18 Works

Data from: Epistasis and maternal effects in experimental adaptation to chronic nutritional stress in Drosophila

Tadeusz J. Kawecki & Roshan Kumar Vijendravarma
Based on ecological and metabolic arguments some authors predict that adaptation to novel, harsh environments should involve alleles showing negative (diminishing return) epistasis and/or that it should be mediated in part by evolution of maternal effects. While the first prediction has been supported in microbes, there has been little experimental support for either prediction in multicellular eukaryotes. Here we use a line-cross design to study the genetic architecture of adaptation to chronic larval malnutrition in...

Data from: MHC class I expression dependent on bacterial infection and parental factors in whitefish embryos (Salmonidae)

Emily S. Clark, Laetitia G. E. Wilkins & Claus Wedekind
Ecological conditions can influence not only the expression of a phenotype, but also the heritability of a trait. As such, heritable variation for a trait needs to be studied across environments. We have investigated how pathogen challenge affects the expression of MHC genes in embryos of the lake whitefish Coregonus palaea. In order to experimentally separate paternal (i.e. genetic) from maternal and environmental effects, and determine whether and how stress affects the heritable variation for...

Data from: Human cooperation based on punishment reputation

Miguel Dos Santos, Daniel J. Rankin & Claus Wedekind
The threat of punishment usually promotes cooperation. However, punishing itself is costly, rare in non-human animals, and humans who punish often finish with low payoffs in economic experiments. The evolution of punishment has therefore been unclear. Recent theoretical developments suggest that punishment has evolved in the context of reputation games. We tested this idea in a simple helping game with observers and with punishment and punishment reputation (experimentally controlling for other possible reputational effects). We...

Data from: Variation in thermal performance and reaction norms among populations of Drosophila melanogaster

Peter Klepsatel, Martina Galikova, Nicola De Maio, Christian D. Huber, Christian Schlötterer & Thomas Flatt
The major goal of evolutionary thermal biology is to understand how variation in temperature shapes phenotypic evolution. Comparing thermal reaction norms among populations from different thermal environments allows us to gain insights into the evolutionary mechanisms underlying thermal adaptation. Here, we have examined thermal adaptation in six wild populations of the fruit fly (Drosophila melanogaster) from markedly different natural environments by analyzing thermal reaction norms for fecundity, thorax length, wing area and ovariole number under...

Data from: Pupal cocoons affect sanitary brood care and limit fungal infections in ant colonies

Simon Tragust, Line V. Ugelvig, Michel Chapuisat, Jürgen Heinze & Sylvia Cremer
Background: The brood of ants and other social insects is highly susceptible to pathogens, particularly those that penetrate the soft larval and pupal cuticle. We here test whether the presence of a pupal cocoon, which occurs in some ant species but not in others, affects the sanitary brood care and fungal infection patterns after exposure to the entomopathogenic fungus Metarhizium brunneum. We use a) a comparative approach analysing four species with either naked or cocooned...

Data from: Conservation phylogeography: does historical diversity contribute to regional vulnerability in European tree frogs (Hyla arborea)

Christophe Dufresnes, Jérôme Wassef, Karim Ghali, Alan Brelsford, Matthias Stöck, Petros Lymberakis, Jelka Crnobrnja-Isailović & Nicolas Perrin
Documenting and preserving the genetic diversity of populations, which conditions their long-term survival, has become a major issue in conservation biology. The loss of diversity often documented in declining populations is usually assumed to result from human disturbances; however, historical biogeographic events, otherwise known to strongly impact diversity, are rarely considered in this context. We apply a multi-locus phylogeographic study to investigate the late-Quaternary history of a tree frog (Hyla arborea) with declining populations in...

Data from: Within-population polymorphism of sex-determination systems in the common frog (Rana temporaria)

Nicolas Rodrigues, Caroline Betto-Colliard, Hélène Jourdan-Pineau & Nicolas Perrin
In sharp contrast with birds and mammals, the sex chromosomes of ectothermic vertebrates are often undifferentiated, for reasons that remain debated. A linkage map was recently published for Rana temporaria (Linnaeus, 1758) from Fennoscandia (Eastern European lineage), with a proposed sex-determining role for linkage group 2 (LG2). We analysed linkage patterns in lowland and highland populations from Switzerland (Western European lineage), with special focus on LG2. Sibship analyses showed large differences from the Fennoscandian map...

