39 Works

Data from: Rapid buildup of sympatric species diversity in Alpine whitefish

Carmela J. Doenz, David Bittner, Pascal Vonlanthen, Catherine E. Wagner & Ole Seehausen
Adaptive radiations in postglacial fish offer excellent settings to study the evolutionary mechanisms involved in the rapid buildup of sympatric species diversity from a single lineage. Here, we address this by exploring the genetic and ecological structure of the largest Alpine whitefish radiation known, that of Lakes Brienz and Thun, using microsatellite data of more than 2000 whitefish caught during extensive species‐targeted and habitat‐randomized fishing campaigns. We find six strongly genetically and ecologically differentiated species,...

Data from: Prevalence of disruptive selection predicts extent of species differentiation in Lake Victoria cichlids

Jacco C. Van Rijssel, Florian N. Moser, David Frei & Ole Seehausen
Theory suggests that speciation with gene flow is most likely when both sexual and ecological selection are divergent or disruptive. Divergent sexual and natural selection on the visual system have been demonstrated before in sympatric, morphologically similar, sister species of Lake Victoria cichlids, but this does not explain the subtle morphological differences between them. To investigate the significance of natural selection on morphology during speciation, we here ask whether the prevalence of disruptive ecological selection...

Data from: Numerical response of mammalian carnivores to rodents affects bird reproduction in temperate forests: a case of apparent competition?

Alexander Grendelmeier, Raphaël Arlettaz, Gilberto Pasinelli & Alex Grendelmeier
Resource pulses such as mast seeding in temperate forests may affect interspecific interactions over multiple trophic levels and link different seed and non-seed consumers directly via predation or indirectly via shared predators. However, the nature and strength of interactions among species remain unknown for most resource pulse driven ecosystems. We considered five hypotheses concerning the influence of resource pulses on the interactions between rodents, predators and bird reproduction with data from northern Switzerland collected between...

Data from: Increase in CO2 concentration could alter the response of Hedera helix to climate change

Ruben D. Manzanedo, Juan Ballesteros-Cánovas, Floris Schenk, Markus Stoffel, Markus Fischer & Eric Allan
• Increasing CO2 concentrations ([CO2]) is likely to affect future species distributions, in interaction with other climate change drivers. However, current modelling approaches still seldom consider interactions between climatic factors and the importance of these interactions therefore remains mostly unexplored. • Here, we combined dendrochronological and modelling approaches to study the interactive effects of increasing [CO2] and temperature on the distribution of one of the main European liana species, Hedera helix. We combined a classical...

Data from: Understanding the evolutionary potential of epigenetic variation: a comparison of heritable phenotypic variation in epiRILs, RILs and natural ecotypes of Arabidopsis thaliana

Yuan-Ye Zhang, Vit Latzel, Markus Fischer & Oliver Bossdorf
Increasing evidence for epigenetic variation within and among natural plant populations has led to much speculation about its role in the evolution of plant phenotypes. However, we still have a very limited understanding of the evolutionary potential of epigenetic variation, in particular in comparison to DNA sequence-based variation. To address this question, we compared the magnitudes of heritable phenotypic variation in epigenetic recombinant inbred lines (epiRILs) of Arabidopsis thaliana– lines that mainly differ in DNA...

Data from: The International Tree-Ring Data Bank (ITRDB) revisited: data availability and global ecological representativity

Shoudong Zhao, Neil Pederson, Loïc D'Orangeville, Janneke HilleRisLambers, Emery Boose, Caterina Penone, Bruce Bauer, Yuan Jiang & Rubén D. Manzanedo
Aim: The International Tree-Ring Data Bank (ITRDB) is the most comprehensive database of tree growth. To evaluate its usefulness and improve its accessibility to the broad scientific community, we aimed to: i) quantify its biases, ii) assess how well it represents global forests, iii) develop tools to identify priority areas to improve its representativity, and iv) make available the corrected database. Location: Worldwide. Time period: Contributed datasets between 1974 and 2017. Major taxa studied: Trees....

Data from: Scaling up effects of measures mitigating pollinator loss from local- to landscape-level population responses

David Kleijn, Theo E. W. Linders, Anthonie Stip, Jacobus C. Biesmeijer, Felix L. Wäckers & Tibor Bukovinszky
1. Declining pollinator populations have caused concern about consequences for food production, and have initiated an increasing number of initiatives that aim to mitigate pollinator loss through enhancement of floral resources. Studies evaluating effects of mitigation measures generally demonstrate positive responses of pollinators to floral resource enhancement. However, it remains unclear whether this represents landscape-level population effects or results from a spatial redistribution of individuals from otherwise unaffected populations. 2. Here we present a method...

