65 Works

Data from: Many places called home: the adaptive value of seasonal adjustments in range fidelity

Alexandre Lafontaine, Pierre Drapeau, Daniel Fortin & Martin-Hugues St-Laurent
1. The vast majority of animal species display range fidelity, a space-use behaviour enhancing familiarity with local habitat features. While the fitness benefits of this behaviour have been demonstrated in a variety of taxa, some species or populations rather display infidelity, displacing their home range over time. Others, such as many ungulate species, show seasonal adjustments in their range fidelity to accommodate changes in the dominance of limiting factors or in the distribution of resources....

Data from: Impacts of human disturbance on large prey species: do behavioral reactions translate to fitness consequences?

Mathieu Leblond, Christian Dussault & Jean-Pierre Ouellet
Anthropogenic disturbances have been demonstrated to affect animal behavior, distribution, and abundance, but assessment of their impacts on fitness-related traits has received little attention. We hypothesized that human activities and infrastructure cause a decrease in the individual performance of preys because of anthropogenically enhanced predation risk. We evaluated the impacts of commercial logging and road networks on the fitness of a large herbivore known to be sensitive to human disturbance: the forest-dwelling woodland caribou (Rangifer...

Data from: Evolutionary implications of mitochondrial genetic variation: Mitochondrial genetic effects on OXPHOS respiration and mitochondrial quantity change with age and sex in fruit flies

Jonci N. Wolff, Nicolas Pichaud, Maria F. Camus, Geneviève Côté, Pierre U. Blier & Damian K. Dowling
The ancient acquisition of the mitochondrion into the ancestor of modern-day eukaryotes is thought to have been pivotal in facilitating the evolution of complex life. Mitochondria retain their own diminutive genome, with mitochondrial genes encoding core subunits involved in oxidative phosphorylation. Traditionally, it was assumed that there was little scope for genetic variation to accumulate and be maintained within the mitochondrial genome. However, in the past decade, mitochondrial genetic variation has been routinely tied to...

Personality-specific carry-over effects on breeding

Steph Harris, Stephanie M Harris, Sebastien Descamps, Lynne Sneddon, Milena Cairo, Philip Bertrand & Samantha Patrick
Carry-over effects describe the phenomenon whereby an animal’s previous conditions influence its subsequent performance. Carry-over effects are unlikely to affect individuals uniformly, but the factors modulating their strength are poorly known. Variation in the strength of carry-over effects may reflect individual differences in pace-of-life: slow-paced, shyly behaved individuals are thought to favour allocation to self-maintenance over current reproduction, compared to their fast-paced, boldly behaved conspecifics (the pace-of-life syndrome hypothesis). Therefore, detectable carry-over effects on breeding...

Muscle fiber size, myonuclear domain, and fat mass phenotypes in pre-migratory snow buntings

François Vézina, Ryan O'Connor, Audrey Le Pogam, Aliyah De Jesus, Oliver Love & Ana Jimenez
In long-distance migrants, preparation for migration is typically associated with increases in fat and body mass, and with an enlargement of pectoralis muscle mass that likely improves flight performance. Although changes in muscle mass or size have been well described in migratory birds, potential changes in muscle ultrastructure during this transition still deserves scrutiny. Using outdoor captive snow buntings (Plectrophenax nivalis n = 15) measured during their transition into a spring migratory phenotype as a...

Coping with the worst of both worlds: phenotypic adjustments for cold acclimatization benefit northward migration and arrival in the cold in an Arctic breeding songbird

Audrey Le Pogam, Ryan S. O'Connor, Oliver P. Love, Magali Petit, Lyette Régimbald & François Vézina
Cold acclimatization (phenotypic adjustments to cope with cold conditions) is an imperative requirement for birds living at high latitudes during the cold depths of winter. Despite the significant remodelling of key phenotypic traits and energetic costs associated with elevating cold endurance, winter cold acclimatization can also provide further carryover benefits to subsequent stages in species wintering, migrating and breeding in cold environments (e.g., the Arctic). We tested this beneficial carryover hypothesis using outdoor captive Arctic-breeding...

