37 Works

Deer density drives habitat use of establishing wolves in the Western European Alps

Stefanie Roder, François Biollaz, Stéphane Mettaz, Fridolin Zimmermann, Ralph Manz, Marc Kery, Sergio Vignali, Luca Fumagalli, Raphaël Arlettaz & Veronika Braunisch
1. The return of top carnivores to their historical range triggers conflicts with the interests of different stakeholder groups. Anticipating such conflicts is key to appropriate conservation management, which calls for reliable spatial predictions of future carnivore occurrence. Previous models have assessed general habitat suitability for wolves, but the factors driving the settlement of dispersing individuals remain ill-understood. In particular, little attention has been paid to the role of prey availability in the recolonization process....

Rapid climate change results in long-lasting spatial homogenization of phylogenetic diversity

Bianca Saladin, Loïc Pellissier, Catherine H. Graham, Michael P. Nobis, Nicolas Salamin & Niklaus E. Zimmermann
Scientific understanding of biodiversity dynamics, resulting from past climate oscillations and projections of future changes in biodiversity, has advanced over the past decade. Little is known about how these responses, past or future, are spatially connected. Analyzing the spatial variability in biodiversity provides insight into how climate change affects the accumulation of diversity across space. Here, we evaluate the spatial variation of phylogenetic diversity of European seed plants among neighboring sites and assess the effects...

SNP datasets obtained with ddRADseq from four contact zones between Podarcis carbonelli and four other Podarcis species

Guilherme Caeiro-Dias, Alan Brelsford, Antigoni Kaliontzopoulou, Mariana Meneses-Ribeiro, Pierre-André Chrochet & Catarina Pinho
We used double digestion restriction site associated DNA (ddRAD) sequencing to discover SNPs in samples from four contact zones between Podarcis carbonelli and four other Podarcis species. We obtained a panel of SNPs for each for each contact zone and reference populations and a dataset of diagnostic SNPs between reference populations for each contact zone but excluding private alleles from references, i.e. excluding alleles that are not present in the populations of contact. The final...

Plasticity in leakiness

John Pannell
In dioecious plants, males and females frequently show ‘leaky’ sex expression, with individuals occasionally producing flowers of the opposite sex. This leaky sex expression may have enabled the colonization of oceanic islands by dioecious plant species, and it is likely to represent the sort of variation upon which selection acts to bring about evolutionary transitions from dioecy to hermaphroditism. Although leakiness is commonly reported for dioecious species, it is not known whether it has plastic...

Data from: Four myriapod relatives – but who are sisters? No end to debates on relationships among the four major myriapod subgroups

Nikolaus U. Szucsich, Daniela Bartel, Alexander Blanke, Alexander Böhm, Alexander Donath, Makiko Fukui, Simon Grove, Shanlin Liu, Oliver Macek, Ryuichiro Machida, Bernhard Misof, Yasutaka Nakagaki, Lars Podsiadlowski, Kaoru Sekiya, Shigekazu Tomizuka, Björn M. Von Reumont, Robert M. Waterhouse, Manfred Walzl, Guanliang Meng, Xin Zhou, Günther Pass & Karen Meusemann
Background: Phylogenetic relationships among the myriapod subgroups Chilopoda, Diplopoda, Symphyla and Pauropoda are still not robustly resolved. The first phylogenomic study covering all subgroups resolved phylogenetic relationships congruently to morphological evidence but is in conflict with most previously published phylogenetic trees based on diverse molecular data. Outgroup choice and long-branch attraction effects were stated as possible explanations for these incongruencies. In this study, we addressed these issues by extending the myriapod and outgroup taxon sampling...

Scale-dependence of ecological assembly rules: insights from empirical datasets and joint species distribution modelling

Heidi Mod, Mathieu Chevalier, Miska Luoto & Antoine Guisan
1. A comprehensive understanding of the scale-dependency of environmental filtering and biotic interactions influencing the local assembly of species is paramount to derive realistic forecasts of the future of biodiversity and efficiently manage ecological communities. A classical assumption is that environmental filters are more prevalent at larger scales with diminishing effects towards the finest scales where biotic interactions become more decisive. Recently, a refinement was proposed stipulating that the scale-dependency of biotic interactions should relate...

