39 Works

Data from: Small-scale and regional spatial dynamics of an annual plant with contrasting sexual systems

Marcel E. Dorken, Robert P. Freckleton & John R. Pannell
1.Plant demography is known to depend on both spatial dynamics and life history, but how these two factors interact is poorly understood. We conducted a longitudinal study of the wind-pollinated annual plant Mercurialis annua that varies geographically in its sexual system to investigate this interaction. 2.Metapopulation demographic models predict that regular population turnover should be a more common feature of monomorphic than dimorphic populations because males and females cannot found new populations by selfing but...

Data from: Identifying homomorphic sex chromosomes from wild-caught adults with limited genomic resources

Alan Brelsford, Guillaume Lavanchy, Roberto Sermier, Anna Rausch & Nicolas Perrin
We demonstrate a genotyping-by-sequencing approach to identify homomorphic sex chromosomes and their homolog in a distantly related reference genome, based on noninvasive sampling of wild-caught individuals, in the moor frog Rana arvalis. Double-digest RADseq libraries were generated using buccal swabs from 30 males and 21 females from the same population. Search for sex-limited markers from the unfiltered data set (411 446 RAD tags) was more successful than searches from a filtered data set (33 073...

Data from: Bioinformatic processing of RAD-seq data dramatically impacts downstream population genetic inference

Aaron B. A. Shafer, Claire R. Peart, Sergio Tusso, Inbar Maayan, Alan Brelsford, Christopher W. Wheat & Jochen B. W. Wolf
Restriction site-associated DNA sequencing (RAD-seq) provides high-resolution population genomic data at low cost, and has become an important component in ecological and evolutionary studies. As with all high-throughput technologies, analytic strategies require critical validation to ensure accurate and unbiased interpretation. To test for the impact of bioinformatic data processing on downstream population genetic inferences, we analysed mammalian RAD-seq data (>100 individuals) with 312 combinations of methodology (de novo vs. mapping to references of increasing divergence)...

Data from: Reflections of the social environment in chimpanzee memory: applying rational analysis beyond humans

Jeffrey R. Stevens, Julian N. Marewski, Lael J. Schooler & Ian C. Gilby
In cognitive science, the rational analysis framework allows modelling of how physical and social environments impose information-processing demands onto cognitive systems. In humans, for example, past social contact among individuals predicts their future contact with linear and power functions. These features of the human environment constrain the optimal way to remember information and probably shape how memory records are retained and retrieved. We offer a primer on how biologists can apply rational analysis to study...

Data from: Snowbeds are more affected than other subalpine-alpine plant communities by climate change in the Swiss Alps

Magali Matteodo, Klaus Ammann, Eric Pascal Verrecchia & Pascal Vittoz
While the upward shift of plant species has been observed on many alpine and nival summits, the reaction of the subalpine and lower alpine plant communities to the current warming and lower snow precipitation has been little investigated so far. To this aim, 63 old, exhaustive plant inventories, distributed along a subalpine–alpine elevation gradient of the Swiss Alps and covering different plant community types (acidic and calcareous grasslands; windy ridges; snowbeds), were revisited after 25–50...

Data from: Individual learning performance and exploratory activity are linked to colony foraging success in a mass-recruiting ant

Grégoire Pasquier & Christoph Grüter
Learning plays an important role in the life of many animals. In social insects, colony foraging success depends on the combined actions of many individuals and learning contributes to individual foraging success. In many ants, for example, route learning helps foragers to navigate between the nest and a food source. Here, we studied if the foraging success of a colony depends on the route-learning performance of its individuals. We used a doubly bifurcating T-maze to...

Data from: Extreme genetic diversity in asexual grass thrips populations

Amaranta Fontcuberta García-Cuenca, Zoé Dumas & Tanja Schwander
The continuous generation of genetic variation has been proposed as one of the main factors explaining the maintenance of sexual reproduction in nature. However, populations of asexual individuals may attain high levels of genetic diversity through within-lineage diversification, replicate transitions to asexuality from sexual ancestors and migration. How these mechanisms affect genetic variation in populations of closely related sexual and asexual taxa can therefore provide insights into the role of genetic diversity for the maintenance...