Data from: Effects of an early-life paraquat exposure on adult resistance to oxidative stress, plumage colour and sperm performance in a wild bird

Sylvain Losdat, Jonathan D. Blount, Viviana Marri, Lea Maronde, Heinz Richner & Fabrice Helfenstein
1. Early-life stressful conditions can shape individual phenotypes and ultimately influence fitness. Oxidative stress is a pervasive threat that affects many fitness-related traits and can modulate life-history trade-offs. Yet, the extent to which exposure to oxidative stress during early life can have long-lasting effects on key fitness-related traits remains to be elucidated, particularly in natural populations of vertebrates. 2. Using a wild population of great tits Parus major, we experimentally dosed 11 day-old birds with...

Data from: Assessing among-lineage variability in phylogenetic imputation of functional trait datasets

Rafael Molin-Venegas, Juan Carlos Moreno-Saiz, Isabel Castro Castro, T. Jonathan Davies, Pedro R. Peres-Neto, Miguel Á. Rodriguez & Rafael Molina-Venegas
Phylogenetic imputation has recently emerged as a potentially powerful tool for predicting missing data in functional traits datasets. As such, understanding the limitations of phylogenetic modelling in predicting trait values is critical if we are to use them in subsequent analyses. Previous studies have focused on the relationship between phylogenetic signal and clade-level prediction accuracy, yet variability in prediction accuracy among individual tips of phylogenies remains largely unexplored. Here, we used simulations of trait evolution...

Data from: Prevalence of sleep-disordered breathing after stroke and TIA: a meta-analysis

Andrea Seiler, Millene Camilo, Lyudmila Korostovtseva, Alan G. Haynes, Anne-Kathrin Brill, Thomas Horvath, Matthias Egger & Claudio L. Bassetti
Objective: To perform a systematic review and meta-analysis on the prevalence of sleep-disordered breathing (SDB) after stroke. Methods: We searched PubMed, Embase (Ovid), the Cochrane Library, and CINAHL (from their commencements to 7th of April 2017) for clinical studies reporting prevalence and/or severity of SDB after stroke or transitory ischemic attack (TIA). Only sleep apnea tests performed with full polysomnography and diagnostic devices of the AASM categories I-IV were included. We conducted random-effects meta-analysis. PROSPERO...

Data from: Genomic insights into the vulnerability of sympatric whitefish species flocks

Philine G.D. Feulner & Ole Seehausen
The erosion of habitat heterogeneity can reduce species diversity directly but can also lead to the loss of distinctiveness of sympatric species through speciation reversal. We know little about changes in genomic differentiation during the early stages of these processes, which can be mediated by anthropogenic perturbation. Here, we analyse three sympatric whitefish species (Coregonus spp) sampled across two neighbouring and connected Swiss pre-alpine lakes, which have been differentially affected by anthropogenic eutrophication. Our data...

Data from: A dense linkage map of Lake Victoria cichlids improved the Pundamilia genome assembly and revealed a major QTL for sex-determination

Philine G.D. Feulner, Julia Schwarzer, Marcel P. Haesler, Joana I. Meier, Ole Seehausen & Philine G. D. Feulner
Genetic linkage maps are essential for comparative genomics, high quality genome sequence assembly and fine scale quantitative trait locus (QTL) mapping. In the present study we identified and genotyped markers via restriction-site associated DNA (RAD) sequencing and constructed a genetic linkage map based on 1,597 SNP markers of an interspecific F2 cross of two closely related Lake Victoria cichlids (Pundamilia pundamilia and P. sp. 'red head'). The SNP markers were distributed on 22 linkage groups...

Data from: Do parasites and antioxidant availability affect begging behaviour, growth rate and resistance to oxidative stress?

Lea Maronde, Sylvain Losdat & Heinz Richner
Early-life trade-offs faced by developing offspring can have long-term consequences for their future fitness. Young offspring use begging displays to solicit resources from their parents and have been selected to grow fast to maximize survival. However, growth and begging behaviour are generally traded-off against self-maintenance. Oxidative stress, a physiological mediator of life-history trade-offs, may play a major role in this trade-off by constraining, or being costly to, growth and begging behaviour. Yet, despite implications for...

