39 Works

Full-factorial breeding experiment with lake char (Lake Geneva, winter 2017/2018)

Laura Garaud, David Nusbaumer, Christian De Guttry, Laurie Ançay, Stéphan Jacquet, Emilien Lasne & Claus Wedekind
We sampled 16 wild lake char (Salvelinus umbla) and used their gametes to investigate the genetic consequences of different mating scenarios. A full-factorial breeding was used to separate additive genetic from maternal environmental effects, and embryos were raised singly after sublethal exposures to a pathogen, a common pollutant, or water only. In all treatment groups, embryo development was strongly reduced with increased genetic relatedness between the parents. Contrary to predictions of ‘good genes’ sexual selection,...

Density-dependent selection and the maintenance of colour polymorphism in barn owls

Thomas Kvalnes, Bernt-Erik Sæther, Steinar Engen & Alexandre Roulin
The capacity of natural selection to generate adaptive changes is according to the Fundamental Theorem of Natural Selection proportional to the additive genetic variance in fitness. In spite of its importance for development of new adaptations to a changing environment, processes affecting the magnitude of the genetic variance in fitness-related traits are poorly understood. Here we show that the red-white colour polymorphism in female barn owls is subject to density-dependent selection at the phenotypic and...

Data on range-wide breeding habitat use of the critically endangered Yellow-breasted Bunting Emberiza aureola after population collapse

Wieland Heim, Ilka Beermann, Alexander Thomas, Marc Bastardot, Nyambayar Batbayar, Batmunkh Davaasuren, Yury Gerasimov, Makoto Hasebe, Gleb Nakul, Jugdernamjil Nergui, Pavel Ktitorov & Olga Kulikova
The population of the Yellow-breasted Bunting Emberiza aureola, a formerly widely distributed and abundant songbird of northern Eurasia, suffered a catastrophic decline and a strong range contraction between 1980 and 2013. There is evidence that the decline was driven by illegal trapping during migration, but potential contributions of other factors to the decline, such as land-use change, have not yet been evaluated. Before effects of land-use change can be evaluated, a basic understanding of the...

New opabiniid diversifies the weirdest wonders of the euarthropod stem group

Joanna Wolfe, Stephen Pates, Rudy Lerosey-Aubril, Allison C. Daley & Javier Ortega-Hernández
Once considered ‘weird wonders’ of the Cambrian, the emblematic Burgess Shale animals Anomalocaris and Opabinia are now recognized as lower stem group euarthropods and have provided crucial data for constraining the polarity of key morphological characters in the group. Anomalocaris and its relatives (radiodonts) had a worldwide distribution and survived until at least the Devonian. However, despite intense study, Opabinia remains the only formally described opabiniid to date. Here we reinterpret a fossil from the...

Environmental variation in sex ratios and sexual dimorphism in three wind-pollinated dioecious plant species

Sarah Bürli, John R. Pannell & Jeanne Tonnabel
Variation in plant sex ratios is often attributable to sex-specific mortality in heterogeneous environments that differentially limit male and female plant reproduction. Yet sexual dimorphism and plastic responses to environmental heterogeneity are common and may co-vary with variation in sex ratios. Here, we show that the sex ratio and the degree of sexual dimorphism for a number of plant traits varied along climatic and elevation gradients in three wind-pollinated dioecious species, Rumex lunaria, Urtica dioica...

Viral RefSeq databases for Centrifuge, Kraken2 and DIAMOND

Anna-Sapfo Malaspinas, Samuel Neuenschwander & Yami Arizmendi Cárdenas
Owing to technological advances in ancient DNA, it is now possible to sequence viruses from the past to track down their origin and evolution. However, ancient DNA data is considerably more degraded and contaminated than modern data making the identification of ancient viral genomes particularly challenging. Several methods to characterise the modern microbiome (and, within this, the virome) have been developed; in particular, tools that assign sequenced reads to specific taxa in order to characterise...

