29 Works

Data from: Assessing reproductive isolation using a contact zone between parapatric lake-stream stickleback ecotypes

Dieta Hanson, Jean-Sébastien Moore, Eric B. Taylor, Rowan D.H. Barrett, Andrew P. Hendry, J.-S. Moore & R. D. H. Barrett
Ecological speciation occurs when populations evolve reproductive isolation as a result of divergent natural selection. This isolation can be influenced by many potential reproductive barriers, including selection against hybrids, selection against migrants, and assortative mating. How and when these barriers act and interact in nature is understood for relatively few empirical systems. We used a mark-recapture experiment in a contact zone between lake and stream three-spined sticklebacks (Gasterosteus aculeatus, Linnaeus) to evaluate the occurrence of...

Data from: Transcriptome profiling of immune tissues reveals habitat-specific gene expression between lake and river sticklebacks

Yun Huang, Frederic Chain, Mahesh Panchal, Christophe Eizaguirre, Martin Kalbe, Tobias Lenz, Irene Samonte, Monika Stoll, Erich Bornberg-Bauer, Thorsten B. Reusch, Manfred Milinski & Philine Feulner
The observation of habitat-specific phenotypes suggests the action of natural selection. The three-spined stickleback (Gasterosteus aculeatus) has repeatedly colonized and adapted to diverse freshwater habitats across the northern hemisphere since the last glaciation, while giving rise to recurring phenotypes associated with specific habitats. Parapatric lake and river populations of sticklebacks harbour distinct parasite communities, a factor proposed to contribute to adaptive differentiation between these ecotypes. However, little is known about the transcriptional response to the...

Data from: Predators inhibit brain cell proliferation in natural populations of electric fish, Brachyhypopomus occidentals

Kent D. Dunlap, Alex Tran, Michael Ragazzi, Rudiger Krahe, Vielka Salazar, Michael A. Ragazzi & Vielka L. Salazar
Compared to laboratory environments, complex natural environments promote brain cell proliferation and neurogenesis. Predators are one important feature of many natural environments, and, in the laboratory, predatory stimuli tend to inhibit brain cell proliferation. Often, laboratory predator stimuli also elevate plasma glucocorticoids, which can then reduce brain cell proliferation. However, it is unknown how natural predators affect cell proliferation or whether glucocorticoids mediate the neurogenic response to natural predators. We examined brain cell proliferation in...

Data from: Targeted reforestation could reverse declines in connectivity for understory birds in a tropical habitat corridor

Matthew E. Fagan, Ruth S. DeFries, Steven E. Sesnie, J. Pablo Arroyo-Mora & Robin L. Chazdon
Re-establishing connectivity between protected areas isolated by habitat clearing is a key conservation goal in the humid tropics. In northeastern Costa Rica, payments for environmental services (PES) and a government ban on deforestation have subsidized forest protection and reforestation in the San Juan–La Selva Biological Corridor (SJLSBC), resulting in a decline in mature forest loss and the expansion of tree plantations. We use field studies and graph models to assess how conservation efforts have altered...

Data from: Multiple pairwise analysis of non-homologous centromere coupling reveals preferential chromosome size-dependent interactions and a role for bouquet formation in establishing the interaction pattern

Philippe Lefrançois, Beth Rockmill, Pingxing Xie, G. Shirleen Roeder & Michael Snyder
During meiosis, chromosomes undergo a homology search in order to locate their homolog to form stable pairs and exchange genetic material. Early in prophase, chromosomes associate in mostly non-homologous pairs, tethered only at their centromeres. This phenomenon, conserved through higher eukaryotes, is termed centromere coupling in budding yeast. Both initiation of recombination and the presence of homologs are dispensable for centromere coupling (occurring in spo11 mutants and haploids induced to undergo meiosis) but the presence...