Data from: Homologous sex chromosomes in three deeply divergent anuran species

Alan Brelsford, Matthias Stöck, Caroline Betto-Colliard, Sylvain Dubey, Christophe Dufresnes, Hélène Jourdan-Pineau, Nicolas Rodrigues, Romain Savary, Roberto Sermier & Nicolas Perrin
Comparative genomic studies are revealing that, in sharp contrast with the strong stability found in birds and mammals, sex determination mechanisms are surprisingly labile in cold-blooded vertebrates, with frequent transitions between different pairs of sex chromosomes. It was recently suggested that, in context of this high turnover, some chromosome pairs might be more likely than others to be co-opted as sex chromosomes. Empirical support, however, is still very limited. Here we show that sex-linked markers...

Data from: Neutral and selection-driven decay of sexual traits in asexual stick insects

Tanja Schwander, Bernard J. Crespi, Regine Gries & Gerhard Gries
Environmental shifts and lifestyle changes may result in formerly adaptive traits becoming non-functional or maladaptive. The subsequent decay of such traits highlights the importance of natural selection for adaptations, yet its causes have rarely been investigated. To study the fate of formerly adaptive traits after lifestyle changes, we evaluated sexual traits in five independently derived asexual lineages, including traits that are specific to males and therefore not exposed to selection. At least four of the...

Data from: Maternal and paternal contributions to pathogen resistance dependent on development stage in a whitefish (Salmonidae)

Emily S. Clark, Manuel Pompini, Lucas Marques Da Cunha & Claus Wedekind
1. It is often assumed that maternal and paternal contributions to offspring phenotype change over the lifetime of an individual. However, studies on parental effects typically suffer from the problems that heritabilities and maternal environmental effects are difficult to separate, and that both may depend on environmental factors and developmental stage 2. In order to experimentally disentangle maternal from paternal contributions and the likely effects of developmental stage from ecological effects, we sampled a natural...

Data from: Tracking individuals shows spatial fidelity is a key regulator of ant social organization

Danielle P. Mersch, Alessandro Crespi & Laurent Keller
Ants live in organized societies with a marked division of labor among workers, but little is known about how this is generated. We use a tracking system to continuously monitor individually-tagged workers in six colonies of the ant Camponotus fellah over 41 days. Network analyses of over 9 million interactions revealed three distinct groups that differ in behavioral repertoires. Each group represents a functional behavioral unit with workers moving from one group to the next...

Data from: Corticosterone regulates multiple colour traits in Lacerta [Zootoca] vivipara males

Luis M. San-Jose & Patrick S. Fitze
Ornamental colours usually evolve as honest signals of quality, which is supported by the fact that they frequently depend on individual condition. It has generally been suggested that some, but not all types of ornamental colours are condition dependent, indicating that different evolutionary mechanisms underlie the evolution of multiple types of ornamental colours even when these are exhibited by the same species. Stress hormones, which negatively affect condition, have been shown to affect colour traits...

Data from: Disentangling the effects of key innovations on the diversification of Bromelioideae (Bromeliaceae)

Daniele Silvestro, Georg Zizka & Katharina Schulte
The evolution of key innovations, novel traits that promote diversification, is often seen as major driver for the unequal distribution of species richness within the tree of life. In this study, we aim to determine the factors underlying the extraordinary radiation of the subfamily Bromelioideae, one of the most diverse clades among the neotropical plant family Bromeliaceae. Based on an extended molecular phylogenetic data set, we examine the effect of two putative key innovations, that...

Data from: Stronger transferability but lower variability in transcriptomic- than in anonymous microsatellites: evidence from Hylid frogs.

