13 Works

Data from: Heavily hunted wolves have higher stress and reproductive steroids than wolves with lower hunting pressure

Heather Bryan, Judit Smits, Lee Koren, Paul Paquet, Marco Musiani, Katherine Wynne-Edwards, Paul C. Paquet, Heather M. Bryan, Judit E. G. Smits & Katherine E. Wynne-Edwards
1. Human-caused harassment and mortality (e.g. hunting) affects many aspects of wildlife population dynamics and social structure. Little is known, however, about the social and physiological effects of hunting, which might provide valuable insights into the mechanisms by which wildlife respond to human-caused mortality. To investigate physiological consequences of hunting, we measured stress and reproductive hormones in hair, which reflect endocrine activity during hair growth. Applying this novel approach, we compared steroid hormone levels in...

Data from: Impacts of genetic correlation on the independent evolution of body mass and skeletal size in mammals

Marta Marchini, Leah Sparrow, Miranda Cosman, Alexandra S. Dowhanik, Carsten B. Krueger, Benedikt Hallgrimsson & Campbell Rolian
Mammals show a predictable scaling relationship between limb bone size and body mass. This relationship has a genetic basis which likely evolved via natural selection but it is unclear how much the genetic correlation between these traits in turn impacts their capacity to evolve independently. We selectively bred laboratory mice for increases in tibia length independent of body mass to test the hypothesis that a genetic correlation with body mass constrains evolutionary change in tibia...

Data from: Using a ‘time machine’ to test for local adaptation of aquatic microbes to temporal and spatial environmental variation

Jeremy W. Fox & Lawrence D. Harder
Local adaptation occurs when different environments are dominated by different specialist genotypes, each of which is relatively fit in its local conditions and relatively unfit under other conditions. Analogously, ecological species sorting occurs when different environments are dominated by different competing species, each of which is relatively fit in its local conditions. The simplest theory predicts that spatial, but not temporal, environmental variation selects for local adaptation (or generates species sorting), but this prediction is...

Data from: New pantolestids (Mammalia; Eutheria) from the late Paleocene (late middle Tiffanian) Roche Percée local fauna, southeastern Saskatchewan, Canada

Brian D. Rankin
The Pantolestidae are an extinct family of mammals known principally from the early Paleocene to late Oligocene (from approximately 64 to 30 million years ago) of North America and Europe. Although never particularly abundant, pantolestids are relatively well represented in the Eocene and Oligocene, with several taxa known from exceptionally well-preserved skulls and postcranial material. The early evolutionary history of the group, however, similar to that of many contemporaneous mammals, remains comparatively poorly known. The...

Data from: Genetic population structure in prickly sculpin (Cottus asper) reflects isolation by environment between two life history ecotypes

Stefan Dennenmoser, Sean M. Rogers & Steven M. Vamosi
Life-history transitions have evolved repeatedly in numerous taxa, although the ecological and evolutionary conditions favouring such transitions in the presence of gene flow remain poorly understood. The present study aimed to disentangle the effects of isolation-by-distance and isolation-by-environment on genetic differentiation between two sympatric life-history ecotypes. Using 14 microsatellite loci, we first characterized amphidromous and freshwater groups of Cottus asper in a high gene flow setting in the Lower Fraser River system (south-western British Columbia,...

Data from: The consequences of demand-driven seed provisioning for sexual differences in reproductive investment in Thalictrum occidentale (Ranunculaceae)

Takashi Y. Ida, Lawrence D. Harder & Gaku Kudo
Many iteroparous angiosperms may benefit from flexible annual resource allocation in response to variable reproductive opportunities induced by external conditions. If maximal reproductive investment is fixed, lack of reproductive sinks would cause resource redistribution to other sinks. Alternatively, reproductive investment may vary depending on the demand of reproductive sinks, changing source-sink relations. In particular, differential responses by males and females to the demands of flower and seed production may cause sexual dimorphism. We assess the...