Constraint summation in phonological theory

Benjamin Storme & Giorgio Magri

Au fil du temps et des rencontres : une cartographie des réseaux personnels en Suisse

Gaëlle Aeby, Jacques-Antoine Gauthier & Eric D. Widmer

Élections fédérales 2019. Participation et choix électoral

Anke Tresch, Lukas Lauener, Laurent Bernhard, Georg Lutz & Laura Scaperrotta

Testing for population differences in evolutionary responses to pesticide pollution in brown trout (Salmo trutta)

David Nusbaumer, Lucas Marques Da Cunha & Claus Wedekind
Pesticides are often toxic to non-target organisms, especially to those living in rivers that drain agricultural land. The brown trout (Salmo trutta) is a keystone species in many such rivers, and natural populations have hence been chronically exposed to pesticides over multiple generations. The introduction of pesticides decades ago could have induced evolutionary responses within these populations. Such a response would be predicted to reduce the toxicity over time but also deplete any additive genetic...

Data from: Pushing Raman spectroscopy over the edge: purported signatures of organic molecules in fossil animals are instrumental artefacts

Julien Alleon, Gilles Montagnac, Bruno Reynard, Thibault Brulé, Mathieu Thoury & Pierre Gueriau
Widespread preservation of fossilized biomolecules in many fossil animals has recently been reported in six studies, based on Raman microspectroscopy. Here, we show that the putative Raman signatures of organic compounds in these fossils are actually instrumental artefacts resulting from intense background luminescence. Raman spectroscopy is based on the detection of photons scattered inelastically by matter upon its interaction with a laser beam. For many natural materials, this interaction also generates a luminescence signal that...

Post-embryonic development of Fritzolenellus suggests the ancestral morphology of the early developmental stages in Trilobita

Lukáš Laibl, Jörg Maletz & Pascal Olschewski
Trilobite development has been intensively explored during past decades, but information about ancestral character combinations in the early developmental stages of trilobites remains virtually unknown. Trilobites of the superfamily Olenelloidea are one of the earliest diverging groups. Study of their development coupled with the development of other early diverging trilobite groups can provide crucial information about the ancestral morphology of trilobite early stages. Herein we describe numerous well-preserved specimens of the olenelloid trilobite Fritzolenellus lapworthi....

Data from: Different distribution of malaria parasite in left and right extremities of vertebrate hosts translates into differences in parasite transmission

Romain Pigeault, Julie Isaïa, Rakiswendé S. Yerbanga, Jean-Bosco Ouédraogo, Anna Cohuet, Thierry Lefèvre & Philippe Christe
Malaria, a vector-borne disease caused by Plasmodium spp., remains a major global cause of mortality. Optimization of disease control strategies requires a thorough understanding of the processes underlying parasite transmission. While the number of transmissible stages (gametocytes) of Plasmodium in blood is frequently used as an indicator of host-to-mosquito transmission potential, this relationship is not always clear. Significant effort has been made in developing molecular tools that improve gametocyte density estimation and therefore prediction of...

Les héritages en Suisse : évolution depuis 1911 et importance pour les impôts

Marius Bruelhart

Eidgenössische Wahlen 2019. Wahlteilnahme und Wahlentscheid

Anke Tresch, Lukas Lauener, Laurent Bernhard, Georg Lutz & Laura Scaperrotta

A Contractual Justification for Strong Measures against COVID-19

Laetitia Ramelet
Many countries have taken extensive measures to slow COVID-19’s progress and attempt to avert a sanitary collapse. Although the necessity of saving lives seems evident to many of us, these measures will nevertheless have dire economic effects and impose major costs on much of the population. A solid public justification is essential, for which a social contract perspective is useful. I argue that it helps us understand why such measures not only do justice to...