RADseq data for Atlantic Halibut in the Northwest Atlantic

Tony Kess, Anthony Einfeldt, Brendan Wringe, Sarah Lehnert, Kara Layton, Meghan McBride, Dominique Robert, Jonathan Fisher, Arnault Le Bris, Cornelia Den Heyer, Nancy Shackell, Daniel Ruzzante, Paul Bentzen & Ian Bradbury
Characterizing the nature of genetic differentiation among individuals and populations and its distribution across the genome is increasingly important to inform both conservation and management of exploited species. Atlantic Halibut (Hippoglossus hippoglossus) is an ecologically and commercially important fish species, yet knowledge of population structure and genomic diversity in this species remains lacking. Here, we use restriction-site associated DNA sequencing and a chromosome-level genome assembly to identify over 86,000 single nucleotide polymorphisms mapped to 24...

Observations of turbulence and the geometry and circulation of windrows in a small bay in the St. Lawrence Estuary.

Seth Zippel, Ted Maksym, Malcolm E. Scully, Peter Sutherland & Dany Dumont
Measurements of ocean turbulence, waves, and the geometry and circulation of windrows were made over 5 days in early March in a small bay in the St. Lawrence Estuary. Measurements were made from a small zodiac and from a SWIFT drifter. Two acoustic doppler velocity profilers (ADCPs) were used from the zodiac to measure water velocity and turbulent kinetic energy (TKE) dissipation rates near the surface. The acoustic backscatter from the ADCPs was used in...

Data for the article: Trophic niche partitioning between two prey and their incidental predators revealed various threats for an endangered species

Ève Rioux, Fanie Pelletier & Martin-Hugues St-Laurent
Documenting trophic niche partitioning and resource use within a community is critical to evaluate underlying mechanisms of coexistence, competition or predation. Detailed knowledge about foraging is essential as it may influence the vital rates, which, in turn, can affect trophic relationships between species and population dynamics. The aims of this study were to evaluate resource and trophic niche partitioning in summer/autumn between the endangered Atlantic-Gaspésie caribou (Rangifer tarandus caribou) population, moose (Alces americanus) and their...

Snow bunting respirometry data

Ryan O'Connor, Audrey Le Pogam, Kevin Young, Francis Robitaille, Emily Choy, Oliver Love, Kyle Elliott, Anna Hargreaves, Dominique Berteaux, Andrew Tam & François Vézina
1. Arctic animals inhabit some of the coldest environments on the planet and have evolved physiological mechanisms for minimizing heat loss under extreme cold. However, the Arctic is warming faster than the global average and how well Arctic animals tolerate even moderately high air temperatures (Ta) is unknown. 2. Using flow-through respirometry we investigated the heat tolerance and evaporative cooling capacity of snow buntings (Plectrophenax nivalis; ≈ 31g, N = 42), a cold specialist, Arctic...

The predator activity landscape predicts the anti‐predator behavior and distribution of prey in a tundra community

Jeanne Clermont, Alexis Grenier-Potvin, Éliane Duchesne, Charline Couchoux, Frédéric Dulude-De Broin, Andréanne Beardsell, Joël Bêty & Dominique Berteaux
Predation shapes communities through consumptive and non-consumptive effects. In the latter case, prey respond to perceived predation risk through proactive or reactive risk management strategies occurring at different spatial and temporal scales. The predator-prey space race and landscape of fear concepts are useful to better understand how predation risk affects prey behavioral decisions and distribution. We assessed predation-risk effects in a terrestrial Arctic community, where the arctic fox is the main predator of ground-nesting birds....

Données sur les hydrocarbures aromatiques polycycliques dans les sédiments de l'estuaire et du golfe du Saint-Laurent (est du Canada)

Anne Corminboeuf
The St. Lawrence Estuarine System is a major seaway connecting eastern Canada with the Atlantic Ocean. Approximately 4000 vessels travel along this seaway every year that contribute, in addition to industrial activities, to anthropogenic stress in regard to many pollutants, including polycyclic aromatic hydrocarbons (PAHs). In this study, the concentrations of 23 PAHs (16 parent PAHs and 7 alkyl-PAHs), total organic carbon (TOC) as well as grain-size distributions were determined in 45 surface sediment and...

Data from: Movement tactics of a mobile predator in a meta-ecosystem with fluctuating resources: the arctic fox in the High Arctic

Sandra Lai, Joël Bêty & Dominique Berteaux
Animal movement is a fundamental process shaping ecosystems at multiple levels, from the fate of individuals to global patterns of biodiversity. The spatio-temporal dynamic of food resources is a major driver of animal movement and generates patterns ranging from range residency to migration and nomadism. Arctic tundra predators face a strongly fluctuating environment marked by cyclic microtine populations, high seasonality, and the potential availability of sea ice, which gives access to marine resources in winter....

