38 Works

Data from: Additive genetic variation for tolerance to estrogen pollution in natural populations of Alpine whitefish (Coregonus sp., Salmonidae)

Gregory Brazzola, Nathalie Chèvre & Claus Wedekind
The evolutionary potential of natural populations to adapt to anthropogenic threats critically depends on whether there exists additive genetic variation for tolerance to the threat. A major problem for water-dwelling organisms is chemical pollution, and among the most common pollutants is 17α-ethinylestradiol (EE2), the synthetic estrogen that is used in oral contraceptives and that can affect fish at various developmental stages, including embryogenesis. We tested whether there is variation in the tolerance to EE2 within...

Data from: Seasonality in communication and collective decision-making in ants

Nathalie Stroeymeyt, Caroline Jordan, Gregory Mayer, Sarah Hovsepian, Martin Giurfa & Nigel R. Franks
The ability of animals to adjust their behaviour according to seasonal changes in their ecology is crucial for their fitness. Eusocial insects display strong collective behavioural seasonality, yet the mechanisms underlying such changes are poorly understood. We show that nest preference by emigrating Temnothorax albipennis ant colonies is influenced by a season-specific modulatory pheromone that may help tune decision-making according to seasonal constraints. The modulatory pheromone triggers aversion towards low-quality nests and enhances colony cohesion...

Data from: Automated quantitative histology reveals vascular morphodynamics during Arabidopsis hypocotyl secondary growth

Martial Sankar, Kaisa Nieminen, Laura Ragni, Ioannis Xenarios & Christian S. Hardtke
Among various advantages, their small size makes model organisms preferred subjects of investigation. Yet, even in model systems detailed analysis of numerous developmental processes at cellular level is severely hampered by their scale. For instance, secondary growth of Arabidopsis hypocotyls creates a radial pattern of highly specialized tissues that comprises several thousand cells starting from a few dozen. This dynamic process is difficult to follow because of its scale and because it can only be...

Data from: Male cognitive performance declines in the absence of sexual selection

Brian Hollis & Tadeusz J. Kawecki
Sexual selection is responsible for the evolution of male ornaments and armaments, but its role in the evolution of cognition—the ability to process, retain and use information—is largely unexplored. Because successful courtship is likely to involve processing information in complex, competitive sexual environments, we hypothesized that sexual selection contributes to the evolution and maintenance of cognitive abilities in males. To test this, we removed mate choice and mate competition from experimental populations of Drosophila melanogaster...

Data from: Performance of individual vs group sampling for inferring dispersal under isolation by distance

Natacha Luximon, Eric J. Petit & Thomas Broquet
Models of isolation-by-distance formalize the effects of genetic drift and gene flow in a spatial context where gene dispersal is spatially limited. These models have been used to show that, at an appropriate spatial scale, dispersal parameters can be inferred from the regression of genetic differentiation against geographic distance between sampling locations. This approach is compelling because it is relatively simple and robust, and has rather low sampling requirements. In continuous populations, dispersal can be...

Data from: Geographic variation in sex-chromosome differentiation in the common frog (Rana temporaria)

Nicolas Rodrigues, Juha Merilä, Cécile Patrelle & Nicolas Perrin
In sharp contrast with birds and mammals, sex-determination systems in ectothermic vertebrates are often highly dynamic and sometimes multifactorial. Both environmental and genetic effects have been documented in common frogs (Rana temporaria). One genetic linkage group, mapping to the largest pair of chromosomes and harboring the candidate sex-determining gene Dmrt1, associates with sex in several populations throughout Europe, but association varies both within and among populations. Here we show that sex association at this linkage...

Data from: Origin and genome evolution of polyploid green toads in Central Asia: evidence from microsatellite markers

Caroline Betto-Colliard, Roberto Sermier, Spartak Litvinchuk, Nicolas Perrin & Matthias Stöck
Polyploidization, which is expected to trigger major genomic reorganizations, occurs much less commonly in animals than in plants, possibly because of constraints imposed by sex-determination systems. We investigated the origins and consequences of allopolyploidization in Palearctic green toads (Bufo viridis subgroup) from Central Asia, with three ploidy levels and different modes of genome transmission (sexual versus clonal), to (i) establish a topology for the reticulate phylogeny in a species-rich radiation involving several closely related lineages...

