François Dumont

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Coccinellid pupae use an array of defensive strategies against their natural enemies. This study aims to assess the efficiency of gregarious pupation as a defensive mechanism against intraguild predators and cannibals in coccinellid. The study was designed specifically (i) to determine the natural occurrence of gregarious pupation in the field for different(More)
In zoophytophagous predators genetically determined efficiency to exploit either animal or plant resources could lead to diet specialization, and a trade-off between fitness performances on animal and plant diet. Such a trade-off would have important consequences on the efficiency of zoophytophagous species as biocontrol agents. We estimated the genetic(More)
Protection from predators is a recognized benefit of group living for animals. The selfish herd effect implies that individuals in a central position within the group suffer lower predation than individuals at the edges of the group. The midge, Aphidoletes aphidimyza, is a furtive predator that lives within aphid colonies where it benefits from a dilution(More)
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