Data from: Developing reduced SNP assays from whole-genome sequence data to estimate introgression in an organism with complex genetic patterns, the Iberian honeybee (Apis mellifera iberiensis)

Dora Henriques, Melanie Parejo, Alain Vignal, David Wragg, Andreas Wallberg, Matthew Webster, M. Alice Pinto & Matthew T. Webster
The most important managed pollinator, the honeybee (Apis mellifera L.), has been subject to a growing number of threats. In Western Europe one such threat is large-scale introductions of commercial strains (C-lineage ancestry), which is leading to introgressive hybridization and even the local extinction of native honeybee populations (M-lineage ancestry). Here, we developed reduced assays of highly informative SNPs from 176 whole genomes to estimate C-lineage introgression in the most diverse and evolutionarily complex subspecies...

Data from: Genomics of parallel ecological speciation in Lake Victoria cichlids

Joana Isabel Meier, David Alexander Marques, Catherine Elise Wagner, Laurent Excoffier & Ole Seehausen
The genetic basis of parallel evolution of similar species is of great interest in evolutionary biology. In the adaptive radiation of Lake Victoria cichlid fishes, sister species with either blue or red-back male nuptial coloration have evolved repeatedly, often associated with shallower and deeper water, respectively. One such case are blue and red-backed Pundamilia species, for which we recently showed that a young species pair may have evolved through “hybrid parallel speciation”. Coalescent simulations suggested...

Data from: Integration of two herbivore-induced plant volatiles results in synergistic effects on plant defense and resistance

Lingfei Hu, Meng Ye & Matthias Erb
Plants can use induced volatiles to detect herbivore‐ and pathogen‐attacked neighbors and prime their defenses. Several individual volatile priming cues have been identified, but whether plants are able to integrate multiple cues from stress‐related volatile blends remains poorly understood. Here, we investigated how maize plants respond to two herbivore‐induced volatile priming cues with complementary information content, the green leaf volatile (Z)‐3‐hexenyl acetate (HAC) and the aromatic volatile indole. In the absence of herbivory, HAC directly...

Data from: Evolutionary conserved neural signature of early life stress affects animal social competence

Cecilia Nyman, Stefan Fischer, Nadia Aubin-Horth & Barbara Taborsky
In vertebrates the early social environment can persistently influence behaviour and social competence later in life. However, the molecular mechanisms underlying variation in animal social competence are largely unknown. In rats, high-quality maternal care causes an upregulation of hippocampal glucocorticoid receptors (gr) and reduces offspring stress responsiveness. This identifies gr regulation as a candidate mechanism for maintaining variation in animal social competence. We tested this hypothesis in a highly-social cichlid fish, Neolamprologus pulcher, reared with...

Data from: Biotic predictors complement models of bat and bird responses to climate and tree diversity in European forests

Luc Barbaro, Eric Allan, Evy Ampoorter, Bastien Castagneyrol, Yohan Charbonnier, Hans De Wandeler, Christian Kerbiriou, Harriet Milligan, Aude Vialatte, Monique Carnol, Marc Deconchat, Pallieter De Smedt, Herve Jactel, Julia Koricheva, Isabelle Le Viol, Bart Muys, Michael Scherer-Lorenzen, Kris Verheyen & Fons Van Der Plas
Bats and birds are key providers of ecosystem services in forests. How climate and habitat jointly shape their communities is well studied, but whether biotic predictors from other trophic levels may improve bird and bat diversity models is less known, especially across large bioclimatic gradients. Here, we achieved multi-taxa surveys in 209 mature forests replicated in six European countries from Spain to Finland, to investigate the importance of biotic predictors (i.e., the abundance or activity...

Data from: The onset of ecological diversification 50 years after colonization of a crater lake by haplochromine cichlid fishes

Florian N. Moser, Jacco C. Rijssel, Salome Mwaiko, Joana I. Meier, Benjamin Ngatunga, Ole Seehausen & Jacco C. Van Rijssel
Adaptive radiation research typically relies on the study of evolution in retrospective, leaving the predictive value of the concept hard to evaluate. Several radiations, including the cichlid fish in the East African Great Lakes, have been studied extensively, yet no study has investigated the onset of the intraspecific processes of niche expansion and differentiation shortly after colonization of an adaptive zone by cichlids. Haplochromine cichlids of one of the two lineages that seeded the Lake...