Data from: Inferring the degree of incipient speciation in secondary contact zones of closely related lineages of Palearctic green toads (Bufo viridis subgroup)

Christophe Dufresnes, Lucio Bonato, Nicola Novarini, Caroline Betto-Colliard, Nicolas Perrin & Matthias Stöck
Reproductive isolation between lineages is expected to accumulate with divergence time, but the time taken to speciate may strongly vary between different groups of organisms. In anuran amphibians, laboratory crosses can still produce viable hybrid offspring >20 My after separation, but the speed of speciation in closely related anuran lineages under natural conditions is poorly studied. Palearctic green toads (Bufo viridis subgroup) offer an excellent system to address this question, comprising several lineages that arose...

Data from: Isotopic variation ccross the Audubon’s-myrtle warbler hybrid zone

David P. L. Toews, Alan Brelsford & Darren E. Irwin
Differences in seasonal migratory behaviours are thought to be an important component of reproductive isolation in many organisms. Stable isotopes have been used with success in estimating the location and qualities of disjunct breeding and wintering areas. However, few studies have used isotopic data to estimate the movements of hybrid offspring in species that form hybrid zones. Here, we use stable hydrogen to estimate the wintering locations and migratory patterns of two common and widespread...

Data from: Natural selection in a post-glacial range expansion: the case of the colour cline in the European barn owl

Sylvain Antoniazza, Ricardo Kanitz, Samuel Neuenschwander, Reto Burri, Arnaud Gaigher, Alexandre Roulin & Jérôme Goudet
Gradients of variation – or clines – have always intrigued biologists. Classically, they have been interpreted as the outcomes of antagonistic interactions between selection and gene flow. Alternatively, clines may also establish neutrally with isolation-by-distance or secondary contact between previously isolated populations. The relative importance of natural selection and these two neutral processes in the establishment of clinal variation can be tested by comparing genetic differentiation at neutral genetic markers and at the studied trait....

Data from: First-generation linkage map for the European tree frog (Hyla arborea) with utility in congeneric species

Christophe Dufresnes, Alan Brelsford & Nicolas Perrin
Background: Western Palearctic tree frogs (Hyla arborea group) represent a strong potential for evolutionary and conservation genetic research, so far underexploited due to limited molecular resources. New microsatellite markers have recently been developed for Hyla arborea, with high cross-species utility across the entire circum-Mediterranean radiation. Here we conduct sibship analyses to map available markers for use in future population genetic applications. Findings: We characterized eight linkage groups, including one sex-linked, all showing drastically reduced recombination...

Data from: Sex-chromosome differentiation parallels post-glacial range expansion in European tree frogs (Hyla arborea).

Christophe Dufresnes, Youna Bertholet, Jérôme Wassef, Karim Ghali, Romain Savary, Baptiste Pasteur, Alan Brelsford, Beata Rozenblut-Kościsty, Maria Ogielska, Matthias Stöck & Nicolas Perrin
Occasional XY recombination is a proposed explanation for the sex-chromosome homomorphy in European tree frogs. Numerous laboratory crosses, however, failed to detect any event of male recombination, and a detailed survey of NW-European Hyla arborea populations identified male-specific alleles at sex-linked loci, pointing to the absence of XY recombination in their recent history. Here we address this paradox in a phylogeographic framework, by genotyping sex-linked microsatellite markers in populations and sibships from the entire species...

Data from: Wheat alleles introgress into selfing wild relatives: empirical estimates from Approximate Bayesian Computation in Aegilops triuncialis.

Mila Pajkovic, Sylvain Lappe, Rachel Barman, Christian Parisod, Samuel Neuenschwander, Jerome Goudet, Nadir Alvarez, Robero Guadagnuolo, Francois Felber, Nils Arrigo & Roberto Guadagnuolo
Extensive gene flow between wheat (Triticum sp.) and several wild relatives of the genus Aegilops has recently been detected despite notoriously high levels of selfing in these species. Here, we assess and model the spread of wheat alleles into natural populations of the barbed goatgrass (Aegilops triuncialis), a wild wheat relative prevailing in the Mediterranean flora. Our sampling, based on an extensive survey of 31 Ae. triuncialis populations collected along a 60 km x 20...

