Jonathan Verreault
Université du Québec à Montréal
Environmental chemistryChemistryLarusGlaucous gullBiology
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Publications 59
#2Magella Pelletier (McGill University)H-Index: 1
Last. Mélanie DesrosiersH-Index: 13
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Abstract Introduction of invasive species can have a profound impact on food web structure and therefore on trophic transfer of contaminants. In the St. Lawrence River (Canada), 20 years after its first detection in the system, invasive round goby (Neogobius melanostomus) has become the main prey for several piscivorous species. To evaluate the accumulation, trophic transfer, and the ecological risk of polybrominated diphenyl ethers (PBDEs) in this recently modified freshwater food web, samples ...
Abstract The endangered beluga (Delphinapterus leucas) population residing in the St. Lawrence Estuary (SLE; Eastern Canada) is declining. The elevated tissue concentrations of a wide range of organohalogen contaminants might play a role in the non-recovery of this whale population. Organohalogens have been reported to impair the regulation of several metabolic products from cellular reactions in mammals such as amino acids and fatty acids. The objective of this study was to investigate a suite ...
#1Clara Thaysen (U of T: University of Toronto)H-Index: 2
#2Manon Sorais (UQAM: Université du Québec à Montréal)H-Index: 2
Last. Chelsea M. Rochman (U of T: University of Toronto)H-Index: 19
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Abstract The hypothesis that plastics can transfer chemical pollutants to organisms after ingestion has been supported by several lab and field studies. However, models indicate that this transfer could be bidirectional and that whether chemicals move from plastics to the animal or vice versa, depends on several factors, including the relative concentrations of chemicals in both the animal and the plastics ingested. To explore this phenomenon in the field, we examined the relative concentrations...
#1Louise ChampouxH-Index: 16
#2Jean-François Rail (CWS: Canadian Wildlife Service)H-Index: 12
Last. Magella Guillemette (Université du Québec à Rimouski)H-Index: 15
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Abstract Exposure to oil can have long-term impacts on migratory birds. Following the 2010 Deepwater Horizon blowout in the Gulf of Mexico (GOM), we investigated potential impacts of oil exposure on a population of northern gannets (Morus bassanus) that breed on Bonaventure Island (Quebec, Canada) and winter in GOM and along the U.S. Atlantic coast (AC). Blood and feather samples were collected from adults previously equipped with geolocators to determine wintering locations. Parent and alkylate...
1 CitationsSource
#1Aroha MillerH-Index: 5
#2John E. ElliottH-Index: 40
Last. Abde IdrissiH-Index: 4
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Abstract Assessing the fate of both legacy and newer persistent organic pollutants (POPs) is an ongoing challenge. Top predators, including seabirds, are effective monitors of POPs because they forage over a range of marine habitats, integrating signals over space and time. However, migration patterns can make unravelling contaminant sources, and potentially assessments of the effectiveness of regulations, challenging if chemicals are acquired at distant sites. In 2014, we fitted geolocators on ...
1 CitationsSource
#1Sarah C. Marteinson (UQAM: Université du Québec à Montréal)H-Index: 3
#2Jonathan Verreault (UQAM: Université du Québec à Montréal)H-Index: 21
Abstract Gulls (Larids) have become successful at exploiting anthropogenic areas for foraging. However, little is known on the health implications of using anthropogenic habitats and on the associated exposure to environmental contaminants, particularly with respect to plasma biochemistry that is routinely used to diagnose physiological disorders and diseases. The objective of the present study was to investigate the effects of anthropogenic habitat use and exposure to ubiquitous halogenated fla...
#1Manon Sorais (UQAM: Université du Québec à Montréal)H-Index: 2
#2Marc J. Mazerolle (Laval University)H-Index: 18
Last. Jonathan Verreault (UQAM: Université du Québec à Montréal)H-Index: 21
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Abstract Halogenated flame retardants (HFRs) are contaminants that are abundantly emitted from waste management facilities (WMFs) and that became ubiquitous in air of urbanized regions. Urban birds including gulls have adapted to exploiting human food resources (refuse) in WMFs, and have thus experienced population explosions worldwide. However, foraging in WMFs for birds may result in exposure to HFRs that have been shown to be toxic for animals. The objective of this study was to determine the...
2 CitationsSource
#1Christine Dépatie (UQAM: Université du Québec à Montréal)
#2Magali Houde (McGill University)H-Index: 4
Last. Jonathan Verreault (UQAM: Université du Québec à Montréal)H-Index: 21
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Abstract Lipids play important roles in growth, reproduction, locomotion, and migration of fish. Municipal effluents, which are complex mixtures of biological and chemical compounds including flame retardants, have been shown to alter lipid metabletabolism in environmentally and experimentally exposed fish. Down-regulation of several genes coding for fatty acid metabolism enzymes has previously been reported in male northern pike (Esox lucius) collected in the St. Lawrence River (QC, Canada) dow...
#1Lei Tian (McGill University)H-Index: 4
#2Jonathan Verreault (UQAM: Université du Québec à Montréal)H-Index: 21
Last. Stéphane Bayen (McGill University)H-Index: 17
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Abstract Environmental contaminant monitoring traditionally relies on targeted analysis, and very few tools are currently available to monitor “unexpected” or “unknown” compounds. In the present study, a non-targeted workflow (suspect screening) was developed to investigate plastic-related chemicals and other environmental contaminants in a top predator freshwater fish species, the northern pike, from the St. Lawrence River, Canada. Samples were extracted using sonication-assisted liquid extract...
#1Antoine E. Simond (UQAM: Université du Québec à Montréal)H-Index: 1
#2Magali Houde (McGill University)H-Index: 4
Last. Jonathan Verreault (UQAM: Université du Québec à Montréal)H-Index: 21
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Abstract Elevated concentrations of persistent organic pollutants (POPs) and emerging halogenated flame retardants (HFRs) have been reported in tissues of the endangered St. Lawrence Estuary (Canada) beluga population as well as in minke whales visiting that same feeding area. This study examined the linkages between blubber concentrations of POPs and emerging HFRs, and transcription in skin of genes involved in the regulation of thyroid and steroid axes in belugas and minke whales from the St. ...