Data from: The wings before the bird: an evaluation of flapping-based locomotory hypotheses in bird antecedents

T. Alexander Dececchi, Hans C.E. Larsson & Michael B. Habib
Background. Powered flight is implicated as a major driver for the success of birds. Here we examine the effectiveness of three hypothesized pathways for the evolution of the flight stroke, the forelimb motion that powers aerial locomotion, in a terrestrial setting across a range of stem and basal avians: flap running, Wing Assisted Incline Running (WAIR), and wing-assisted leaping. Methods. Using biomechanical mathematical models based on known aerodynamic principals and in vivo experiments and ground...

Data from: Recent selection for self-compatibility in a population of Leavenworthia alabamica

Adam C. Herman & Daniel J. Schoen
The evolution of self-compatibility (SC) is the first step in the evolutionary transition in plants from outcrossing enforced by self-incompatibility (SI) to self-fertilization. In the Brassicaceae, SI is controlled by alleles of two tightly linked genes at the S-locus. Despite permitting inbreeding, mutations at the S-locus leading to SC may be selected if they provide reproductive assurance and/or gain a transmission advantage in a population when SC plants self- and outcross. Positive selection can leave...

Data from: Pyramids of species richness: the determinants and distribution of species diversity across trophic levels

Shaun Turney, Christoper M. Buddle & Christopher M. Buddle
How species richness is distributed across trophic levels determines several dimensions of ecosystem functioning, including herbivory, predation, and decomposition rates. We perform a meta-analysis of 72 large published food webs to investigate their trophic diversity structure and possible endogenous, exogenous, and methodological causal variables. Consistent with classic theory, we found that published food webs can generally be described as ‘pyramids of species richness’. The food webs were more predator-poor, prey-rich and hierarchical than is expected...

Data from: The coevolution of innovation and technical intelligence in primates

Ana F. Navarrete, Simon M. Reader, Sally E. Street, Andrew Whalen & Kevin N. Laland
In birds and primates, the frequency of behavioural innovation has been shown to covary with absolute and relative brain size, leading to the suggestion that large brains allow animals to innovate, and/or that selection for innovativeness, together with social learning, may have driven brain enlargement. We examined the relationship between primate brain size and both technical (i.e. tool using) and non-technical innovation, deploying a combination of phylogenetically informed regression and exploratory causal graph analyses. Regression...

Data from: Draft genome of the American eel (Anguilla rostrata)

Scott A. Pavey, Martin Laporte, Eric Normandeau, Jérémy Gaudin, Louis Létourneau, Sébastien Boisvert, Jacques Corbeil, Céline Audet & Louis Bernatchez
Freshwater eels (Anguilla sp.) have large economic, cultural, ecological and aesthetic importance worldwide, but they suffered more than 90% decline in global stocks over the past few decades. Proper genetic resources, such as sequenced, assembled and annotated genomes, are essential to help plan sustainable recoveries by identifying physiological, biochemical and genetic mechanisms that caused the declines or that may lead to recoveries. Here, we present the first sequenced genome of the American Eel. This genome...

Data from: There’s no place like home: the contribution of direct and extended phenotypes on the expression of spider aggressiveness

Pierre-Olivier Montiglio & Nicholas DiRienzo
Architectural constructions allow animals to modify their environment in order to improve their reproductive success. Constructions also modulate the expression of individual behavior, ultimately affecting the presence and importance of animal personality within populations. The exact impact of constructions on personality is seldom investigated. We quantified experimentally the impact of web characteristics on individual foraging behavior in the Western black widow spider (Latrodectus hesperus). We assayed aggressiveness toward a prey cue, and boldness while individuals...

Data from: Multilocus approaches for the measurement of selection on correlated genetic loci

Zachariah Gompert, Scott P. Egan, Rowan D. H. Barrett, Jeffrey L. Feder & Patrik Nosil
The study of ecological speciation is inherently linked to the study of selection. Methods for estimating phenotypic selection within a generation based on associations between trait values and fitness (e.g. survival) of individuals are established. These methods attempt to disentangle selection acting directly on a trait from indirect selection caused by correlations with other traits via multivariate statistical approaches (i.e. inference of selection gradients). The estimation of selection on genotypic or genomic variation could also...