Data from: Evolutionary dynamics of interlinked public goods traits: an experimental study of siderophore production in Pseudomonas aeruginosa

Adin Ross-Gillespie, Zoé Dumas & Rolf Kümmerli
Public goods cooperation is common in microbes, and there is much interest in understanding how such traits evolve. Research in recent years has identified several important factors that shape the evolutionary dynamics of such systems, yet few studies have investigated scenarios involving interactions between multiple public goods. Here we offer general predictions about the evolutionary trajectories of two public goods traits having positive, negative or neutral regulatory influence on one another's expression, and we report...

Data from: Molecular proxies for climate maladaptation in a long-lived tree (Pinus pinaster Aiton, Pinaceae)

Juan Pablo Jaramilo-Correa, Isabel Rodríguez-Quilón, Delphine Grivet, Camille Lepoittevin, Federico Sebastiani, Myriam Heuertz, Pauline H. Garnier-Géré, Ricardo Alía, Christophe Plomion, Giovanni G. Vendramin, Santiago C. González-Martínez, J.-P. Jaramillo-Correa, S. C. Gonzalez-Martinez & P. H. Garnier-Gere
Understanding adaptive genetic responses to climate change is a main challenge for preserving biological diversity. Successful predictive models for climate-driven range shifts of species depend on the integration of information on adaptation, including that derived from genomic studies. Long-lived forest trees can experience substantial environmental change across generations, which results in a much more prominent adaptation lag than in annual species. Here, we show that candidate-gene SNPs (Single Nucleotide Polymorphisms) can be used as predictors...

Data from: Social structure varies with elevation in an alpine ant

Jessica Purcell, Loïc Pellissier & Michel Chapuisat
Insect societies vary greatly in social organization, yet the relative roles of ecological and genetic factors in driving this variation remain poorly understood. Identifying how social structure varies along environmental gradients can provide insights into the ecological conditions favouring alternative social organizations. Here, we investigate how queen number variation is distributed along elevation gradients within a socially polymorphic ant, the Alpine silver ant Formica selysi. We sampled low and high elevation populations in multiple Alpine...

Data from: Decoupled post-glacial history in mutualistic plant-insect interactions: insights from the yellow loosestrife (Lysimachia vulgaris) and its associated oil-collecting bees (Macropis europaea and M. fulvipes)

Yann Triponez, Anahí Espíndola, Nils Arrigo & Nadir Alvarez
Aim: We take a comparative phylogeographical approach to assess whether three species involved in a specialized oil-rewarding pollination system (i.e. Lysimachia vulgaris and two oil-collecting bees within the genus Macropis) show congruent phylogeographical trajectories during post-glacial colonization processes. Our working hypothesis is that within specialized mutualistic interactions, where each species relies on the co-occurrence of the other for survival and/or reproduction, partners are expected to show congruent evolutionary trajectories, because they are likely to have...

Data from: Soil fungal communities of grasslands are environmentally structured at a regional scale in the Alps

Loic Pellissier, Hélène Niculita-Hirzel, Anne Dubuis, Marco Pagni, Nicolas Guex, Charlotte Ndiribe, Nicolas Salamin, Ioannis Xennarios, Jerome Goudet, Ian R. Sanders, Antoine Guisan & I. Xenarios
Studying patterns of species distributions along elevation gradients is frequently used to identify the primary factors that determine the distribution, diversity and assembly of species. However, despite their crucial role in ecosystem functioning, our understanding of the distribution of below-ground fungi is still limited, calling for more comprehensive studies of fungal biogeography along environmental gradients at various scales (from regional to global). Here, we investigated the richness of taxa of soil fungi and their phylogenetic...

Data from: Foster care-givers influence brood pathogen resistance in ants

Jessica Purcell & Michel Chapuisat
Social organisms face a high risk of epidemics, and respond to this threat by combining efficient individual and collective defences against pathogens. An intriguing and little studied feature of social animals is that individual pathogen resistance may depend not only on genetic or maternal factors, but also on the social environment during development. Here, we used a cross-fostering experiment to investigate whether the pathogen resistance of individual ant workers was shaped by their own colony...

