50 Works

Data from: Fine-scale kin recognition in the absence of social familiarity in the Siberian jay, a monogamous bird species

Michael Griesser, Peter Halvarsson, Szymon M. Drobniak & Carles Vilà
Kin recognition is a critical element to kin cooperation, and in vertebrates, it is primarily based on associative learning. Recognition of socially unfamiliar kin occurs rarely, and it is reported only in vertebrate species where promiscuity prevents recognition of first-order relatives. However, it is unknown whether the recognition of socially unfamiliar kin can evolve in monogamous species. Here, we investigate whether genetic relatedness modulates aggression among group members in Siberian jays (Perisoreus infaustus). This bird...

Data from: Discordant patterns of genetic and phenotypic differentiation in five grasshopper species co-distributed across a microreserve network

Joaquín Ortego, Vicente García-Navas, Víctor Noguerales & Pedro Javier Cordero
Conservation plans can be greatly improved when information on the evolutionary and demographic consequences of habitat fragmentation is available for several co-distributed species. Here, we study spatial patterns of phenotypic and genetic variation among five grasshopper species that are co-distributed across a network of microreserves but show remarkable differences in dispersal-related morphology (body size and wing length), degree of habitat specialization and extent of fragmentation of their respective habitats in the study region. In particular,...

Data from: Anxiety-like behavioural inhibition is normative under environmental threat-reward correlations

Dominik R. Bach
Behavioural inhibition is a key anxiety-like behaviour in rodents and humans, distinct from avoidance of danger, and reduced by anxiolytic drugs. In some situations, it is not clear how behavioural inhibition minimises harm or maximises benefit for the agent, and can even appear counterproductive. Extant explanations of this phenomenon make use of descriptive models but do not provide a formal assessment of its adaptive value. This hampers a better understanding of the neural computations underlying...

Data from: Small beetle, large-scale drivers: how regional and landscape factors affect outbreaks of the European spruce bark beetle

Rupert Seidl, Jörg Müller, Torsten Hothorn, Claus Bässler, Marco Heurich & Markus Kautz
Unprecedented bark beetle outbreaks have been observed for a variety of forest ecosystems recently, and damage is expected to further intensify as a consequence of climate change. In Central Europe, the response of ecosystem management to increasing infestation risk has hitherto focused largely on the stand level, while the contingency of outbreak dynamics on large-scale drivers remains poorly understood. To investigate how factors beyond the local scale contribute to the infestation risk from Ips typographus...

Data from: Complementarity in both plant and mycorrhizal fungal communities are not necessarily increased by diversity in the other

Cameron Wagg, Christoph Barendregt, Jan Jansa, Marcel G. A. Van Der Heijden & Marcel G.A. Van Der Heijden
1. Higher species diversity can improve community performance within a species guild when different species complement each other in their use of the available niche, such as through resource partitioning. However, species in one guild of organisms may act as resources for another such that the diversity in one guild alters the realized niche for species in another. Yet, it remains largely untested as to whether diversity in one guild of organisms influences species complementarity...

Data from: High genetic variation in resting stage production in a metapopulation: is there evidence for local adaptation?

Anne Carole Roulin, Mahendra Mariadassou, Matthew D. Hall, Jean-Claude Walser, Christoph Haag & Dieter Ebert
Local adaptation is a key process for the maintenance of genetic diversity and population diversification. A better understanding of the mechanisms that allow (or prevent) local adaptation constitutes a key in apprehending how and at what spatial scale it occurs. The production of resting stages is found in many taxa and reflects an adaptation to outlast adverse environmental conditions. Daphnia magna (Crustacea) can alternate between asexual and sexual reproduction, the latter being linked to dormancy,...

Data from: Food provisioning alters infection dynamics in populations of a wild rodent

Kristian M. Forbes, Heikki Henttonen, Varpu Hirvelä-Koski, Anja Kipar, Tapio Mappes, Peter Stuart & Otso Huitu
While pathogens are often assumed to limit the growth of wildlife populations, experimental evidence for their effects is rare. A lack of food resources has been suggested to enhance the negative effects of pathogen infection on host populations, but this theory has received little investigation. We conducted a replicated two-factor enclosure experiment, with introduction of the bacterium Bordetella bronchiseptica and food supplementation, to evaluate the individual and interactive effects of pathogen infection and food availability...

