Bertrand Gauffre

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Dispersal is a fundamental process in ecology because it influences the dynamics, genetic structure and persistence of populations. Furthermore, understanding the evolutionary causes of dispersal pattern, particularly when they differ between genders, is still a major question in evolutionary ecology. Using a panel of 10 microsatellite loci, we investigated(More)
Hantaviruses are among the main emerging infectious agents in Europe. Their mode of transmission in natura is still not well known. In particular, social features and behaviours could be crucial for understanding the persistence and the spread of hantaviruses in rodent populations. Here, we investigated the importance of kinclustering and dispersal in(More)
In highly fluctuating populations with complex social systems, genetic patterns are likely to vary in space and time due to demographic and behavioural processes. Cyclic rodents are extreme examples of demographically instable populations that often exhibit strong social organization. In such populations, kin structure and spacing behaviour may vary with(More)
Cyclic rodent population dynamics are subjected to both intrinsic regulatory processes such as density-dependence and extrinsic environmental forcing. Among extrinsic factors, seasonal environmental variation is understood to facilitate cycles. In rodents, these processes have been studied mostly independently and their relative importance for population(More)
26 Understanding how host dynamics, including spatiotemporal variations of population size and 27 dispersal, may affect the epidemiology of infectious diseases is an active research area. 28 Population dynamics drive neutral and adaptive micro-evolutionary processes that in turn, 29 influence pathogens persistence, their distribution and evolution. This(More)
1 Understanding how host dynamics, including variations of population size and dispersal, may affect 2 the epidemiology of infectious diseases through ecological and evolutionary processes is an active 3 research area. Here we focus on a bank vole (Myodes glareolus) metapopulation surveyed in 4 Finland between 2005 and 2009. Bank vole is the reservoir of(More)
Common voles in western France exhibit three-year population cycles with winter crashes after large outbreaks. During the winter of 2011–2012, we monitored survival, reproduction, recruitment and population growth rate of common voles at different densities (from low to outbreak densities) in natura to better understand density dependence of demographic(More)
26 Understanding how host dynamics, including spatiotemporal variations of population size and 27 dispersal, may affect the epidemiology of infectious diseases is an active research area. 28 Population dynamics drive neutral and adaptive micro-evolutionary processes that in turn, 29 influence pathogens persistence, their distribution and evolution. This(More)
Ecological control has often focused on factors enhancing control of pests by their natural enemies, while factors reducing the colonization rate of crops by pests have been comparatively neglected. We present an approach to assess landscape influence on the intensity of wheat colonization by a major crop pest, the aphid Rhopalosiphum padi. We used trays(More)
Winter ecology of natural enemies has a great influence on the level and efficiency of biological control at spring. The hoverfly Episyrphus balteatus (DeGeer) (Diptera: Syrphidae) is one of the most important natural predators of crop aphids in Europe. Three different overwintering strategies coexist in this species which makes it a good model in order to(More)
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