14 Works

Data from: Small-scale patterns in snowmelt timing affect gene flow and the distribution of genetic diversity in the alpine dwarf shrub Salix herbacea

Andrés J. Cortés, Stephan Waeber, Christian Lexer, Janosch Sedlacek, Julia A. Wheeler, Mark Van Kleunen, Oliver Bossdorf, Günter Hoch, Christian Rixen, Sonja Wipf & Sophie Karrenberg
Current threats to biodiversity, such as climate change, are thought to alter the within-species genetic diversity among microhabitats in highly heterogeneous alpine environments. Assessing the spatial organization and dynamics of genetic diversity within species can help to predict the responses of organisms to environmental change. In this study, we evaluated whether small-scale heterogeneity in snowmelt timing restricts gene flow between microhabitats in the common long-lived dwarf shrub Salix herbacea L. We surveyed 273 genets across...

Data from: Structural alterations of the social brain: a comparison between schizophrenia and autism

Daniel Radeloff, Angela Ciaramidaro, Sabine Schlitt, Sven Bölte, Fritz Poustka, Daniela Hainz, Bernhard Weber, Michael Siniatchkin, Henrik Walter & Christine Margarete Freitag
Autism spectrum disorder and schizophrenia share a substantial number of etiologic and phenotypic characteristics. Still, no direct comparison of both disorders has been performed to identify differences and commonalities in brain structure. In this voxel based morphometry study, 34 patients with autism spectrum disorder, 21 patients with schizophrenia and 26 typically developed control subjects were included to identify global and regional brain volume alterations. No global gray matter or white matter differences were found between...

Data from: An SNP-based second-generation genetic map of Daphnia magna and its application to QTL analysis of phenotypic traits

Jarkko Routtu, Matthew D. Hall, Brian Albere, Christian Beisel, R. Daniel Bergeron, Anurag Chaturvedi, Jeong-Hyeon Choi, John Colbourne, Luc De Meester, Melissa T. Stephens, Claus-Peter Stelzer, Eleanne Solorzano, W. Kelley Thomas, Michael E. Pfrender & Dieter Ebert
Background: Although Daphnia is increasingly recognized as a model for ecological genomics and biomedical research, there is, as of yet, no high-resolution genetic map for the genus. Such a map would provide an important tool for mapping phenotypes and assembling the genome. Here we estimate the genome size of Daphnia magna and describe the construction of an SNP array based linkage map. We then test the suitability of the map for life history and behavioural...

Data from: Conservation action based on threatened species capture taxonomic and phylogenetic richness in breeding and wintering populations of Central Asian birds

Manuel Schweizer, Raffael Ayé, Roman Kashkarov & Tobias Roth
Although phylogenetic diversity has been suggested to be relevant from a conservation point of view, its role is still limited in applied nature conservation. Recently, the practice of investing conservation resources based on threatened species was identified as a reason for the slow integration of phylogenetic diversity in nature conservation planning. One of the main arguments is based on the observation that threatened species are not evenly distributed over the phylogenetic tree. However this argument...

Data from: Adaptive divergence between lake and stream populations of an East African cichlid fish

Anya Theis, Fabrizia Ronco, Adrian Indermaur, Walter Salzburger & Bernd Egger
Divergent natural selection acting in different habitats may build up barriers to gene flow and initiate speciation. This speciation continuum can range from weak or no divergence to strong genetic differentiation between populations. Here, we focus on the early phases of adaptive divergence in the East African cichlid fish Astatotilapia burtoni, which occurs both in Lake Tanganyika and inflowing rivers. We first assessed the population structure and morphological differences in A. burtoni from southern Lake...

Data from: Parasitic mites influence intra- and interpopulational variation in sperm length in a simultaneous hermaphrodite land snail (Gastropoda: Helicidae)

Ellen Haeussler, Denes Schmera & Bruno Baur
Sperm morphology can be highly variable among species, but less is known about patterns of population differentiation within species. Sperm morphology is under strong sexual selection, may evolve rapidly, and often co-varies with other reproductive traits that differ between populations. We investigated variation in sperm morphology in the simultaneous hermaphrodite land snail Arianta arbustorum in relation to parasitic mite infection. Variation in total sperm length and sperm head length was assessed in 23 populations sampled...

Data from: Genetic architecture of resistance in Daphnia hosts against two species of host-specific parasites

Jarkko Routtu & Dieter Ebert
Understanding the genetic architecture of host resistance is key for understanding the evolution of host–parasite interactions. Evolutionary models often assume simple genetics based on few loci and strong epistasis. It is unknown, however, whether these assumptions apply to natural populations. Using a quantitative trait loci (QTL) approach, we explore the genetic architecture of resistance in the crustacean Daphnia magna to two of its natural parasites: the horizontally transmitted bacterium Pasteuria ramosa and the horizontally and...