Data from: Infectious disease, behavioural flexibility, and the evolution of culture in primates

Collin M. McCabe, Simon M. Reader & Charles L. Nunn
Culturally transmitted traits are observed in a wide array of animal species, yet we understand little about the costs of the behavioural patterns that underlie culture, such as innovation and social learning. We propose that infectious diseases are a significant cost associated with cultural transmission. We investigated two hypotheses that may explain such a connection: that social learning and exploratory behaviours (specifically, innovation and extractive foraging) either compensate for existing infection or increase exposure to...

Data from: Grazing-induced shifts in community functional composition and soil nutrient availability in Tibetan alpine meadows

Kechang Niu, Jin-Sheng He & Martin J. Lechowicz
The functional structure of plant communities can be altered by grazing through two main mechanisms: species turnover (i.e. changes in species occurrence and relative abundance) and intraspecific trait variability (ITV), which is driven by phenotypic responses of individual plants and shifts in the relative abundance of genotypic variants within species. Studies of grassland ecosystem function under grazing often focus on community changes induced by species turnover, which ignores the effects of ITV on biomass productivity,...

Data from: The context dependence of assortative mating: a demonstration with conspecific salmonid populations

Zoé Gauthey, Andrew P. Hendry, Arturo Elosegi, Cédric Tentelier & Jacques Labonne
Assortative mating is thought to play a key role in reproductive isolation. However, most experimental studies of assortative mating do not take place in multiple natural environments and, hence, they ignore its potential context dependence. We implemented an experiment in which two populations of brown trout (Salmo trutta) with different natural flow regimes were placed into semi-natural stream channels under two different artificial flow regimes. Natural reproduction was allowed and reproductive isolation was measured by...

Data from: Experimental evidence does not support the Habitat Amount Hypothesis

Nick M. Haddad, Andrew Gonzalez, Lars A. Brudvig, Melissa A. Burt, Douglas J. Levey & Ellen I. Damschen
For a half century, habitat configuration – the arrangement of habitat patches within a landscape – has been central to theories of landscape ecology, population dynamics, and community assembly, in addition to conservation strategies. A recent hypothesis advanced by Fahrig (2013) would, if supported, greatly diminish the relevance of habitat configuration as a predictor of diversity. The Habitat Amount Hypothesis posits that the sample area effect overrides patch size and patch isolation effects of habitat...

Data from: Parallel and non-parallel behavioural evolution in response to parasitism and predation in Trinidadian guppies

Lisa Jacquin, Simon M. Reader, Amandine Boniface, Jaquelynn Mateluna, Iola Patalas, Felipe Pérez-Jvostov & Andrew P. Hendry
Natural enemies such as predators and parasites are known to shape intra-specific variability of behaviour and personality in natural populations, yet several key questions remain: (1) What is the relative importance of predation versus parasitism in shaping intra-specific variation of behaviour across generations? (2) What are the contributions of genetic and plastic effects to this behavioural divergence? And (3) to what extent are responses to predation and parasitism repeatable across independent evolutionary lineages? We addressed...

Data from: An objective approach to select climate scenarios when projecting species distribution under climate change

Nicolas Casajus, Catherine Périé, Travis Logan, Marie-Claude Lambert, Sylvie De Blois & Dominique Berteaux
Occurrences data for three Northeastern-American tree speciestrees_occurrences.zip

Data from: Divergence maintained by climatic selection despite recurrent gene flow: a case study of Castanopsis carlesii (Fagaceae)

Ye Sun, Yann Surget-Groba & Shaoxiong Gao
Local adaptation to different environments has the potential to maintain divergence between populations despite recurrent gene flow and is an important driver for generating biological diversity. In this study, we investigate the role of adaptation in the maintenance of two parapatric varieties of a forest tree. We used sequence variation of chloroplastic DNA and restriction site-associated DNA to investigate the genetic structure of two varieties of Castanopsis carlesii in subtropical China and relate it to...

