11 Works

Data from: High temperature intensifies negative density dependence of fitness in red flour beetles

William D. Halliday, Alison S. Thomas & Gabriel Blouin-Demers
Competition for food, space, or other depletable resources has strong impacts on the fitness of organisms and can lead to a pattern known as negative density dependence, where fitness decreases as population density increases. Yet, many resources that have strong impacts on fitness are nondepletable (e.g., moisture or temperature). How do these nondepletable resources interact with depletable resources to modify negative density dependence? We tested the hypothesis that negative density dependence is modulated by temperature...

Data from: Tracking the history and ecological changes of rising double-crested cormorant populations using pond sediments from islands in eastern Lake Ontario

Emily M. Stewart, Neal Michelutti, Sarah Shenstone-Harris, Christopher Grooms, Chip Weseloh, Linda E. Kimpe, Jules M. Blais & John P. Smol
In the Laurentian Great Lakes region, the double-crested cormorant (Phalacrocorax auritus) has seen a thousand-fold population increase in recent decades. These large colonies of birds now often conflict with socioeconomic interests, particularly due to perceived competition with fisheries and the destruction of terrestrial vegetation in nesting habitats. Here we use dated sediment cores from ponds on islands in eastern Lake Ontario that receive waste inputs from dense colonies of cormorants and ring-billed gulls (Larus delawarensis)...

Data from: Experimental evidence of condition-dependent sexual dimorphism in the weakly dimorphic antler fly, Protopiophila litigata (Diptera: Piophilidae)

Mathieu J. Oudin, Russell Bonduriansky & Howard D. Rundle
Sexually dimorphic traits have a history of directional selection for exaggeration in at least one sex. Theory suggests that traits targeted by persistent selection should evolve heightened condition dependence whereby their expression reflects the availability and processing efficiency of metabolic resources. This joint dependence of sexual dimorphism and condition dependence on directional selection should result in a positive correlation between the extent of sexual dimorphism and the strength of condition dependence. However, because direct phenotypic...

Data from: Mitochondrial responses to prolonged anoxia in brain of Red-eared slider turtles

Matthew E. Pamenter, Crisostomo R. Gomez, Jeffrey G. Richards & William K. Milsom
Mitochondria are central to aerobic energy production and play a key role in neuronal signalling. During anoxia, however, the mitochondria of most vertebrates initiate deleterious cell death cascades. Nonetheless, a handful of vertebrate species, including some freshwater turtles, are remarkably tolerant of low oxygen environments and survive months of anoxia without apparent damage to brain tissue. This tolerance suggests that mitochondria in the brains of such species are adapted to withstand prolonged anoxia, but little...

Data from: Conspicuous female ornamentation and tests of male mate preference in threespine sticklebacks (Gasterosteus aculeatus)

Daniel Shane Wright, Michele E.R. Pierotti, Howard D. Rundle, Jeffrey S. McKinnon & Michele E. R. Pierotti
Sexual selection drives the evolution of exaggerated male ornaments in many animal species. Female ornamentation is now acknowledged also to be common but is generally less well understood. One example is the recently documented red female throat coloration in some threespine stickleback (Gasterosteus aculeatus) populations. Although female sticklebacks often exhibit a preference for red male throat coloration, the possibility of sexual selection on female coloration has been little studied. Using sequential and simultaneous mate choice...

Data from: Climate change impacts on bumblebees converge across continents

Jeremy T. Kerr, Alana Pindar, Paul Galpern, Laurence Packer, Stuart M. Roberts, Pierre Rasmont, Oliver Schweiger, Sheila R. Colla, Leif L. Richardson, David L. Wagner, Lawrence F. Gall, Derek S. Sikes & Alberto Pantoja
For many species, geographical ranges are expanding toward the poles in response to climate change, while remaining stable along range edges nearest the equator. Using long-term observations across Europe and North America over 110 years, we tested for climate change–related range shifts in bumblebee species across the full extents of their latitudinal and thermal limits and movements along elevation gradients. We found cross-continentally consistent trends in failures to track warming through time at species’ northern...

Data from: The causes of selection on flowering time through male fitness in a hermaphroditic annual plant

Emily J. Austen & Arthur E. Weis
Flowering is a key life history event whose timing almost certainly affects both male and female fitness, but tests of selection on flowering time through male fitness are few. Such selection may arise from direct effects of flowering time, and indirect effects through covariance between flowering time and the environment experienced during reproduction. To isolate these intrinsically correlated associations, we staggered planting dates of Brassica rapa families with known flowering times, creating populations in which...

Data from: The REporting of studies Conducted using Observational Routinely-collected health Data (RECORD) statement: methods for arriving at consensus and developing reporting guidelines

Stuart G. Nicholls, Pauline Quach, Erik Von Elm, Astrid Guttmann, David Moher, Irene Petersen, Henrik T. Sørensen, Liam Smeeth, Sinéad M. Langan & Eric I. Benchimol
Objective: Routinely collected health data, collected for administrative and clinical purposes, without specific a priori research questions, are increasingly used for observational, comparative effectiveness, health services research, and clinical trials. The rapid evolution and availability of routinely collected data for research has brought to light specific issues not addressed by existing reporting guidelines. The aim of the present project was to determine the priorities of stakeholders in order to guide the development of the REporting...

Data from: Reproductive character displacement of female mate preferences for male cuticular hydrocarbons in Drosophila subquinaria

Howard D. Rundle & Kelly A. Dyer
Several lines of evidence implicate sexual isolation in both initiating and completing the speciation process. While its existence is straightforward to demonstrate, understanding the evolution of sexual isolation requires identifying the underlying phenotypes responsible so that we can determine how these have diverged. Here we study geographic variation in female mate preferences for male sexual displays in the fly Drosophila subquinaria. Female D. subquinaria that are sympatric with its sister species D. recens discriminate strongly...

Data from: Genomic evidence that sexual selection impedes adaptation to a novel environment

Stephen F. Chenoweth, Nicolas C. Appleton, Scott L. Allen & Howard D. Rundle
Sexual selection is widely appreciated for generating remarkable phenotypic diversity, but its contribution to adaptation and the purging of deleterious mutations is unresolved. To provide insight into the impact of sexual selection on naturally segregating polymorphisms across the genome, we previously evolved 12 populations of Drosophila serrata in a novel environment employing a factorial manipulation of the opportunities for natural and sexual selection. Here, we genotype more than 1,400 SNPs in the evolved populations and...

Data from: Association of rule of law and health outcomes: an ecological study

Angela María Pinzón-Rondón, Amir Attaran, Juan Carlos Botero & Angela María Ruiz-Sternberg
Objectives: To explore whether the rule of law is a foundational determinant of health that underlies other socioeconomic, political and cultural factors that have been associated with health outcomes. Setting: Global project. Participants: Data set of 96 countries, comprising 91% of the global population. Primary and secondary outcome measures: The following health indicators, infant mortality rate, maternal mortality rate, life expectancy, and cardiovascular disease and diabetes mortality rate, were included to explore their association with...

Registration Year

  • 2015
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  • Dataset
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Affiliations

  • University of Ottawa
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  • University of Toronto
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  • Helmholtz Centre for Environmental Research
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  • London School of Hygiene & Tropical Medicine
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  • University of Queensland
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  • University of Georgia
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  • Del Rosario University
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  • University of Vermont
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  • University of Lausanne
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  • Aarhus University
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