Geneviève Labrie - Academia.edu (original) (raw)

Papers by Geneviève Labrie

Research paper thumbnail of The Multicoloured Asian Ladybeetle: Beneficial or Nuisance Organism?

Research paper thumbnail of Le ver-gris occidental des haricots, un nouveau venu au Québec

Research paper thumbnail of Soares, A.O., Borges, I., Borges, P.A.V., Labrie, G. & Lucas. E. (2008). Harmonia axyridis; What will stop the invader? BioControl, 53: 127-145. DOI: 10.1007/s10526-007-9141

Research paper thumbnail of Increased Acetylcholinesterase Expression in Bumble Bees During Neonicotinoid-Coated Corn Sowing

Scientific reports, 2015

While honey bee exposure to systemic insecticides has received much attention, impacts on wild po... more While honey bee exposure to systemic insecticides has received much attention, impacts on wild pollinators have not been as widely studied. Neonicotinoids have been shown to increase acetylcholinesterase (AChE) activity in honey bees at sublethal doses. High AChE levels may therefore act as a biomarker of exposure to neonicotinoids. This two-year study focused on establishing whether bumble bees living and foraging in agricultural areas using neonicotinoid crop protection show early biochemical signs of intoxication. Bumble bee colonies (Bombus impatiens) were placed in two different agricultural cropping areas: 1) control (≥3 km from fields planted with neonicotinoid-treated seeds) or 2) exposed (within 500 m of fields planted with neonicotinoid-treated seeds), and maintained for the duration of corn sowing. As determined by Real Time qPCR, AChE mRNA expression was initially significantly higher in bumble bees from exposed sites, then decreased throughout the planting season to rea...

Research paper thumbnail of Natural enemies of pollen beetle Brassicogethes viridescens (Coleoptera: Nitidulidae) in Québec and Ontario

Research paper thumbnail of A new species of Platygaster (Hymenoptera: Platygastridae) from Canada associated with wheat

Research paper thumbnail of Gregarious pupation act as a defensive mechanism against cannibalism and intraguild predation

Research paper thumbnail of Neonicotinoid-Contaminated Puddles of Water Represent a Risk of Intoxication for Honey Bees

Research paper thumbnail of The multicolored Asian ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae) in Quebec agroecosystems ten years after its arrival

European Journal of Entomology, 2007

Research paper thumbnail of Abundance and Developmental Stability of <I>Pterostichus melanarius</I> (Coleoptera: Carabidae) in Organic and Integrated Pest Management Orchards of Québec, Canada

Environmental Entomology, 2003

ABSTRACT

Research paper thumbnail of Can Developmental and Behavioral Characteristics of the Multicolored Asian Lady Beetle Harmonia Axyridis Explain its Invasive Success?

Biological Invasions, 2006

Research paper thumbnail of Overwintering Strategy of Multicolored Asian Lady Beetle (Coleoptera: Coccinellidae): Cold-Free Space As a Factor of Invasive Success

Annals of the Entomological Society of America, 2008

Research paper thumbnail of Harmonia axyridis: What will stop the invader?

Research paper thumbnail of The Multicoloured Asian Ladybeetle: Beneficial or Nuisance Organism?

Research paper thumbnail of Le ver-gris occidental des haricots, un nouveau venu au Québec

Research paper thumbnail of Soares, A.O., Borges, I., Borges, P.A.V., Labrie, G. & Lucas. E. (2008). Harmonia axyridis; What will stop the invader? BioControl, 53: 127-145. DOI: 10.1007/s10526-007-9141

Research paper thumbnail of Increased Acetylcholinesterase Expression in Bumble Bees During Neonicotinoid-Coated Corn Sowing

Scientific reports, 2015

While honey bee exposure to systemic insecticides has received much attention, impacts on wild po... more While honey bee exposure to systemic insecticides has received much attention, impacts on wild pollinators have not been as widely studied. Neonicotinoids have been shown to increase acetylcholinesterase (AChE) activity in honey bees at sublethal doses. High AChE levels may therefore act as a biomarker of exposure to neonicotinoids. This two-year study focused on establishing whether bumble bees living and foraging in agricultural areas using neonicotinoid crop protection show early biochemical signs of intoxication. Bumble bee colonies (Bombus impatiens) were placed in two different agricultural cropping areas: 1) control (≥3 km from fields planted with neonicotinoid-treated seeds) or 2) exposed (within 500 m of fields planted with neonicotinoid-treated seeds), and maintained for the duration of corn sowing. As determined by Real Time qPCR, AChE mRNA expression was initially significantly higher in bumble bees from exposed sites, then decreased throughout the planting season to rea...

Research paper thumbnail of Natural enemies of pollen beetle Brassicogethes viridescens (Coleoptera: Nitidulidae) in Québec and Ontario

Research paper thumbnail of A new species of Platygaster (Hymenoptera: Platygastridae) from Canada associated with wheat

Research paper thumbnail of Gregarious pupation act as a defensive mechanism against cannibalism and intraguild predation

Research paper thumbnail of Neonicotinoid-Contaminated Puddles of Water Represent a Risk of Intoxication for Honey Bees

Research paper thumbnail of The multicolored Asian ladybeetle Harmonia axyridis (Coleoptera: Coccinellidae) in Quebec agroecosystems ten years after its arrival

European Journal of Entomology, 2007

Research paper thumbnail of Abundance and Developmental Stability of <I>Pterostichus melanarius</I> (Coleoptera: Carabidae) in Organic and Integrated Pest Management Orchards of Québec, Canada

Environmental Entomology, 2003

ABSTRACT

Research paper thumbnail of Can Developmental and Behavioral Characteristics of the Multicolored Asian Lady Beetle Harmonia Axyridis Explain its Invasive Success?

Biological Invasions, 2006

Research paper thumbnail of Overwintering Strategy of Multicolored Asian Lady Beetle (Coleoptera: Coccinellidae): Cold-Free Space As a Factor of Invasive Success

Annals of the Entomological Society of America, 2008

Research paper thumbnail of Harmonia axyridis: What will stop the invader?