Data from: Age and early social environment influence guppy social learning propensities

Ioannis Leris & Simon M. Reader
Social learning, learning from others, allows animals to quickly and adaptively adjust to changing environments, but only if social learning provides reliable, useful information in that environment. Early life conditions provide a potential cue to the reliability of social information later in life. Here, we addressed whether direct early life experience of the utility of social learning influences later social learning propensities. We reared guppy, Poecilia reticulata, fry for 45 days in three different social...

Data from: Neural correlations enable invariant coding and perception of natural stimuli in weakly electric fish

Michael G. Metzen, Volker Hofmann & Maurice J. Chacron
Neural representations of behaviorally relevant stimulus features displaying invariance with respect to different contexts are essential for perception. However, the mechanisms mediating their emergence and subsequent refinement remain poorly understood in general. Here, we demonstrate that correlated neural activity allows for the emergence of an invariant representation of natural communication stimuli that is further refined across successive stages of processing in the weakly electric fish Apteronotus leptorhynchus. Importantly, different patterns of input resulting from the...

Data from: Individual variation in energy-saving heterothermy affects survival and reproductive success

Melanie Dammhahn, Manuelle Landry-Cuerrier, Denis Réale, Dany Garant & Murray M. Humphries
Given fundamental energetic trade-offs among growth, maintenance and reproduction, individual differences in energy saving should have consequences for survival and reproductive success. Many endotherms use periodic heterothermy to reduce energy and water requirements and individual variation in heterothermy should have fitness consequences. However, attempts to disentangle individual- and population-level variation in heterothermy are scarce. Here, we quantified patterns of heterothermy of 55 free-ranging eastern chipmunks (Tamias striatus), food-hoarding hibernators. Over five hibernation periods, we obtained...

Data from: Using playback of territorial calls to investigate mechanisms of kin discrimination in red squirrels

Julia Shonfield, Jamieson C. Gorrell, David W. Coltman, Stan Boutin, Murray M. Humphries, David Wilson & Andrew G. McAdam
Kin recognition can facilitate kin selection and may have played a role in the evolution of sociality. Red squirrels (Tamiasciurus hudsonicus) defend territories using vocalizations known as rattles. They use rattles to discriminate kin, though the mechanism underlying this ability is unknown. Our objective was to distinguish between the mechanisms of prior association, where animals learn the phenotypes of kin they associate with early in life, and phenotype matching/recognition alleles, where animals use a template...

Data from: The contribution of developmental experience vs. condition to life history, trait variation, and individual differences

Nicholas DiRienzo & Pierre-Olivier Montiglio
Developmental experience, for example food abundance during juvenile stages, is known to affect life history and behaviour. However, the life history and behavioural consequences of developmental experience have rarely been studied in concert. As a result it is still unclear whether developmental experience affects behaviour through changes in life history, or independently of it. The effect of developmental experience on life history and behaviour may also be masked or affected by individual condition during adulthood....

Data from: Correlational selection on personality and social plasticity: morphology and social context determine behavioural effects on mating success

Pierre-Olivier Montiglio, Tina W. Wey, Ann T. Chang, Sean Fogarty & Andrew Sih
Despite a central line of research aimed at quantifying relationships between mating success and sexually dimorphic traits (e.g., ornaments), individual variation in sexually selected traits often explains only a modest portion of the variation in mating success. Another line of research suggests that a significant portion of the variation in mating success observed in animal populations could be explained by correlational selection, where the fitness advantage of a given trait depends on other components of...

Registration Year

  • 2016

Resource Types

  • Dataset


  • McGill University
  • Université Laval
  • University of California, Davis
  • University of Montreal
  • University of Wisconsin-Madison
  • University of the Basque Country
  • Rice University
  • Utah State University
  • Columbia University
  • Université de Sherbrooke