Data from: Tipping the scales: evolution of the allometric slope independent of average trait size

R. Craig Stillwell, Alexander W. Shingleton, Ian Dworkin & W. Anthony Frankino
The scaling of body parts is central to the expression of morphology across body sizes and to the generation of morphological diversity within and among species. Although patterns of scaling-relationship evolution have been well documented for over one hundred years, little is known regarding how selection acts to generate these patterns. In part, this is because it is unclear the extent to which the elements of log-linear scaling relationships – the intercept or mean trait...

Data from: Just Google it: assessing the use of Google Images to describe geographical variation in visible traits of organisms

Gabriella R. M. Leighton, Pierre S. Hugo, Alexandre Roulin & Arjun Amar
Describing spatial patterns of phenotypic traits can be important for evolutionary and ecological studies. However, traditional approaches, such as fieldwork, can be time-consuming and expensive. Information technologies, such as Internet search engines, could facilitate the collection of these data. Google Images is one such technology that might offer an opportunity to rapidly collect information on spatial patterns of phenotypic traits. We investigated the use of Google Images in extracting data on geographical variation in phenotypic...

Data from: Imprints of multiple glacial refugia in the Pyrenees revealed by phylogeography and palaeodistribution modelling of an endemic spider

Leticia Bidegaray-Batista, Alejandro Sánchez-Garcia, Giulia Santulli, Luigi Maiorano, Antoine Guisan, Alfried Vogler & Miquel Arnedo
Mediterranean mountain ranges harbour highly endemic biota in islandlike habitats. Their topographic diversity offered the opportunity for mountain species to persist in refugial areas during episodes of major climatic change. We investigate the role of Quaternary climatic oscillations in shaping the demographic history and distribution ranges in the spider Harpactocrates ravastellus, endemic to the Pyrenees. Gene trees and multispecies coalescent analyses on mitochondrial and nuclear DNA sequences unveiled two distinct lineages with a hybrid zone...

Data from: Parallel effects of the inversion In(3R)Payne on body size across the North American and Australian clines in Drosophila melanogaster

Martin Kapun, Chloe Schmidt, Esra Durmaz, Paul S. Schmidt & Thomas Flatt
Chromosomal inversions are thought to play a major role in climatic adaptation. In D. melanogaster, the cosmopolitan inversion In(3R)Payne exhibits latitudinal clines on multiple continents. Since many fitness traits show similar clines, it is tempting to hypothesize that In(3R)P underlies observed clinal patterns for some of these traits. In support of this idea, previous work in Australian populations has demonstrated that In(3R)P affects body size but not development time or cold resistance. However, similar data...

Data from: Dmrt1 polymorphism covaries with sex-determination patterns in Rana temporaria

Wen-Juan Ma, Nicolas Rodrigues, Roberto Sermier, Alan Brelsford & Nicolas Perrin
Patterns of sex-chromosome differentiation and gonadal development have been shown to vary among populations of Rana temporaria along a latitudinal transect in Sweden. Frogs from the northern-boreal population of Ammarnäs displayed well-differentiated X and Y haplotypes, early gonadal differentiation, and a perfect match between phenotypic and genotypic sex. In contrast, no differentiated Y haplotypes could be detected in the southern population of Tvedöra, where juveniles furthermore showed delayed gonadal differentiation. Here, we show that Dmrt1,...

Data from: Family-assisted inference of the genetic architecture of MHC variation

Arnaud Gaigher, Reto Burri, Walid H. Gharib, Pierre Taberlet, Alexandre Roulin & Luca Fumagalli
With their direct link to individual fitness, genes of the major histocompatibility complex (MHC) are a popular system to study the evolution of adaptive genetic diversity. However, owing to the highly dynamic evolution of the MHC region, the isolation, characterization and genotyping of MHC genes remain a major challenge. While high-throughput sequencing technologies now provide unprecedented resolution of the high allelic diversity observed at the MHC, in many species, it remains unclear (i) how alleles...