Data from: Differential introgression of a female competitive trait in a hybrid zone between sex-role reversed species

Sara E. Lipshutz, Joana I. Meier, Matthew J. Miller, Graham Derryberry, Ole Seehausen & Elizabeth Perrault Derryberry
Mating behavior between recently diverged species in secondary contact can impede or promote reproductive isolation. Traditionally, researchers focus on the importance of female mate choice and male-male competition in maintaining or eroding species barriers. Although female-female competition is widespread, little is known about its role in the speciation process. Here, we investigate a case of interspecific female competition and its influence on patterns of phenotypic and genetic introgression between species. We examine a hybrid zone...

Data from: What doesn’t kill you makes you stronger: the burdens and benefits of toxin sequestration in a milkweed aphid

Tobias Züst, Sophie Mou & Anurag A. Agrawal
1. Specialized insect herbivores commonly co-opt plant defences for protection against predators, but the costs, benefits, and mechanisms of sequestration are poorly understood. 2. We quantified sequestration of toxic cardenolides by the specialist aphid Aphis nerii when reared on four closely related milkweed (Asclepias) species with >20-fold variation in cardenolide content, and in the presence or absence of ladybug predators. 3. Increasing concentrations of apolar plant cardenolides increased sequestered amounts in aphids. High concentrations in...

Data from: Contrasting responses in community structure and phenology of migratory and non-migratory pollinators to urbanization

Luder Katrin, Eva Knop, Myles H. M. Menz & Katrin Luder
Luder_etal_DivDist_Hoverflies_DataAbundance data for hoverflies collected at urban and rural sites.

Data from: Resting-state gamma-band power alterations in schizophrenia reveal E/I-balance abnormalities across illness-stages

Tineke Grent-'T-Jong, Joachim Gross, Jozien Goense, Michael Wibral, Ruchika Gajwani, Andrew I. Gumley, Stephen M. Lawrie, Matthias Schwannauer, Frauke Schultze-Lutter, Tobias Navarro Schröder, Dagmar Koethe, F. Markus Leweke, Wolf Singer & Peter J. Uhlhaas
We examined alterations in E/I-balance in schizophrenia (ScZ) through measurements of resting-state gamma-band activity in participants meeting clinical high-risk (CHR) criteria (n = 88), 21 first episode (FEP) patients and 34 chronic ScZ-patients. Furthermore, MRS-data were obtained in CHR-participants and matched controls. Magnetoencephalographic (MEG) resting-state activity was examined at source level and MEG-data were correlated with neuropsychological scores and clinical symptoms. CHR-participants were characterized by increased 64–90 Hz power. In contrast, FEP- and ScZ-patients showed...

Data from: Background selection and biased gene conversion affect more than 95% of the human genome and bias demographic inferences

Fanny Pouyet, Simon Aeschbacher, Alexandre Thiéry & Laurent Excoffier
Disentangling the effect on genomic diversity of natural selection from that of demography is notoriously difficult, but necessary to properly reconstruct the history of species. Here, we use high-quality human genomic data to show that purifying selection at linked sites (i.e. background selection, BGS) and GC-biased gene conversion (gBGC) together affect as much as 95% of the variants of our genome. We find that the magnitude and relative importance of BGS and gBGC are largely...

Data from: Wildflower strips enhance pollination in adjacent strawberry crops at the small scale

Dominik Ganser, Barbara Mayr, Matthias Albrecht & Eva Knop
Wildflower strips (WFS) are increasingly used to counteract the negative consequences of agricultural intensification. To date, it is poorly understood how WFS promote flower visitation and pollination services in nearby insect-pollinated crops. We therefore ask whether WFS enhance pollination service in adjacent strawberry crops, and how such an effect depends on the distance from WFS. Over two years we examined the effects of experimentally sown WFS compared to grassy strips on pollination services in adjacent...

Registration Year

  • 2018
    39

Resource Types

  • Dataset
    39

Affiliations

  • University of Bern
    39
  • Swiss Federal Institute of Aquatic Science and Technology
    6
  • University of Freiburg
    4
  • University of Zurich
    3
  • University of Exeter
    3
  • Swiss Institute of Bioinformatics
    2
  • University of Adelaide
    2
  • University of Wyoming
    2
  • University of Toulouse
    2
  • Texas A&M University
    2