Mosquito saliva enhances virus infection through sialokinin-dependent vascular leakage

Daniella Lefteri, Steven Bryden, Marieke Pingen, Sandra Terry, Ailish McCafferty, Emily Beswick, Georgi Georgiev, Marleen Van der Laan, Valeria Mastrullo, Paola Campagnolo, Robert Waterhouse, Margus Varjak, Andres Merits, Rennos Fragkoudis, Stephen Griffin, Kave Shams, Emilie Pondeville & Clive McKimmie
Viruses transmitted by Aedes mosquitoes are an increasingly important global cause of disease. Defining common determinants of host susceptibility to this large group of het- erogenous pathogens is key for informing the rational design of panviral medicines. Infection of the vertebrate host with these viruses is enhanced by mosquito saliva, a complex mixture of salivary-gland-derived factors and microbiota. We show that the enhancement of infection by saliva was dependent on vascular function and was inde-...

Alien insect dispersal mediated by the global movement of commodities

Gyda Fenn-Moltu, Gyda Fenn-Moltu, Sébastien Ollier, Barney Caton, Andrew Liebhold, Helen Nahrung, Deepa Pureswaran, Rebecca Turner, Takehiko Yamanaka & Cleo Bertelsmeier
Globalization and economic growth are recognized as key drivers of biological invasions. Alien species have become a feature of almost every biological community worldwide, and rates of new introductions continue to rise as the movement of people and goods accelerates. Insects are among the most numerous and problematic alien organisms, and are mainly introduced unintentionally with imported cargo or arriving passengers. However, the processes occurring prior to insect introductions remain poorly understood. We used a...

Les sources du financement de la guerre en Savoie

Christian Guilleré, Roberto Biolzi & Sylvain Macherat

Replication material for: Marquis, Lionel; Tresch, Anke 2022. The Accessibility and Electoral Consequences of Issue Competence Perceptions: Evidence from the Swiss 2019 Election. Swiss Political Science Review 28(2).

Lionel Marquis & Anke Tresch

Data from: Species recognition limits mating between hybridizing ant species

Pierre Blacher, Sacha Zahnd, Jessica Purcell, Amaury Avril, Thalita Oliveira Honorato, Gaëlle Bailat-Rosset, Davide Staedler, Alan Brelsford & Michel Chapuisat
Identifying mechanisms limiting hybridization is a central goal of speciation research. Here, we studied pre-mating and post-mating barriers to hybridization between two ant species, Formica selysi and Formica cinerea. These species hybridize in the Rhône valley in Switzerland, where they form a mosaic hybrid zone, with limited introgression from F. selysi into F. cinerea. There was no sign of temporal isolation between the two species in the production of queens and males. With choice experiments,...

Data from: Worldwide impacts of landscape anthropization on mosquito abundance and diversity: a meta-analysis

Antoine Perrin, Olivier Glaizot & Philippe Christe
In recent decades, the emergence and resurgence of vector-borne diseases have been well documented worldwide, especially in tropical regions where protection and defence tools for human populations are still very limited. In this context, the dynamics of pathogens are influenced by landscape anthropization (i.e., urbanization, deforestation, and agricultural development), and one of the mechanisms through which this occurs is a change in the abundance and/or diversity of the vectors. An increasing number of empirical studies...

Investigative journalism and the watchdog role of news media: Between acute challenges and exceptional counterbalances

Achilleas Karadimitriou, Torbjörn von Krogh, Christian Ruggiero, Cecilia Biancalana, Mauro Bomba & Wai Han Lo

Whole-genome analysis of multiple wood ant population pairs supports similar speciation histories, but different degrees of gene flow, across their European ranges

Beatriz Portinha, Amaury Avril, Christian Bernasconi, Heikki Heläntera, Josie Monaghan, Bernhard Seifert, Vítor C. Sousa, Jonna Kulmuni & Pierre Nouhaud
The application of demographic history modelling and inference to the study of divergence between species has become a cornerstone of speciation genomics. Speciation histories are usually reconstructed by analysing single populations from each species, assuming that the inferred population history represents the actual speciation history. However, this assumption may not be met when species diverge with gene flow, e.g., when secondary contact may be confined to specific geographic regions. Here, we tested whether divergence histories...