Data from: Diet quality determines interspecific parasite interactions in host populations

Benjamin Lange, Max Reuter, Dieter Ebert, Koenraad Muylaert & Ellen Decaestecker
The widespread occurrence of multiple infections and the often vast range of nutritional resources for their hosts allow that interspecific parasite interactions in natural host populations might be determined by host diet quality. Nevertheless, the role of diet quality with respect to multispecies parasite interactions on host population level is not clear. We here tested the effect of host population diet quality on the parasite community in an experimental study using Daphnia populations. We studied...

Data from: Paternal signature in kin recognition cues of a social insect: concealed in juveniles, revealed in adults

Janine W. Y. Wong, Joël Meunier, Christophe Lucas, Mathias Kölliker & M. Kolliker
Kin recognition is a key mechanism to direct social behaviours towards related individuals or avoid inbreeding depression. In insects, recognition is generally mediated by cuticular hydrocarbon (CHC) compounds, which are partly inherited from parents. However, in social insects, potential nepotistic conflicts between group members from different patrilines are predicted to select against the expression of patriline-specific signatures in CHC profiles. Whereas this key prediction in the evolution of insect signalling received empirical support in eusocial...

Data from: Cues of maternal condition influence offspring selfishness

Janine W. Y. Wong, Christophe Lucas & Mathias Kölliker
The evolution of parent-offspring communication was mostly studied from the perspective of parents responding to begging signals conveying information about offspring condition. Parents should respond to begging because of the differential fitness returns obtained from their investment in offspring that differ in condition. For analogous reasons, offspring should adjust their behavior to cues/signals of parental condition: parents that differ in condition pay differential costs of care and, hence, should provide different amounts of food. In...

Data from: Fluorescent sperm in a transparent worm: validation of a GFP marker to study sexual selection

Lucas Marie-Orleach, Tim Janicke, Dita B. Vizoso, Micha Eichmann & Lukas Schärer
Background: Sexual selection has initially been thought to occur exclusively at the precopulatory stage in terms of contests among males and female mate choice, but research over the last four decades revealed that it often continues after copulation through sperm competition and cryptic female choice. However, studying these postcopulatory processes remains challenging because they occur internally and therefore are often difficult to observe. In the transparent free-living flatworm Macrostomum lignano, a recently established transgenic line...

Data from: Diversity and disparity through time in the adaptive radiation of Antarctic notothenioid fishes

Marco Colombo, Malte Damerau, Reinhold Hanel, Walter Salzburger & Michael Matschiner
According to theory, adaptive radiation is triggered by ecological opportunity that can arise through the colonization of new habitats, the extinction of antagonists or the origin of key innovations. In the course of an adaptive radiation, diversification and morphological evolution are expected to slow down after an initial phase of rapid adaptation to vacant ecological niches, followed by speciation. Such ‘early bursts’ of diversification are thought to occur because niche space becomes increasingly filled over...

Data from: Inbreeding within human Schistosoma mansoni: do host- specific factors shape the genetic composition of parasite populations?

Frederik Van Den Broeck, Lynn Meurs, Joost A. M. Raeymaekers, Nele Boon, Tandakha N. Dieye, Filip A. M. Volckaert, Katja Polman & Tine Huyse
The size, structure and distribution of host populations are key determinants of the genetic composition of parasite populations. Despite the evolutionary and epidemiological merits, there has been little consideration of how host heterogeneities affect the evolutionary trajectories of parasite populations. We assessed the genetic composition of natural populations of the parasite Schistosoma mansoni in northern Senegal. A total of 1346 parasites were collected from 14 snail and 57 human hosts within three villages and individually...

Data from: Effects of food restriction across stages of juvenile and early adult development on body weight, survival, and adult life history

Janine W. Y. Wong & Mathias Kölliker
Organisms have to allocate limited resources among multiple life-history traits, which can result in physiological trade-offs, and variation in environmental conditions experienced during ontogeny can influence reproduction later in life. Food restriction may lead to an adaptive reallocation of the limited resources among traits as a phenotypically plastic adjustment, or it can act as an overall constraint with detrimental effects throughout reproductive life. In this study, we investigated experimentally the effects of food restriction during...

Registration Year

  • 2014
    14

Resource Types

  • Dataset
    14

Affiliations

  • University of Basel
    14
  • KU Leuven
    3
  • François Rabelais University
    2
  • National University of Uzbekistan
    1
  • Augusta University
    1
  • Naturhistorisches Museum
    1
  • University of Fribourg
    1
  • Johannes Gutenberg University of Mainz
    1
  • University College London
    1
  • University of Tübingen
    1