A5085515231- Fish Ecology and Management Studies
- Marine and fisheries research
- Isotope Analysis in Ecology
- Environmental DNA in Biodiversity Studies
- Aquatic Invertebrate Ecology and Behavior
- Marine Bivalve and Aquaculture Studies
- Genetic diversity and population structure
- Wildlife Ecology and Conservation
- Fish Biology and Ecology Studies
- Identification and Quantification in Food
- Microbial Community Ecology and Physiology
- Ecology and biodiversity studies
- Hydrology and Sediment Transport Processes
- Ichthyology and Marine Biology
- Aquaculture Nutrition and Growth
- Aquatic Ecosystems and Phytoplankton Dynamics
- Species Distribution and Climate Change
- Paleontology and Stratigraphy of Fossils
- Geographies of human-animal interactions
- Genomics and Phylogenetic Studies
- Protist diversity and phylogeny
- Marine animal studies overview
- Coastal wetland ecosystem dynamics
- Soil erosion and sediment transport
- Geochemistry and Elemental Analysis
Université du Québec à Chicoutimi
2015-2025
Ministère des Ressources naturelles et des Forêts
2018-2024
Université Laval
2018-2020
Université du Québec
2018
Protection of freshwater fish diversity is a global conservation priority in face its alarming decline the last decades. A crucial step to protect production prompt and precise evaluation community composition spatial distribution. Metabarcoding environmental DNA (eDNA metabarcoding) generally surpasses traditional methods for documenting aquatic environments. Nevertheless, empirical evidence evaluating how eDNA transportation water affect structure via metabarcoding data remains scarce....
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Abstract Water temperature is key to the study of aquatic ectotherm ecology, but precise measurements individual‐based thermal experience remain difficult validate. The stable isotope composition oxygen in biominerals acts as a natural thermometer due dependence isotopic fractionation between water and mineral phases. Coefficients published temperature‐dependent equations, however, vary among taxa (the so‐called ‘vital effect’) without apparent consistent predictors, implying that...
Biodiversity loss has accelerated over the past century and freshwater species overall are among those experiencing greatest declines. Genetic resources have potential to help evaluate full magnitude of this represent a key tool effectively allocate conservation monitor success restoration efforts. The power genetic will be realized when daunting task referencing all DNA sequences organisms is complete. Here, we quantified availability distribution barcode genome data for macroscopic in...
Biological invasions and human migrations have increased globally due to socio-economic drivers environmental factors that enhanced cultural, economic, geographic connectivity. Both processes involve the movement, establishment, spread of species, yet unfold within fundamentally different philosophical, social biological contexts. Hence, studying (invasion science) migration (migration studies) presents complex parallels are potentially fruitful explore. Here, we examined nuanced differences...
Abstract Successfully implementing fundamental concepts into concrete applications is challenging in any given field. It requires communication, collaboration and shared will between researchers practitioners. We argue that evolutionary biology, through research work linked to conservation, management forensics, had a significant impact on wildlife agencies department practices, where new frameworks have been implemented over the last decades. The Quebec government's Wildlife Department...
The effectiveness of marine conservation areas are influenced by the structure food webs they encompass, including population dynamics potentially important forage species that occupy trophic positions between those zooplankton and higher levels. Capelin is a key for mammals, seabirds, fish in Saguenay-St. Lawrence Marine Park (SSLMP, Canada), yet knowledge on its incomplete. In particular, natal sources sustaining this critical within area remain unknown. Otolith microchemistry as an index...
The study of distribution and dispersal invasive fishes is challenging during the early stages invasion. Quantification trace elements incorporated into fish hard parts represents an innovative technique for this task. Otolith chemistry has been used to describe stock structure, migratory behaviour support management several species. We otolith population structure tench (Tinca tinca), invader in St. Lawrence River. Tench movements throughout invaded portion system were reconstructed using a...
Introduced and geographically expanding populations experience similar eco-evolutionary challenges, including founder events, genetic bottlenecks, novel environments. Theory predicts that reduced diversity resulting from such phenomena limits the success of introduced populations. Using 1900 SNPs obtained restriction-site-associated DNA sequencing, we evaluated hypotheses related to invasion history connectivity an invasive population Tench (Tinca tinca), a Eurasian freshwater fish has been...
Supplementation stocking is a commonly used management tool to sustain exploited fish populations. Possible negative consequences of supplementation on local stocks are concern for the conservation wild However, direct impacts life history traits populations have rarely been investigated. In addition, intraspecific hybridization between contrasting ecotypes (planktivorous and piscivorous) has seldom considered in plans. Here, we combined genetic (genotype-by-sequencing analysis) document...