Pivotal role of O-antigenic polysaccharide display in the sensitivity against phage tail-like particles in environmental Pseudomonas kin competition

Clara Heiman, Monika Maurhofer, Sandra Calderon, Mélanie Dupasquier, Julien Marquis, Christoph Keel & Jordan Vacheron
Environmental pseudomonads colonize various niches including insect and plant environments. When invading these environments, bacteria are confronted with the resident microbiota. To cope with closely related strains they deploy narrow-spectrum weaponry such as tailocins, i.e phage tail-like particles. Little is known about the receptors for these tailocins especially among phylogenetically closely related species. Here, we studied the interaction between an R-tailocin from Pseudomonas protegens CHA0 and a targeted kin, Pseudomonas protegens Pf-5. Using genome-wide transposon...

Rapid diversification of the Australian Amitermes group during late Cenozoic climate change

Bastian Heimburger, Leonie Schardt, Alexander Brandt, Stefan Scheu & Tamara Hartke
Late Cenozoic climate change led to the progressive aridification of Australia over the past 15 million years. This gradual biome turnover fundamentally changed Australia’s ecosystems, opening new niches and prompting diversification of plants and animals. One example are termites of the Australian Amitermes Group (AAG), consisting of the Australian Amitermes and affiliated genera. Although the most speciose and diverse higher termite group in Australia, little is known about its evolutionary history. We used ancestral range...

Teaching, sharing experience and innovation

Ottilie Tilston, Adrian Bangerter & Kristian Tylén
Teaching is widely understood to have an important role in cultural transmission. But cultural transmission experiments typically do not document or analyse what happens during teaching. Here, we examine the content of teaching during skill transmission under two conditions: in the presence of the artefact (no-displacement condition) and in the absence of the artefact (displacement condition). Participants built baskets from various materials to carry as much rice as possible before teaching the next participant in...

Niche overlap between two large herbivores across landscape variability using dietary eDNA metabarcoding: Raw sequences of European bison and red deer – Bialowieza

Eduard Mas-Carrió
Understanding the trophic ecology of herbivore species is key to assess their environmental requirements and to improve management policies, but measuring their trophic interactions remains challenging. Among the methods available, quantifying the plant composition of a species' diet provides a detailed picture of how species exploit the resources in their environment and their associated niche overlap. Yet, most studies focusing on herbivore trophic ecology ignore the influence that landscape variability may have. Here, we studied...

COVID-19 first lockdown as a window into language acquisition: associations between caregiver-child activities and vocabulary gains

Natalia Kartushina, Nivedita Mani, Aslı Aktan-Erciyes, Khadeejah Alaslani, Naomi Aldrich, Alaa Almohammadi, Haifa Alroqi, Lucy Anderson, Elena Andonova, Suzanne Aussems, Mireille Babineau, Mihaela Barokova, Christina Bergmann, Cara Cashon, Stephanie Custode, Alex de Carvalho, Nevena Dimitrova, Agnieszka Dynak, Rola Farah, Christopher Fennell, Anne-Caroline Fiévet, Michael Frank, Margarita Gavrilova, Hila Gendler-Shalev & Shannon Gibson
The COVID-19 pandemic, and the resulting closure of daycare centers worldwide, led to unprecedented changes in children’s learning environments. This period of increased time at home with caregivers, with limited access to external sources (e.g., daycares) provides a unique opportunity to examine the associations between the caregiver-child activities and children’s language development. The vocabularies of 1742 children aged 8-36 months across 13 countries and 12 languages were evaluated at the beginning and end of the...

