41 Works

Data from: A palaeoequatorial Ornithischian and new constraints on early dinosaur diversification

Paul M. Barrett, Richard J. Butler, Roland Mundil, Torsten M. Scheyer, Randall B. Irmis, Marcelo R. Sánchez-Villagra, R. B. Irmis, P. M. Barrett, R. J. Butler, M. R. Sanchez-Villagra, T. M. Scheyer & R. Mundil
Current characterizations of early dinosaur evolution are incomplete: existing palaeobiological and phylogenetic scenarios are based on a fossil record dominated by saurischians and the implications of the early ornithischian record are often overlooked. Moreover, the timings of deep phylogenetic divergences within Dinosauria are poorly constrained owing to the absence of a rigorous chronostratigraphical framework for key Late Triassic–Early Jurassic localities. A new dinosaur from the earliest Jurassic of the Venezuelan Andes is the first basal...

Data from: Modelling plant species distribution in alpine grasslands using airborne imaging spectroscopy

Julien Pottier, Zbyněk Malenovský, Achilleas Psomas, Lucie Homolová, Michael E. Schaepman, Philippe Choler, Wilfried Thuiller, Antoine Guisan, Niklaus E. Zimmermann, A. Psomas, N. E. Zimmermann, A. Guisan & J. Pottier
Remote sensing using airborne imaging spectroscopy (AIS) is known to retrieve fundamental optical properties of ecosystems. However, the value of these properties for predicting plant species distribution remains unclear. Here, we assess whether such data can add value to topographic variables for predicting plant distributions in French and Swiss alpine grasslands. We fitted statistical models with high spectral and spatial resolution reflectance data and tested four optical indices sensitive to leaf chlorophyll content, leaf water...

Data from: Female house mice avoid fertilization by t haplotype incompatible males in a mate choice experiment

Andri Manser, Barbara König & Anna K. Lindholm
The t haplotype in house mice is a well-known selfish genetic element with detrimental, nonadditive fitness consequences to its carriers: recessive lethal mutations cause t/t homozygotes to perish in utero. Given the severe genetic incompatibility imposed by the t haplotype, we predict females to avoid fertilization by t haplotype incompatible males. Indeed, some of the strongest evidence for compatibility mate choice is related to the t haplotype in house mice. However, all previous evidence for...

Data from: Condition dependence and the maintenance of genetic variance in a sexually dimorphic black scavenger fly

Cait Dmitriew, Wolf U. Blanckenhorn, C. Dmitriew & W. U. Blanckenhorn
The maintenance of genetic variation in traits under strong sexual selection is a longstanding problem in evolutionary biology. The genic capture model proposes that this problem can be explained by the evolution of condition dependence in exaggerated male traits. We tested the predictions that condition dependence should be more pronounced in male sexual traits and that genetic variance in expression of these traits should increase under stress as among-genotype variation in overall condition is exposed....

Data from: Genic rather than genome-wide differences between sexually deceptive Ophrys orchids with different pollinators

Khalid E. M. Sedeek, Giovanni Scopece, Yannick M. Staedler, Jürg Schönenberger, Salvatore Cozzolino, Florian P. Schiestl & Philipp M. Schlüter
High pollinator specificity and the potential for simple genetic changes to affect pollinator attraction make sexually deceptive orchids an ideal system for the study of ecological speciation, in which change of flower odour is likely important. This study surveys reproductive barriers and differences in floral phenotypes in a group of four closely related, co-flowering sympatric Ophrys species, and uses a genotyping by sequencing (GBS) approach to obtain information on the proportion of the genome that...

Data from: Reconstructing the demographic history of orang-utans using approximate Bayesian computation

Alexander Nater, Maja P. Greminger, Natasha Arora, Carel P. Van Schaik, Benoit Goossens, Ian Singleton, Ernst J. Verschoor, Kristen S. Warren, Michael Krützen & Kristin S. Warren
Investigating how different evolutionary forces have shaped patterns of DNA variation within and among species requires detailed knowledge of their demographic history. Orang-utans, whose distribution is currently restricted to the Southeast Asian islands of Borneo (Pongo pygmaeus) and Sumatra (Pongo abelii), have likely experienced a complex demographic history, influenced by recurrent changes in climate and sea levels, volcanic activities and anthropogenic pressures. Using the most extensive sample set of wild orang-utans to date, we employed...