Data from: Coevolution between positive reciprocity, punishment, and partner switching in repeated interactions

Matthias Wubs, Redouan Bshary & Laurent Lehmann
Cooperation based on mutual investments can occur between unrelated individuals when they are engaged in repeated interactions. Individuals then need to use a conditional strategy to deter their interaction partners from defecting. Responding to defection such that the future payoff of a defector is reduced relative to cooperating with it is called a partner control mechanism. Three main partner control mechanisms are (i) to switch from cooperation to defection when being defected (‘positive reciprocity’), (ii)...

Data from: Capturing neutral and adaptive genetic diversity for conservation in a highly structured tree species

Isabel Rodríguez-Quilón, Luis Santos-Del-Blanco, María Jesús Serra-Varela, Jarkko Koskela, Santiago César González-Martínez & Ricardo Alía
Preserving intraspecific genetic diversity is essential for long-term forest sustainability in a climate change scenario. Despite that, genetic information is largely neglected in conservation planning, and how conservation units should be defined is still heatedly debated. Here, we use maritime pine (Pinus pinaster Ait.), an outcrossing long lived tree with a highly fragmented distribution in the Mediterranean biodiversity hotspot, to prove the importance of accounting for genetic variation - at both neutral molecular markers and...

Data from: Selective disappearance of individuals with high levels of glycated haemoglobin in a free-living bird

Charlotte Récapet, Adélaïde Sibeaux, Laure Cauchard, Blandine Doligez & Pierre Bize
Although disruption of glucose homeostasis is a hallmark of ageing in humans and laboratory model organisms, we have little information on the importance of this process in free-living animals. Poor control of blood glucose levels leads to irreversible protein glycation. Hence, levels of protein glycation are hypothesized to increase with age and to be associated with a decline in survival. We tested these predictions by measuring blood glycated haemoglobin in 274 adult collared flycatchers of...

Data from: Comparison of self-perceived cardiovascular disease risk among smokers with Framingham and PROCAM scores: a cross-sectional analysis of baseline data from a randomised controlled trial

Benoit Desgraz, Tinh-Hai Collet, Nicolas Rodondi, Jacques Cornuz & Carole Clair
Objectives: Previous studies suggest that smokers have a misperception of their 10-year cardiovascular risk. We aimed to compare 10-year cardiovascular risk self-perception and calculated risk among smokers willing to quit and assess the determinants of a possible misperception. Design: Cross-sectional secondary analysis of baseline data from a randomized controlled trial of smoking cessation. Participants: 514 participants, mean age 51.1 years, 46% women, 98% Caucasian. Eligible participants were regular smokers, aged between 40 and 70 years,...

Data from: Trans-species variation in Dmrt1 is associated with sex determination in four European tree-frog species

Alan Brelsford, Christophe Dufresnes & Nicolas Perrin
Empirical studies on the relative roles of occasional XY recombination versus sex-chromosome turnover in preventing sex-chromosome differentiation may shed light on the evolutionary forces acting on sex-determination systems. Signatures of XY recombination are difficult to distinguish from those of homologous transitions (i.e., transitions in sex-determination systems that keep sex-chromosome identity): both models predict X and Y alleles at sex-linked genes to cluster by species. However, the XY-recombination model specifically predicts the reverse pattern (clustering by...

Data from: Evolutionary melting pots: a biodiversity hotspot shaped by ring diversifications around the Black Sea in the Eastern tree frog (Hyla orientalis)

Christophe Dufresnes, Spartak N. Litvinchuk, Julien Leuenberger, Karim Ghali, Oleksandr Zinenko, Matthias Stöck & Nicolas Perrin
Hotspots of intraspecific genetic diversity, which are of primary importance for the conservation of species, have been associated with glacial refugia, that is areas where species survived the Quaternary climatic oscillations. However, the proximate mechanisms generating these hotspots remain an open issue. Hotspots may reflect the long-term persistence of large refugial populations; alternatively, they may result from allopatric differentiation between small and isolated populations, that later admixed. Here, we test these two scenarios in a...