Data from: A spatial theory for characterizing predator–multiprey interactions in heterogeneous landscapes

Daniel Fortin, Pietro-Luciano Buono, Oswald J. Schmitz, Nicolas Courbin, Chrystel Losier, Martin-Hugues St-Laurent, Pierre Drapeau, Sandra Heppell, Claude Dussault, Vincent Brodeur & Julien Mainguy
Trophic interactions in multiprey systems can be largely determined by prey distributions. Yet, classic predator–prey models assume spatially homogeneous interactions between predators and prey. We developed a spatially informed theory that predicts how habitat heterogeneity alters the landscape-scale distribution of mortality risk of prey from predation, and hence the nature of predator interactions in multiprey systems. The theoretical model is a spatially explicit, multiprey functional response in which species-specific advection–diffusion models account for the response...

Data from: Highly overlapping winter diet in two sympatric lemming species revealed by DNA metabarcoding

Eeva M. Soininen, Gilles Gauthier, Frédéric Bilodeau, Dominique Berteaux, Ludovic Gielly, Pierre Taberlet, Galina Gussarova, Eva Bellemain, Kristian Hassel, Hans K. Stenøien, Laura Epp, Audun Schrøder-Nilsen, Christian Brochmann, Nigel G. Yoccoz & Audun Schrøder-Nielsen
Sympatric species are expected to minimize competition by partitioning resources, especially when these are limited. Herbivores inhabiting the High Arctic in winter are a prime example of a situation where food availability is anticipated to be low, and thus reduced diet overlap is expected. We present here the first assessment of diet overlap of high arctic lemmings during winter based on DNA metabarcoding of feces. In contrast to previous analyses based on microhistology, we found...

Data from: The ability of North Island robins to discriminate between humans is related to their behavioural type

Craig A. Barnett, Matt Salter, Clément Chevallier, Nicola Robertson, Otis Berard, Kevin C. Burns & Craig Barnett
Animals are able to learn to identify persistent threats to themselves and their offspring. For example, birds are able to quickly learn to discriminate between humans that have previously threatened their nests from humans with whom they have had no prior experience. However, no study has yet examined whether a bird's ability to discriminate between humans is related to the bird's underlying behavioural type. In this study, we examined whether there were differences among North...

Data from: Exploring genomic variation associated with drought stress in Picea mariana populations

Joseph Napier, Guillaume De Lafontaine & Feng Sheng Hu
Predicted increases in drought and heat stress will likely induce shifts in species bioclimatic envelopes. Genetic variants adapted to water limitation may prove pivotal for species response under scenarios of increasing drought. In this study, we aimed to explore this hypothesis by investigating genetic variation in 16 populations of black spruce (Picea mariana) in relation to climate variables in Alaska. A total of 520 single nucleotide polymorphisms (SNPs) were genotyped for 158 trees sampled from...

Data from: Shells of the bivalve Astarte moerchi give new evidence of a strong pelagic-benthic coupling shift occurring since the late 1970s in the NOW Polynya

Frederic Olivier, Blandine Gaillard, Julien Thébault, Tarik Meziane, Réjean Tremblay, Dany Dumont, Simon Bélanger, Michel Gosselin, Aurélie Jolivet, Laurent Chauvaud, André L. Martel, Søren Rysgaard, Anne-Hélène Olivier, Julien Pettré, Jérôme Mars, Silvain Gerber & Philippe Archambault
Climate changes in the Arctic may weaken the currently tight pelagic-benthic coupling. In response to decreasing sea ice cover, arctic marine systems are expected to shift from a ‘sea-ice algae-benthos’ to a ‘phytoplankton-zooplankton’ dominance. We used mollusk shells as bioarchives and fatty acid trophic markers to estimate the effects of the reduction of sea ice cover on the exported food to the seafloor. Bathyal bivalve Astarte moerchi that lives at 600 m depth in northern...

Merging indigenous and scientific knowledge links climate with the growth of a large migratory caribou population

Catherine A. Gagnon, Sandra Hamel, Don E. Russell, Todd Powell, James Andre, Michael Y. Svoboda & Dominique Berteaux
1. Climate change in the Arctic is two to three times faster than anywhere else in the world. It is therefore crucial to understand the effects of weather on keystone arctic species, particularly those such as caribou (Rangifer tarandus) that sustain northern communities. Bridging long-term scientific and indigenous knowledge offers a promising path to achieve this goal, as both types of knowledge may complement one another. 2. We assessed the influence of environmental variables on...