Data from: Heterostyly promotes disassortative pollination and reduces sexual interference in Darwin’s primroses: evidence from experimental studies

Barbara Keller, James D. Thomson & Elena Conti
Different strategies to reduce selfing and promote outcrossing have evolved in hermaphroditic flowers. Heterostyly, a complex floral polymorphism that occurs in at least 27 families of angiosperms, is hypothesized to achieve both goals by optimizing cross-pollination (via disassortative pollen transfer) and restricting gamete wastage to autogamy (via the reduction of sexual interference between male and female organs). In heterostylous flowers, the reciprocal positioning of sexual organs in different morphs and the pollen incompatibility-system within flower...

Data from: Density- and trait-mediated effects of a parasite and a predator in a tri-trophic food web

Aabir Banerji, Alison B. Duncan, Joanne S. Griffin, Stuart Humphries, Owen L. Petchey & Oliver Kaltz
1. Despite growing interest in ecological consequences of parasitism in food webs, relatively little is known about effects of parasites on long-term population dynamics of non-host species or about whether such effects are density- or trait- mediated. 2. We studied a tri-trophic food chain comprised of: (i) a bacterial basal resource (Serratia fonticola), (ii) an intermediate consumer (Paramecium caudatum), (iii) a top predator (Didinium nasutum), and (iv) a parasite of the intermediate consumer (Holospora undulata)....

Data from: Quantifying inbreeding avoidance through extra-pair reproduction

Jane M. Reid, Peter Arcese, Lukas F. Keller, Ryan R. Germain, Alexander Bradley Duthie, Sylvain Losdat, Matthew Ernest Wolak, Pirmin Nietlisbach, A. Bradley Duthie & Matthew E. Wolak
Extra-pair reproduction is widely hypothesised to allow females to avoid inbreeding with related socially-paired males. Consequently, numerous field studies have tested the key predictions that extra-pair offspring are less inbred than females’ alternative within-pair offspring, and that the probability of extra-pair reproduction increases with a female's relatedness to her socially-paired male. However such studies rarely measure inbreeding or relatedness sufficiently precisely to detect subtle effects, or consider biases stemming from failure to observe inbred offspring...

Data from: 'Prudent habitat choice': a novel mechanism of size-assortative mating

Barbara Taborsky, Luzia Guyer, Patrick Demus, L. Guyer, B. Taborsky & P. Demus
Assortative mating, an ubiquitous form of nonrandom mating, strongly impacts Darwinian fitness and can drive biological diversification. Despite its ecological and evolutionary importance, the behavioural processes underlying assortative mating are often unknown, and in particular, mechanisms not involving mate choice have been largely ignored so far. Here, we propose that assortative mating can arise from ‘prudent habitat choice’, a general mechanism that acts under natural selection, and that it can occur despite a complete mixing...

Data from: The draft genome of Primula veris yields insights into the molecular basis of heterostyly

Michael D. Nowak, Giancarlo Russo, Ralph Schlapbach, Cuong Nguyen Huu, Michael Lenhard & Elena Conti
Annotation files for the Primula veris genome assemblyThe included files were produced with the Maker2 annotation pipeline.Pveris_Maker2_Genome_Annotation.tgz

Data from: A tale of two morphs: modeling pollen transfer, magic traits, and reproductive isolation in parapatry

Benjamin C. Haller, Jurriaan M. De Vos, Barbara Keller, Andrew P. Hendry & Elena Conti
The evolution of the flower is commonly thought to have spurred angiosperm diversification. Similarly, particular floral traits might have promoted diversification within specific angiosperm clades. We hypothesize that traits promoting the precise positional transfer of pollen between flowers might promote diversification. In particular, precise pollen transfer might produce partial reproductive isolation that facilitates adaptive divergence between parapatric populations differing in their reproductive-organ positions. We investigate this hypothesis with an individual-based model of pollen transfer dynamics...