Christophe Dufresnes, Alan Brelsford, Paul Beziers & Nicolas Perrin
A simple way to quickly optimize microsatellites in non-model organisms is to re-use loci available in closely related taxa; however, this approach can be limited by the stochastic and low cross-amplification success experienced in some groups (e.g. amphibians). An efficient alternative is to develop loci from transcriptome sequences. Transcriptomic microsatellites have been found to vary in their levels of cross-species amplification and variability, but this has to date never been tested in amphibians. Here, we...

Data from: Evolutionary and dispersal history of Eurasian wild mice Mus musculus clarified by more extensive geographic sampling of mitochondrial DNA

Hitoshi Suzuki, Mitsuo Nunome, Ghota Kinotshita, K. P. Aplin, Peter Vogel, Alexey P. Kryukov, Mei-Lei Jin, Sang-Hoon Han, Ibnu Maryanto, Kimiyuki Tsuchiya, Hidetoshi Ikeda, T. Shiroishi, Hiromichi Yonekawa & Kazuo Moriwaki
We examined sequence variation of mitochondrial DNA control region and cytochrome b gene of the house mouse (Mus musculus sensu lato) drawn from ca. 200 localities, with 290 new samples drawn primarily from previously unsampled portions of their Eurasian distribution and with the objective of further clarifying evolutionary episodes of this species before and after the onset of human-mediated long-distance dispersals. Phylogenetic analysis of the expanded data detected five equally distinct clades, with geographic ranges...

Data from: Reconstructing the origins of high-alpine niches and cushion life form in the genus Androsace s.l. (Primulaceae)

Florian C. Boucher, Wilfried Thuiller, Cristina Roquet, Rolland Douzet, Serge Aubert, Nadir Alvarez & Sebastien Lavergne
Relatively few species have been able to colonize extremely cold alpine environments. We investigate the role played by the cushion life form in the evolution of climatic niches in the plant genus Androsace s.l., which spreads across the mountain ranges of the Northern Hemisphere. Using robust methods that account for phylogenetic uncertainty, intraspecific variability of climatic requirements and different life history evolution scenarios, we show that climatic niches of Androsace s.l. exhibit low phylogenetic signal...

Data from: Spatio-temporal transcript profiling of rice roots and shoots in response to phosphate starvation and recovery

David Secco, Mehdi Jabnoune, Hayden Walker, Huixia Shou, Ping Wu, Yves Poirier & James Whelan
Using rice (Oryza sativa) as a model crop species, we performed an in-depth temporal transcriptome analysis, covering the early and late stages of Pi deprivation as well as Pi recovery in roots and shoots, using next-generation sequencing. Analyses of 126 paired-end RNA sequencing libraries, spanning nine time points, provided a comprehensive overview of the dynamic responses of rice to Pi stress. Differentially expressed genes were grouped into eight sets based on their responses to Pi...

Data from: Pleiotropy in the melanocortin system: expression levels of this system are associated with melanogenesis and pigmentation in the tawny owl (Strix aluco)

Guillaume Emaresi, Hannes Richter, Anne-Lyse Ducrest, Pierre Bize, Celine Simon & Alexandre Roulin
The adaptive function of melanin-based coloration is a long-standing debate. A recent genetic model suggested that pleiotropy could account for covariations between pigmentation, behaviour, morphology, physiology and life history traits. We explored whether the expression levels of genes belonging to the melanocortin system (MC1R, POMC, PC1/3, PC2 and the antagonist ASIP), which have many pleiotropic effects, are associated with melanogenesis (through variation in the expression of the genes MITF, SLC7A11, TYR, TYRP1) and in turn...

Registration Year

  • 2013
    18

Resource Types

  • Dataset
    18

Affiliations

  • University of Lausanne
    18
  • Leibniz Institute of Freshwater Ecology and Inland Fisheries
    2
  • Swiss Institute of Bioinformatics
    1
  • Zhejiang University
    1
  • National Museum of Natural History
    1
  • University of Crete
    1
  • Shanghai CASB Biotechnology (China)
    1
  • Tokyo Metropolitan Institute of Medical Science
    1
  • Senckenberg Nature Research Society
    1
  • Centre of Excellence in Plant Energy Biology
    1