Taxinomie des constructions en si dans un corpus de français oral L'exemple d'OFROM

Gilles Corminboeuf & Timon Jahn

On the effect of asymmetrical trait inheritance on models of trait evolution

Pablo Duchen, Michael Alfaro, Jonathan Rolland, Nicolas Salamin & Daniele Silvestro
Current phylogenetic comparative methods modelling quantitative trait evolution generally assume that, during speciation, phenotypes are inherited identically between the two daughter species. This, however, neglects the fact that species consist of a set of individuals, each bearing its own trait value. Indeed, because descendent populations after speciation are samples of a parent population, we can expect their mean phenotypes to randomly differ from one another potentially generating a ``jump'' of mean phenotypes due to asymmetrical...

Multiple cleaner species provide simultaneous services to coral reef fish clients

Dan Exton & Benjamin Titus
Cleaning symbioses on tropical coral reefs are typically documented between two species: a single client fish and one or more conspecific cleaners. However, multiple Caribbean cleaner species often live sympatrically and have been anecdotally reported to simultaneously clean the same client. The patterns and processes driving these interactions are poorly understood and cleaning interactions involving multiple cleaner species may be subject to different driving forces than those involving a single cleaner species. Here we used...

Erbschaften in der Schweiz: Entwicklung seit 1911 und Bedeutung für die Steuern

Marius Bruelhart

Elezioni federali 2019. Partecipazione e decisione di voto

Anke Tresch, Lukas Lauener, Laurent Bernhard, Georg Lutz & Laura Scaperrotta

An ancient and eroded social supergene is widespread across Formica ants

Alan Brelsford, Jessica Purcell, Amaury Avril, Patrick Tran Van, Junxia Zhang, Timothée Brütsch, Liselotte Sundström, Heikki Helanterä & Michel Chapuisat
Supergenes, clusters of tightly linked genes, play a key role in the evolution of complex adaptive variation. While supergenes have been identified in many species, we lack an understanding of their origin, evolution and persistence. Here, we uncover 20-40 MY of evolutionary history of a supergene associated with polymorphic social organization in Formica ants. We show that five Formica species exhibit homologous divergent haplotypes spanning 11 Mbp on chromosome 3. Despite the size of the...

Scripts and files for \"Small-scale population divergence is driven by local larval environment in a temperate amphibian\"

Patrik Rödin Mörch, Hugo Palejowski, Maria Cortazar-Chinarro, Simon Kärvemo, Alex Richter-Boix, Jacob Höglund & Anssi Laurila
Genomic variation within and among populations is shaped by the interplay between natural selection and the effects of genetic drift and gene flow. Adaptive divergence can be found in small scale natural systems even when population sizes are small and the potential for gene flow is high, suggesting that local environments exert selection pressures strong enough to counteract the opposing effects of drift and gene flow. Here, we investigated genomic differentiation in nine moor frog...

Data from: Visualizing mineralization processes and fossil anatomy using synchronous synchrotron X-ray fluorescence and X-ray diffraction mapping

Pierre Gueriau, Solenn Réguer, Nicolas Leclercq, Camila Cupello, Paulo M. Brito, Clément Jauvion, Séverin Morel, Sylvain Charbonnier, Dominique Thiaudière & Cristian Mocuta
Fossils, including those that occasionally preserve decay-prone soft-tissues, are mostly made of minerals. Accessing their chemical composition provides unique insight into their past biology and/or the mechanisms by which they preserve, leading to a series of developments in chemical and elemental imaging. However, the mineral composition of fossils, particularly where soft-tissues are preserved, is often only inferred indirectly from elemental data, while X-ray diffraction that specifically provides phase identification received little attention. Here, we show...

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Affiliations

  • University of Lausanne
    37
  • Swiss Centre of Expertise in the Social Sciences
    3
  • University of Geneva
    2
  • University of Fribourg
    2
  • Grenoble Alpes University
    2
  • University of Paris-Saclay
    2
  • University of Helsinki
    2
  • Uppsala University
    2
  • Maladies Infectieuses et Vecteurs : Ecologie, Génétique, Evolution et Contrôle
    1
  • University of Liège
    1