Data from: Nested species interactions promote feasibility over stability during the assembly of a pollinator community

Serguei Saavedra, Rudolf P. Rohr, Jens M. Olesen & Jordi Bascompte
The foundational concepts behind the persistence of ecological communities have been based on two ecological properties: dynamical stability and feasibility. The former is typically regarded as the capacity of a community to return to an original equilibrium state after a perturbation in species abundances and is usually linked to the strength of interspecific interactions. The latter is the capacity to sustain positive abundances on all its constituent species and is linked to both interspecific interactions...

Data from: The influence of landscape configuration and environment on population genetic structure in a sedentary passerine: insights from loci located in different genomic regions

Esperanza S. Ferrer, Vicente García-Navas, Javier Bueno-Enciso, Rafael Barrientos, Eva Serrano-Davies, Conchi Cáliz-Campal, Juan J. Sanz & Joaquín Ortego
The study of the factors structuring genetic variation can help to infer the neutral and adaptive processes shaping the demographic and evolutionary trajectories of natural populations. Here, we analyse the role of isolation-by distance (IBD), isolation-by-resistance (IBR, defined by landscape composition), and isolation by environment (IBE, estimated as habitat and elevation dissimilarity) in structuring genetic variation of 25 blue tit (Cyanistes caeruleus) populations. We typed 1385 individuals at 26 microsatellite loci classified in two groups...

Data from: Efficient detection of novel nuclear markers for Brassicaceae by transcriptome sequencing

Reinhold Stockenhuber, Stefan Zoller, Rie Shimizu-Inatsugi, Felix Gugerli, Kentaro K. Shimizu, Alex Widmer & Martin C. Fischer
The lack of DNA sequence information for most non-model organisms impairs the design of primers that are universally applicable for the study of molecular polymorphisms in nuclear markers. Next-generation sequencing (NGS) techniques nowadays provide a powerful approach to overcome this limitation. We present a flexible and inexpensive method to identify large numbers of nuclear primer pairs that amplify in most Brassicaceae species. We first obtained and mapped NGS transcriptome sequencing reads from two of the...

Data from: Remarkably divergent regions punctuate the genome assembly of the Caenorhabditis elegans Hawaiian strain CB4856

Owen A. Thompson, L. Basten Snoek, Harm Nijveen, Mark G. Sterken, Rita J. M. Volkers, Rachel Brenchley, Arjen Van't Hof, Roel P. J. Bevers, Andrew R. Cossins, Itai Yanai, Alex Hajnal, Tobias Schmid, Jaryn D. Perkins, David Spencer, Leonid Kruglyak, Erik C. Andersen, Donald G. Moerman, LaDeana W. Hillier, Jan E. Kammenga & Robert H. Waterston
The Hawaiian strain (CB4856) of Caenorhabditis elegans is one of the most divergent from the canonical laboratory strain N2 and has been widely used in developmental, population and evolutionary studies. To enhance the utility of the strain, we have generated a draft sequence of the CB4856 genome, exploiting a variety of resources and strategies. The CB4856 genome when compared against the N2 reference has 327,050 single nucleotide variants (SNVs) and 79,529 insertion-deletion events (indels) that...

Data from: Character evolution and the origin of Caimaninae (Crocodylia) in the New World Tropics: new evidence from the Miocene of Panama and Venezuela

Alexander K. Hastings, Moritz Reisser & Torsten M. Scheyer
Alligators and caimans share a close relationship, supported by both molecular and morphological characters. The divergence between alligators and caimans has been difficult to discern in the fossil record. Two basal taxa have recently been described from the Miocene of Panama and Venezuela but have not yet been presented in a joint phylogeny. Continued preparation of the type material of the Venezuelan Globidentosuchus brachyrostris Scheyer et al., 2013 has revealed new characters for scoring in...

Data from: Globally, functional traits are weak predictors of juvenile tree growth, and we do not know why

C. E. Timothy Paine, Lucy Amissah, Harald Auge, Christopher Baraloto, Martin Baruffol, Nils Bourland, Helge Bruelheide, Kasso Daïnou, Roland C. De Gouvenain, Jean-Louis Doucet, Susan Doust, Paul V. A. Fine, Claire Fortunel, Josephine Haase, Karen D. Holl, Hervé Jactel, Xuefei Li, Kaoru Kitajima, Julia Koricheva, Cristina Martínez-Garza, Christian Messier, Alain Paquette, Christopher Philipson, Daniel Piotto, Lourens Poorter … & Andy Hector
1. Plant functional traits, in particular specific leaf area (SLA), wood density and seed mass, are often good predictors of individual tree growth rates within communities. Individuals and species with high SLA, low wood density and small seeds tend to have faster growth rates. 2. If community-level relationships between traits and growth have general predictive value, then similar relationships should also be observed in analyses that integrate across taxa, biogeographic regions and environments. Such global...