New constraints on the Ivrea Geophysical Body at intra-crustal scales: a combination of gravimetry with passive seismology and rock’s physical properties

Matteo Scarponi , György Hetényi & IvreaArray Team
We present a high-resolution investigation of the Ivrea Geophysical Body (IGB) at intra-crustal scales in the Western Alps. The IGB is a sliver of Adriatic lower lithosphere, located at anomalously shallow depths, and presenting positive gravity and fast seismic anomalies. Despite comprehensive information from previous studies, structural questions persist on the IGB and on its structural relation with the Ivrea-Verbano zone (IVZ), which exposes lower-to-middle crustal composition outcrops at the surface. Therefore, we measured 207...

Effects of social organisation and elevation on spatial genetic structure in a montane ant

Amaranta Fontcuberta
Studying patterns of population structure across the landscape sheds light on dispersal and demographic processes, which helps to inform conservation decisions. Here, we study how social organisation and landscape factors affect spatial patterns of genetic differentiation in an ant species living in mountainous regions. Using genome-wide SNP markers, we assess population structure in the Alpine silver ant, Formica selysi. This species has two social forms controlled by a supergene. The monogyne form has one queen...

Data from: Sex-specific life history affected by stocking in juvenile brown trout

Hugo Palejowski, Jonas Bylemans, Victor Ammann, Lucas Marques Da Cunha, David Nusbaumer, Isabelle Castro, Anshu Uppal, Kenyon B. Mobley, Susanne Knörr & Claus Wedekind
Salmonids are a socioeconomically and ecologically important group of fish that are often managed by stocking. Little is known about potential sex-specific effects of stocking, but recent studies found that the sexes differ in their stress tolerances already at late embryonic stage, i.e., before hatchery-born larvae are released into the wild and long before morphological gonad formation. It has also been speculated that sex-specific life histories can affect juvenile growth and mortality, and that a...

Adaptation to a bacterial pathogen in Drosophila melanogaster is not aided by sexual selection

Sakshi Sharda, Tadeusz Kawecki & Brian Hollis
Theory predicts that sexual selection should aid adaptation to novel environments, but empirical support for this idea is limited. Pathogens are a major driver of host evolution and, unlike abiotic selection pressures, undergo epidemiological and co-evolutionary cycles with the host involving adaptation and counteradaptation. Because of this, populations harbor ample genetic variation underlying immunity and the opportunity for sexual selection based on condition-dependent “good genes” is expected to be large. In this study, we evolved...

Measurement of male and female morphologies in Mercurialis annua

Jeanne Tonnabel, Patrice David & John Pannell
We provide a dataset documenting the changes in male and female morphological traits after evolution at low- and high-density during three generations in the dioecious plant species Mercurialis annua. Our dataset corresponds to results from an experimental evolution protocol in which we have measured male and female traits after the evolution of ten experimental independent populations at the two contrasting densities. Seeds were initially collected in various populations of the species range and grown for...

Inbreeding and kinship coefficients of parents of sperm competition experiment with lake char (Lake Geneva 2017/18)

Christian De Guttry, David Nusbaumer, Laura Garaud, Laurie Ançay & Claus Wedekind
A total of 14 lake char (Salvelinus umbla) were genotyped in the same library using ddRADsequencing. The data includes 14 gzipped .fastq files generated using 2 lanes of sequencing on an Illumina HIseq 2500 and the final dataset with the final estimates of kinship and inbreeding. For each individual, the fastq files of the 2 sequencings lanes were merged after demultiplexing using process_radtags (Stacks 1.48). We provide the bash and R scripts that we used....

Registration Year

  • 2022

Resource Types

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  • University of Lausanne
  • Université Savoie Mont Blanc
  • National Research Institute for Agriculture, Food and Environment
  • University of Neuchâtel
  • University of the Sunshine Coast
  • University of Edinburgh
  • University of Göttingen
  • University of Zurich
  • University of Helsinki
  • Grand Valley State University