Data from: Shape-shift: semicircular canal morphology responds to selective breeding for increased locomotor activity

Heidi Schutz, Heather A. Jamniczky, Benedikt Hallgrímsson, & Theodore Garland
Variation in semicircular canal morphology correlates with locomotor agility among species of mammals. An experimental evolutionary mouse model was used to test the hypotheses that semicircular canal morphology (1) evolves in response to selective breeding for increased locomotor activity, (2) exhibits phenotypic plasticity in response to early-onset chronic exercise, and (3) is unique in individuals possessing the minimuscle phenotype. We examined responses in canal morphology to prolonged wheel access and selection in laboratory mice from...

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: Gene expression plasticity evolves in response to colonization of freshwater lakes in threespine stickleback

Matthew R. J. Morris, Romain Richard, Erica H. Leder, Rowan D. H. Barrett, Nadia Aubin-Horth & Sean M. Rogers
Phenotypic plasticity is predicted to facilitate individual survival and/or evolve in response to novel environments. Plasticity that facilitates survival should both permit colonization and act as a buffer against further evolution, with contemporary and derived forms predicted to be similarly plastic for a suite of traits. On the other hand, given the importance of plasticity in maintaining internal homeostasis, derived populations that encounter greater environmental heterogeneity should evolve greater plasticity. We tested the evolutionary significance...

Data from: The functional and palaeoecological implications of tooth morphology and wear for the megaherbivorous dinosaurs from the Dinosaur Park Formation (upper Campanian) of Alberta, Canada

Jordan C. Mallon & Jason S. Anderson
Megaherbivorous dinosaurs were exceptionally diverse on the Late Cretaceous island continent of Laramidia, and a growing body of evidence suggests that this diversity was facilitated by dietary niche partitioning. We test this hypothesis using the fossil megaherbivore assemblage from the Dinosaur Park Formation (upper Campanian) of Alberta as a model. Comparative tooth morphology and wear, including the first use of quantitative dental microwear analysis in the context of Cretaceous palaeosynecology, are used to infer the...

Data from: Phylogenetic tree shape and the structure of mutualistic networks

Scott Chamberlain, Diego P. Vázquez, Luisa Carvalheiro, Elizabeth Elle & Jana C. Vamosi
Species community composition is known to alter the network of interactions between two trophic levels, potentially affecting its functioning (e.g. plant pollination success) and the stability of communities. Phylogenies vary in shape with regard to the rate of evolutionary change across a tree (influencing tree balance) and variation in the timing of branching events (affecting the distribution of node ages in trees), both of which may influence the structure of species interaction networks. Because related...

Data from: Species traits and abundances predict metrics of plant–pollinator network structure, but not pairwise interactions

Colin Olito & Jeremy W. Fox
Plant–pollinator mutualistic networks represent the ecological context of foraging (for pollinators) and reproduction (for plants and some pollinators). Plant–pollinator visitation networks exhibit highly conserved structural properties across diverse habitats and species assemblages. The most successful hypotheses to explain these network properties are the neutrality and biological constraints hypotheses, which posit that species interaction frequencies can be explained by species relative abundances, and trait mismatches between potential mutualists respectively. However, previous network analyses emphasize the prediction...

Data from: Subdigital adhesive pad morphology varies in relation to structural habitat use in the Namib Day Gecko, Rhoptropus afer

Clint E. Collins, Anthony P. Russell & Timothy E. Higham
1. Morphological features that lead to increased locomotor performance, such as faster sprint speed, are thought to evolve in concert with habitat use. The latter depends on available habitat structure, and how the animal moves within that habitat. Thus, this behavioral variation will impact how natural selection acts on locomotion and morphology. 2. Quantifying the interplay between escape behavior and locomotor morphology across habitats that vary in structural composition could reveal how selection acts on...

Registration Year

  • 2014
    13

Resource Types

  • Dataset
    13

Affiliations

  • University of Calgary
    13
  • University of California, Riverside
    2
  • British Ecological Society
    1
  • University of California System
    1
  • McGill University
    1
  • Pacific Lutheran University
    1
  • Simon Fraser University
    1
  • University of Leeds
    1
  • University of Zurich
    1
  • Hokkaido University
    1