Data from: Detrimental effects of an autosomal selfish genetic element on sperm competitiveness in house mice

Andreas Sutter & Anna K. Lindholm
Female multiple mating (polyandry) is widespread across many animal taxa and indirect genetic benefits are a major evolutionary force favouring polyandry. An incentive for polyandry arises when multiple mating leads to sperm competition that disadvantages sperm from genetically inferior mates. A reduction in genetic quality is associated with costly selfish genetic elements (SGEs), and studies in invertebrates have shown that males bearing sex ratio distorting SGEs are worse sperm competitors than wild-type males. We used...

Data from: Mother-offspring and nest mate resemblance but no heritability in early-life telomere length in white-throated dippers

Philipp J. J. Becker, Sophie Reichert, Sandrine Zahn, Johann Hegelbach, Sylvie Massemin, Lukas F. Keller, Erik Postma & François Criscuolo
Telomeres are protective DNA–protein complexes located at the ends of eukaryotic chromosomes, whose length has been shown to predict life-history parameters in various species. Although this suggests that telomere length is subject to natural selection, its evolutionary dynamics crucially depends on its heritability. Using pedigree data for a population of white-throated dippers (Cinclus cinclus), we test whether and how variation in early-life relative telomere length (RTL, measured as the number of telomeric repeats relative to...

Data from: Differential effects of maternal yolk androgens on male and female offspring: a role for sex-specific selection?

Barbara Tschirren
Maternal hormones are important mediators of prenatal maternal effects in animals. Although their effects on offspring phenotype are often sex-specific, the reason why sometimes sons are more sensitive to prenatal hormone exposure and sometimes daughters is not well understood. Here I combine an experimental manipulation of yolk testosterone concentration in the egg and quantification of selection acting on yolk androgen-sensitive traits in a natural population of great tits (Parus major) with a literature review to...

Data from: Parental effects alter the adaptive value of an adult behavioural trait

Rebecca M. Kilner, Giuseppe Boncoraglio, Jono M. Henshaw, Benjamin J. M. Jarrett, Ornela De Gasperin, Hanna Kokko, Benjamin JM Jarrett, Alfredo Attisano & Jonathan M Henshaw
The parents' phenotype, or the environment they create for their young, can have long-lasting effects on their offspring, with profound evolutionary consequences. Yet virtually no work has considered how such parental effects might change the adaptive value of behavioural traits expressed by offspring upon reaching adulthood. To address this problem, we combined experiments on burying beetles (Nicrophorus vespilloides) with theoretical modelling, and focussed on one adult behavioural trait in particular: the supply of parental care....

Data from: Molecular insights into the lichen genus Alectoria (Parmeliaceae) in North America

Richard Troy McMullin, James C. Lendemer, Heather E. Braid & Steven G. Newmaster
Alectoria is a genus of fruticose lichen characterised by the presence of usnic acid and conspicuous raised pseudocyphellae. This genus is particularly diverse and abundant in montane, boreal, and Arctic regions of North America. Because intermediate forms have been reported for several species of Alectoria on the continent, it has been suggested that these species were initially delimited based on the extremes of morphological gradients. Here, we use the results of molecular phylogenetic analyses of...

Data from: HDAC1/2-dependent P0 expression maintains paranodal and nodal integrity independently of myelin stability through interactions with neurofascins

Valérie Brügger, Stefanie Engler, Jorge A. Pereira, Sophie Ruff, Michael Horn, Hans Welzl, Emmanuelle Münger, Adrien Vaquié, Páris N. M. Sidiropoulos, Boris Egger, Peter Yotovski, Luis Filgueira, Christian Somandin, Tessa C. Lühmann, Maurizio D’Antonio, Teppei Yamaguchi, Patrick Matthias, Ueli Suter & Claire Jacob
The pathogenesis of peripheral neuropathies in adults is linked to maintenance mechanisms that are not well understood. Here, we elucidate a novel critical maintenance mechanism for Schwann cell (SC)–axon interaction. Using mouse genetics, ablation of the transcriptional regulators histone deacetylases 1 and 2 (HDAC1/2) in adult SCs severely affected paranodal and nodal integrity and led to demyelination/remyelination. Expression levels of the HDAC1/2 target gene myelin protein zero (P0) were reduced by half, accompanied by altered...