Data from: Selection for niche differentiation in mixed plant communities increases biodiversity effects

Debra Zuppinger-Dingley, Bernhard Schmid, Jana S. Petermann, Varuna Yadav, Gerlinde B. De Deyn & Dan F. B. Flynn
In experimental plant communities, relationships between biodiversity and ecosystem functioning have been found to strengthen over time, a fact often attributed to increased resource complementarity between species in mixtures and negative plant–soil feedbacks in monocultures. Here we show that selection for niche differentiation between species can drive this increasing biodiversity effect. Growing 12 grassland species in test monocultures and mixtures, we found character displacement between species and increased biodiversity effects when plants had been selected...

Data from: Increased gene dosage plays a predominant role in the initial stages of evolution of duplicate TEM-1 beta lactamase genes

Riddhiman Dhar, Tobias Bergmiller & Andreas Wagner
Gene duplication is important in evolution, because it provides new raw material for evolutionary adaptations. Several existing hypotheses about the causes of duplicate retention and diversification differ in their emphasis on gene dosage, sub-functionalization, and neo-functionalization. Little experimental data exists on the relative importance of gene expression changes and changes in coding regions for the evolution of duplicate genes. Furthermore, we do not know how strongly the environment could affect this importance. To address these...

Data from: Interaction effects of cell diffusion, cell density and public goods properties on the evolution of cooperation in digital microbes

Akos Dobay, Homayoun C. Bagheri, Antonio Messina, Rolf Kümmerli & Daniel J. Rankin
Microbial cooperation typically consists in the sharing of secreted metabolites (referred to as public goods) within the community. Although public goods generally promote population growth, they are also vulnerable to exploitation by cheating mutants, which no longer contribute, but still benefit from the public goods produced by others. Although previous studies have identified a number of key factors that prevent the spreading of cheaters, little is known about how these factors interact and jointly shape...

Data from: Experimental evolution for generalists and specialists reveals multivariate genetic constraints on thermal reaction norms

David Berger, Richard J. Walters, Wolf U. Blanckenhorn, D. Berger, R. J. Walters & W. U. Blanckenhorn
Theory predicts the emergence of generalists in variable environments and antagonistic pleiotropy to favour specialists in constant environments, but empirical data seldom support such generalist–specialist trade-offs. We selected for generalists and specialists in the dung fly Sepsis punctum (Diptera: Sepsidae) under conditions that we predicted would reveal antagonistic pleiotropy and multivariate trade-offs underlying thermal reaction norms for juvenile development. We performed replicated laboratory evolution using four treatments: adaptation at a hot (31 °C) or a...

Data from: Demographic histories and genetic diversities of Fennoscandian marine and landlocked ringed seal subspecies

Tommi Nyman, Mia Valtonen, Jouni Aspi, Minna Ruokonen, Mervi Kunnasranta & Jukka U. Palo
Island populations are on average smaller, genetically less diverse, and at a higher risk to go extinct than mainland populations. Low genetic diversity may elevate extinction probability, but the genetic component of the risk can be affected by the mode of diversity loss, which, in turn, is connected to the demographic history of the population. Here, we examined the history of genetic erosion in three Fennoscandian ringed seal subspecies, of which one inhabits the Baltic...

Data from: Large-scale proteomics of the cassava storage root and identification of a target gene to reduce post-harvest deterioration

Hervé Vanderschuren, Evans Nyaboga, Jacquelyne S. Poon, Katja Baerenfaller, Jonas Grossmann, Matthias Hirsch-Hoffmann, Norbert Kirchgessner, Paolo Nanni & Wilhelm Gruissem
Cassava (Manihot esculenta) is the most important root crop in the tropics, but rapid postharvest physiological deterioration (PPD) of the root is a major constraint to commercial cassava production. We established a reliable method for image-based PPD symptom quantification and used label-free quantitative proteomics to generate an extensive cassava root and PPD proteome. Over 2600 unique proteins were identified in the cassava root, and nearly 300 proteins showed significant abundance regulation during PPD. We identified...

Data from: A relationship between attractiveness and performance in professional cyclists

Erik Postma
Females often prefer to mate with high quality males, and one aspect of quality is physical performance. Although a preference for physically fitter males is therefore predicted, the relationship between attractiveness and performance has rarely been quantified. Here, I test for such a relationship in humans and ask whether variation in (endurance) performance is associated with variation in facial attractiveness within elite professional cyclists that finished the 2012 Tour de France. I show that riders...