Data from: Hybridization as a threat in climate relict Nuphar pumila (Nymphaeaceae)

Nils Arrigo, Sébastien Bétrisey, Larissa Graff, Julia Bilat, Emmanuel Gerber & Gregor Kozlowski
Field studies and conceptual work on hybridization-mediated extinction risk in climate relicts are extremely rare. Nuphar pumila (Nymphaeaceae) is one of the most emblematic climate relicts in Europe with few isolated populations in the Alpine arc. The extent of introgression with related lowland and generalist species Nuphar lutea has never been studied using molecular methods. All biogeographical regions where N. pumila naturally occurs in the neighbourhood of the Alpine arc were sampled and studied using...

Data from: Postmating-prezygotic isolation between two allopatric populations of Drosophila montana: fertilisation success differs under sperm competition

Outi Ala-Honkola, Michael G. Ritchie & Paris Veltsos
Postmating but prezygotic (PMPZ) interactions are increasingly recognized as a potentially important early-stage barrier in the evolution of reproductive isolation. A recent study described a potential example between populations of the same species: single matings between Drosophila montana populations resulted in differential fertilisation success because of the inability of sperm from one population (Vancouver) to penetrate the eggs of the other population (Colorado). As the natural mating system of D. montana is polyandrous (females remate...

Data from: Genetic correlations and little genetic variance for reaction norms may limit potential for adaptation to pollution by ionic and nanoparticulate silver in a whitefish (Salmonidae)

Emily S. Clark, Manuel Pompini, Anshu Uppal & Claus Wedekind
For natural populations to adapt to anthropogenic threats, heritable variation must persist in tolerance traits. Silver nanoparticles, the most widely used engineered nanoparticles, are expected to increase in concentrations in freshwaters. Little is known about how these particles affect wild populations, and whether genetic variation persists in tolerance to permit rapid evolutionary responses. We sampled wild adult whitefish and crossed them in vitro full factorially. In total, 2896 singly raised embryos of 48 families were...

Data from: The simultaneous inducibility of phytochemicals related to plant direct and indirect defences against herbivores is stronger at low elevation

Loïc Pellissier, Xoaquín Moreira, Holger Danner, Martha Serrano, Nicolas Salamin, Nicole M. Van Dam & Sergio Rasmann
Ecological theory indicates that warmer and more stable climates should result in stronger biotic interactions. Therefore, plant species growing at lower elevations and experiencing greater herbivore pressure, should invest in higher levels of defences than those at higher elevations. Nonetheless, there are a number of studies that have found no effect of elevational gradients on plant defensive traits. Several factors might explain the lack of consistency for the altitude-defence relationships; including 1) the reduction of...

Data from: Microhabitat selection in the common lizard: implications of biotic interactions, age, sex, local processes, and model transferability among populations

Miguel Peñalver-Alcázar, Pedro Aragón, Merel C. Breedveld & Patrick S. Fitze
Modeling species' habitat requirements are crucial to assess impacts of global change, for conservation efforts and to test mechanisms driving species presence. While the influence of abiotic factors has been widely examined, the importance of biotic factors and biotic interactions, and the potential implications of local processes are not well understood. Testing their importance requires additional knowledge and analyses at local habitat scale. Here, we recorded the locations of species presence at the microhabitat scale...

Data from: Sex-specific allelic transmission bias suggests sexual conflict at MC1R

Valérie Ducret, Arnaud Gaigher, Céline Simon, Jérôme Goudet & Alexandre Roulin
Sexual conflict arises when selection in one sex causes the displacement of the other sex from its phenotypic optimum, leading to an inevitable tension within the genome – called intralocus sexual conflict. Although the autosomal melanocortin-1-receptor gene (MC1R) can generate colour variation in sexually dichromatic species, most previous studies have not considered the possibility that MC1R may be subject to sexual conflict. In the barn owl (Tyto alba), the allele MC1RWHITE is associated with whitish...

Registration Year

  • 2016
    39

Resource Types

  • Dataset
    39

Affiliations

  • University of Lausanne
    39
  • University of Bern
    3
  • University of California System
    2
  • University of Neuchâtel
    2
  • University of Aberdeen
    2
  • French National Centre for Scientific Research
    2
  • Trent University
    2
  • University of Helsinki
    2
  • Uppsala University
    2
  • University of Oxford
    2