Data from: Contrasted patterns of local adaptation to climate change across the range of an evergreen oak, Quercus aquifolioides

Fang Du, Tianrui Wang, Yuyao Wang, Saneyoshi Ueno & Guillaume De Lafontaine
Long-lived tree species are genetically differentiated and locally adapted with respect to fitness-related traits, but the genetic basis of local adaptation remains largely unresolved. Recent advances in population genetics and landscape genomic analyses enable identification of putative adaptive loci and specific selective pressures acting on local adaptation. Here we sampled 60 evergreen oak (Quercus aquifolioides) populations throughout the species’ range and pool-sequenced 587 individuals at drought stress candidate genes. We analyzed patterns of genetic diversity...

Atlas des paysages acoustiques océaniques

L’Atlas des paysages acoustiques océaniques est un outil interactif en ligne permettant de visualiser des cartes des différentes composantes des paysages acoustiques océaniques : géophonie (sons d’origine géophysique telle que les vents et les vagues), biophonie (sons émis par les espèces animales telles que les baleines) et anthropophonie (sons provenant des activités humaines telles que le trafic maritime). Cette application permet de parcourir, dans l’espace 3D et le temps, les interactions entre les composantes acoustiques...

Data for: Parasitoids indicate major climate-induced shifts in Arctic communities

Tuomas Kankaanpää, Eero Vesterinen, Bess Hardwick, Niels Martin Martin Schmidt, Tommi Andersson, Paul Eric Aspholm, Isabel Barrio, Niklas Beckers, Joël Bêty, Tone Birkemoe, Melissa DeSiervo, Katherine Drotos, Dorothee Ehrich, Olivier Gilg, Vladimir Gilg, Nils Hein, Toke Høye, Kristian Jakobsen, Camille Jodouin, Jesse Jorna, Mikhail Kozlov, Jean-Claude Kresse, Don-Jean Leandri-Breton, Nicolas Lecomte, Maia Olsen … & Tomas Roslin
Climatic impacts are especially pronounced in the Arctic, which as a region is warming twice as fast as the rest of the globe. Here, we investigate how mean climatic conditions and rates of climatic change impact parasitoid insect communities in 16 localities across the Arctic. We focus on parasitoids in a wide-spread habitat, Dryas heathlands, and describe parasitoid community composition in terms of larval host use (i.e. parasitoid use of herbivorous Lepidoptera versus pollinating Diptera)...

Data from: Universal metabolic constraints shape the evolutionary ecology of diving in animals

Wilco Verberk, Piero Calosi, Francois Brischoux, John Spicer, Theodore Garland & David Bilton
Diving as a lifestyle has evolved on multiple occasions when air-breathing terrestrial animals invaded the aquatic realm, and diving performance shapes the ecology and behaviour of all air-breathing aquatic taxa, from small insects to great whales. Using the largest dataset yet assembled, we show that maximum dive duration increases predictably with body mass in both ectotherms and endotherms. Compared to endotherms, ectotherms can remain submerged for longer, but the mass scaling relationship for dive duration...

Data from: Evaluation of Argos telemetry accuracy in the High-Arctic and implications for the estimation of home-range size

Sylvain Christin, Martin-Hugues St-Laurent & Dominique Berteaux
Animal tracking through Argos satellite telemetry has enormous potential to test hypotheses in animal behavior, evolutionary ecology, or conservation biology. Yet the applicability of this technique cannot be fully assessed because no clear picture exists as to the conditions influencing the accuracy of Argos locations. Latitude, type of environment, and transmitter movement are among the main candidate factors affecting accuracy. A posteriori data filtering can remove “bad” locations, but again testing is still needed to...

Data from: Disentangling woodland caribou movements in response to clearcuts and roads across temporal scales

David Beauchesne, Jochen A. G. Jaeger, Martin-Hugues St-Laurent & Jochen AG. Jaeger
Although prey species typically respond to the most limiting factors at coarse spatiotemporal scales while addressing biological requirements at finer scales, such behaviour may become challenging for species inhabiting human altered landscapes. We investigated how woodland caribou, a threatened species inhabiting North-American boreal forests, modified their fine-scale movements when confronted with forest management features (i.e. clearcuts and roads). We used GPS telemetry data collected between 2004 and 2010 on 49 female caribou in a managed...

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  • Université du Québec à Rimouski
  • Université Laval
  • University of Windsor
  • Université de Sherbrooke
  • Environment Canada
  • University of Quebec at Montreal
  • The Arctic University of Norway
  • University of Alaska Fairbanks
  • McGill University
  • French National Centre for Scientific Research