Introductions of exotic invasive species are a global disturbance for natural habitats. The severity invasions can greatly vary from local to scales, as observed in invasion refuges, which exhibit lower-than-expected intensity. In this study, we analyzed the effects water conductivity and wetland presence on density round goby ( Neogobius melanostomus) large-scale study (>1300 sites), spanning 400 km stretch St. Lawrence River (Canada). Our results showed that was null sites with under...
Greenland Halibut ( Reinhardtius hippoglossoides ) is a deepwater flatfish having circumpolar distribution. Understanding the spatial connectivity and migratory patterns of this commercially valuable species essential for ensuring sustainable fishery; nonetheless, information remains relatively scarce many populations. Here we evaluate population structure halibut along coastal Canada to better characterize contribution each production zone various stocks found in northwestern Atlantic...
Worldwide, stocking of fish represents a valuable tool for conservation and maintenance species exploited by recreational fishing. Releases hatchery-reared are more recognized to have numerous demographic, ecological, genetic impacts on wild populations. However, consequences intraspecific trophic relationships rarely been investigated. In this study, we assessed the supplementation resulting introgressive hybridization niches occupied stocked, local, hybrid lake trout (Salvelinus namaycush)...
Abstract The selection of thermal habitat by fish is strongly regulated physiology and behaviour. However, delineation a species lifelong niche remains technically challenging. Lake trout ( Salvelinus namaycush ) survival productivity are recognised as being tightly linked to somewhat restricted habitat. factors guiding temperature during each life stage remain poorly understood. In this study, we tested the significant controlling realised lake from two southern Quebec small boreal lakes...
We report the first records for Eurasian zooplankton species Thermocyclops crassus (Fischer, 1853) (Copepoda, Cyclopoida) from two freshwater sites in eastern Canada collected between 2020 and 2022.Thermocyclops were found at high densities (between 8 × 10 3 2 5 adults/m ) Lake St. Pierre on Lawrence River, Québec, but very low 0.3 0.7 Wentzell's LaHave River system, Nova Scotia.We discuss possible introduction pathways both as well need enhanced biosurveillance increased public education Canada.
The physicochemical heterogeneity of large river ecosystems generates a mosaic habitats that support diverse fish communities. Understanding the connectivity between and exploited populations is necessary for sustainable management fisheries. This study evaluates spatial concordance elemental fingerprints otoliths surface waters in St. Lawrence River (Canada) its tributaries. We sampled 16 tributaries various freshwater collected 136 water samples 930 fish, representing 21 species. observed...
Abstract The case of the deepwater redfish ( Sebastes mentella ) in Gulf St. Lawrence (GSL) is a compelling example drastic fluctuations annual recruitment strength, characteristic spasmodic stocks. After three decades low abundance, emergence consecutive strong year classes 2011–2013 resulted an unprecedented increase biomass. In stocks such as GSL redfish, sustain both biomass and catch for decades. Therefore, understanding growth dynamics these cohorts essential. present study, we...
En 1991, la tanche ( Tinca tinca Linné, 1758) a été relâchée illégalement dans les eaux de rivière Richelieu. Après s’être répandue l’ensemble cette rivière, ce poisson colonisé le fleuve Saint-Laurent et lac Champlain. La présente étude analyse par cartographie l’évolution spatio-temporelle sa dispersion depuis son introduction en quantifiant notamment patrons taux à partir des données d’occurrences 1999 2020. Les résultats démontrent une saturation spatiale observée l’échelle du corridor...
Models are needed to predict changes in game fish abundances with respect climatic factors undergoing change, but such models often limited by data availability and the capacity of statistical methods fit challenging ecological datasets. We use current machine learning describe responses 10 species across Québec. assembled a new province-wide, synthetic dataset catches spanning almost 50 years 6000 sites. Extreme Gradient Boosting (XGBoost) revealed that more important predictors trends than...
La production du maïs à ensilage dans la région Saguenay–Lac-Saint-Jean (SLSJ) est limitée en raison faible nombre d’unités thermiques (UTM). Pour pallier cette contrainte, plusieurs producteurs utilisent un film de plastique translucide dit « oxo-biodégradable », permettant ainsi devancer date semis et bénéficier d’hybrides plus élevés UTM. Toutefois, l’utilisation ce type pourrait causer des problèmes importants s’accumulant notamment les sols, sédiments, eaux organismes vivants. À jour,...