within-population patterns of association among traits and, therefore, a major component of morphological integration studies. Even so, the influence of size variation over evolutionary change has been largely unappreciated. Here, we explore the interplay between allometric size variation, modularity, and life history strategies in the skull from representatives of 35 mammalian families. We start by removing size variation from within-species data and analyzing its influence on integration magnitudes, modularity...

Data from: Rates of fitness decline and rebound suggest pervasive epistasis

L. Perfeito, A. Sousa, T. Bataillon & I. Gordo
Unraveling the factors that determine the rate of adaptation is a major question in evolutionary biology. One key parameter is the effect of a new mutation on fitness, which invariably depends on the environment and genetic background. The fate of a mutation also depends on population size, which determines the amount of drift it will experience. Here, we manipulate both population size and genotype composition and follow adaptation of 23 distinct Escherichia coli genotypes. These...

Data from: The demographic history of populations experiencing asymmetric gene flow: combining simulated and empirical data.

Ivan Paz Viñas, Erwan Quéméré, Lounès Chikhi, Géraldine Loot & Simon Blanchet
Population structure can significantly affect genetic-based demographic inferences, generating spurious bottleneck-like signals. Previous studies have typically assumed island or stepping-stone models, which are characterized by symmetric gene flow. However, many organisms are characterized by asymmetric gene flow. Here, we combined simulated and empirical data to test whether asymmetric gene flow affects the inference of past demographic changes. Through the analysis of simulated genetic data with three methods (i.e. bottleneck, M-ratio and msvar), we demonstrated that...

Registration Year

  • 2013
    8

Resource Types

  • Dataset
    8

Affiliations

  • Instituto Gulbenkian de Ciência
    8
  • Institut National de la Recherche Agronomique
    2
  • Centre national de la recherche scientifique
    1
  • Université de Mahajanga
    1
  • Institute for Game and Wildlife Research
    1
  • University of Toulouse
    1
  • Aarhus University
    1
  • University of Lisbon
    1
  • Washington University in St. Louis
    1
  • French National Centre for Scientific Research
    1