Data from: Incipient habitat race formation in an amphibian

Josh Van Buskirk
Theory defines conditions under which sympatric speciation may occur, and several possible examples of the process in action have been identified. In most cases, organisms specialize onto habitats that fall into discrete categories, such as host species used by herbivores and parasites. Ecological specialization within a continuous habitat gradient is theoretically possible, but becomes less likely with increasing gene flow among clinal habitat types. Here, I show that habitat race formation is underway in a...

Data from: Simple chained guide trees give poorer multiple sequence alignments than inferred trees in simulation and phylogenetic benchmarks

Ge Tan, Manuel Gil, Ari P. Löytynoja, Nick Goldman & Christophe Dessimoz
Multiple sequence aligners typically work by progressively aligning the most closely related sequences or group of sequences according to guide trees. In PNAS, Boyce et al. report that alignments reconstructed using simple chained trees (i.e., comb-like topologies) with random leaf assignment performed better in protein structure-based benchmarks than those reconstructed using phylogenies estimated from the data as guide trees. The authors state that this result could turn decades of research in the field on its...

Data from: Imbalance in individual researcher’s peer review activities quantified for four British Ecological Society Journals, 2003-2010

Owen L. Petchey, Jeremy W. Fox & Lindsay Haddon
Researchers contribute to the scientific peer review system by providing reviews, and “withdraw” from it by submitting manuscripts that are subsequently reviewed. So far as we are aware, there has been no quantification of the balance of individual's contributions and withdrawals. We compared the number of reviews provided by individual researchers (i.e., their contribution) to the number required by their submissions (i.e. their withdrawals) in a large and anonymised database provided by the British Ecological...

Data from: A new species of the paper wasp genus Polistes (Hymenoptera, Vespidae, Polistinae) in Europe revealed by morphometrics and molecular analyses

Rainer Neumeyer, Hannes Baur, Gaston-Denis Guex & Christophe Praz
We combine multivariate ratio analysis (MRA) of body measurements and analyses of mitochondrial and nuclear data to examine the status of several species of European paper wasps (Polistes Latreille, 1802) closely related to P. gallicus. Our analyses unambiguously reveal the presence of a cryptic species in Europe, as two distinct species can be recognized in what has hitherto been considered Polistes bischoffi Weyrauch, 1937. One species is almost as light coloured as P. gallicus, and...

Data from: Coevolutionary dynamics of polyandry and sex-linked meiotic drive

Luke Holman, Thomas A. R. Price, Nina Wedell & Hanna Kokko
Segregation distorters located on sex chromosomes are predicted to sweep to fixation and cause extinction via a shortage of one sex, but in nature they are often found at low, stable frequencies. One potential resolution to this long-standing puzzle involves female multiple mating (polyandry). Because many meiotic drivers severely reduce the sperm competitive ability of their male carriers, females are predicted to evolve more frequent polyandry and thereby promote sperm competition when a meiotic driver...

Data from: Species richness-productivity relationships of tropical terrestrial ferns at regional and local scales

Michael Kessler, Laura Salazar, Jürgen Homeier & Jürgen Kluge
1. The species richness-productivity relationship (SRPR), by which the species richness of habitats or ecosystems is related to the productivity of the ecosystem or the taxon, has been documented both on regional and local scales, but its generality, biological meaning, and underlying mechanisms remain debated. 2. We evaluated the SRPR and 3 mechanistic hypotheses using terrestrial ferns in 18 study plots along an elevational gradient (500-4000 m) in Ecuador. We measured annual increases in above-ground...

Registration Year

  • 2014
    41

Resource Types

  • Dataset
    41

Affiliations

  • University of Zurich
    41
  • Swiss Federal Institute of Technology in Zurich
    4
  • Swiss Federal Institute of Aquatic Science and Technology
    3
  • Swiss Institute of Bioinformatics
    2
  • Murdoch University
    2
  • University of Aberdeen
    2
  • University of Lausanne
    2
  • Philipp University of Marburg
    2
  • University of Bern
    2
  • University of British Columbia
    2