Data from: Genomics of the divergence continuum in an African plant biodiversity hotspot, I: drivers of population divergence in Restio capensis (Restionaceae)

Christian Lexer, Rafael O. Wüest, Sofia Mangili, Myriam Heuertz, Kai N. Stolting, Peter B. Pearman, Felix Forest, Nicolas Salamin, Niklaus E. Zimmermann & Eligio Bossolini
Understanding the drivers of population divergence, speciation and species persistence is of great interest to molecular ecology, especially for species-rich radiations inhabiting the world’s biodiversity hotspots. The toolbox of population genomics holds great promise for addressing these key issues, especially if genomic data are analyzed within a spatially and ecologically explicit context. We have studied the earliest stages of the divergence continuum in the Restionaceae, a species-rich and ecologically important plant family of the Cape...

Data from: Signs of a vector’s adaptive choice: on the evasion of infectious hosts and parasite-induced mortality

Fardo Witsenburg, Franziska Schneider & Philippe Christe
Laboratory and field experiments have demonstrated in many cases that malaria vectors do not feed randomly, but show important preferences either for infected or non-infected hosts. These preferences are likely in part shaped by the costs imposed by the parasites on both their vertebrate and dipteran hosts. However, the effect of changes in vector behaviour on actual parasite transmission remains a debated issue. We used the natural associations between a malaria-like parasite Polychromophilus murinus, the...

Data from: Screening primary-care patients forgoing health care for economic reasons

Patrick Bodenmann, Bernard Favrat, Hans Wolff, Idris Guessous, Francesco Panese, Lilli Herzig, Thomas Bischoff, Alejandra Casillas, Thomas Golano & Paul Vaucher
Background: Growing social inequities have made it important for general practitioners to verify if patients can afford treatment and procedures. Incorporating social conditions into clinical decision-making allows general practitioners to address mismatches between patients’ health-care needs and financial resources. Objectives: Identify a screening question to, indirectly, rule out patients’ social risk of forgoing health care for economic reasons, and estimate prevalence of forgoing health care and the influence of physicians’ attitudes toward deprivation. Design: Multicenter...

Data from: Origin, acquisition and diversification of heritable bacterial endosymbionts in louse flies and bat flies

Olivier Duron, Boris Droz, Arnaud Berthomieu & Steven M. Goodman
The γ-proteobacterium Arsenophonus and its close relatives (Arsenophonus and like organisms, ALOs) are emerging as a novel clade of endosymbionts, which are exceptionally widespread in insects. The biology of ALOs is, however, in most cases entirely unknown, and it is unclear how these endosymbionts spread across insect populations. Here, we investigate this aspect through the examination of the presence, the diversity and the evolutionary history of ALOs in 25 related species of blood-feeding flies: tsetse...

Data from: Stick insect genomes reveal natural selection's role in parallel speciation

Victor Soria-Carrasco, Zachariah Gompert, Aaron A. Comeault, Timothy E. Farkas, Thomas L. Parchman, J. Spencer Johnston, C. Alex Buerkle, Jeffrey L. Feder, Jens Bast, Tanja Schwander, Scott P. Egan, Bernard J. Crespi & Patrik Nosil
Natural selection can drive the repeated evolution of reproductive isolation, but the genomic basis of parallel speciation remains poorly understood. We analyzed whole-genome divergence between replicate pairs of stick insect populations that are adapted to different host plants and undergoing parallel speciation. We found thousands of modest-sized genomic regions of accentuated divergence between populations, most of which are unique to individual population pairs. We also detected parallel genomic divergence across population pairs involving an excess...

Data from: Social chromosome variants differentially affect queen determination and the survival of workers in the fire ant Solenopsis invicta

Séverine D. Buechel, Yannick Wurm & Laurent Keller
Intraspecific variation in social organization is common, yet the underlying causes are rarely known. An exception is the fire ant Solenopsis invicta in which the existence of two distinct forms of social colony organization is under the control of the two variants of a pair of social chromosomes, SB and Sb. Colonies containing exclusively SB/SB workers accept only one single queen and she must be SB/SB. By contrast, when colonies contain more than 10% of...

Registration Year

  • 2014
    38

Resource Types

  • Dataset
    38

Affiliations

  • University of Lausanne
    38
  • Swiss Institute of Bioinformatics
    6
  • French National Centre for Scientific Research
    4
  • Swiss Federal Institute for Forest, Snow and Landscape Research
    3
  • University of Neuchâtel
    2
  • Institute of Biosciences and Bioresources
    2
  • National Autonomous University of Mexico
    2
  • University of Zurich
    2
  • Grenoble Alpes University
    2
  • Uppsala University
    2