Data from: Resolving the conundrum of inbreeding depression but no inbreeding avoidance: estimating sex-specific selection on inbreeding by song sparrows (Melospiza melodia)

Jane M. Reid, Peter Arcese, Greta Bocedi, Alexander Bradley Duthie, Matthew Ernest Wolak & Lukas F. Keller
Inbreeding avoidance among interacting females and males is not always observed despite inbreeding depression in offspring fitness, creating an apparent ‘inbreeding paradox’. This paradox could be resolved if selection against inbreeding was in fact weak, despite inbreeding depression. However, the net magnitude and direction of selection on the degree to which females and males inbreed by pairing with relatives has not been explicitly estimated. We used long-term pedigree data to estimate phenotypic selection gradients on...

Data from: Current methods for automated filtering of multiple sequence alignments frequently worsen single-gene phylogenetic inference

Ge Tan, Matthieu Muffato, Christian Ledergerber, Javier Herrero, Nick Goldman, Manuel Gil & Christophe Dessimoz
Phylogenetic inference is generally performed on the basis of multiple sequence alignments (MSA). Because errors in an alignment can lead to errors in tree estimation, there is a strong interest in identifying and removing unreliable parts of the alignment. In recent years several automated filtering approaches have been proposed, but despite their popularity, a systematic and comprehensive comparison of different alignment filtering methods on real data has been lacking. Here, we extend and apply recently...

Data from: How well can body size represent effects of the environment on demographic rates? Disentangling correlated explanatory variables

Mollie E. Brooks, Marianne Mugabo, Gwendolen M. Rogers, Timothy G. Benton, Arpat Ozgul & Gwendolen M. Rodgers
Demographic rates are shaped by the interaction of past and current environments that individuals in a population experience. Past environments shape individual states via selection and plasticity, and fitness-related traits (e.g. individual size) are commonly used in demographic analyses to represent the effect of past environments on demographic rates. We quantified how well the size of individuals captures the effects of a population's past and current environments on demographic rates in a well-studied experimental system...

Data from: Irrational time allocation in decision-making

Bastiaan Oud, Ian M. Krajbich, Kevin Miller, Jin Cheong, Matthew Botvinick, Ernst Fehr, Jin Hyun Cheong & Ian Krajbich
Time is an extremely valuable resource but little is known about the efficiency of time allocation in decision making. Empirical evidence suggests that in many ecologically relevant situations, decision difficulty and the relative reward from making a correct choice, compared to an incorrect one, are inversely linked, implying that it is optimal to use relatively less time for difficult choice problems. This applies, in particular, to value-based choices, in which the relative reward from choosing...

Data from: On the complexity of triggering evolutionary radiations

Yanis Bouchenak-Khelladi, Renske E. Onstein, Yaowu Xing, Orlando Schwery & H. Peter Linder
Recent developments in phylogenetic methods have made it possible to reconstruct evolutionary radiations from extant taxa, but identifying the triggers of radiations is still problematic. Here, we propose a conceptual framework to explore the role of variables that may impact radiations. We classify the variables into extrinsic conditions vs intrinsic traits, whether they provide background conditions, trigger the radiation, or modulate the radiation. We used three clades representing angiosperm phylogenetic and structural diversity (Ericaceae, Fagales...

Data from: Sperm number trumps sperm size in mammalian ejaculate evolution

Stefan Lüpold & John L. Fitzpatrick
Postcopulatory sexual selection is widely accepted to underlie the extraordinary diversification of sperm morphology. However, why does it favour longer sperm in some taxa but shorter in others? Two recent hypotheses addressing this discrepancy offered contradictory explanations. Under the sperm dilution hypothesis, selection via sperm density in the female reproductive tract favours more but smaller sperm in large, but the reverse in small, species. Conversely, the metabolic constraint hypothesis maintains that ejaculates respond positively to...

Registration Year

  • 2015
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Resource Types

  • Dataset
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Affiliations

  • University of Zurich
    50
  • Uppsala University
    5
  • Estación Biológica de Doñana
    3
  • University of Cambridge
    3
  • University of Fribourg
    3
  • University of Sheffield
    3
  • University of Washington
    2
  • Swiss Federal Institute of Aquatic Science and Technology
    2
  • University of Gothenburg
    2
  • French National Institute for Agricultural Research
    2