Search Results - "Desouhant, E."

The invasive pest Drosophila suzukii uses trans-generational medication to resist parasitoid attack by Poyet, M., Eslin, P., Chabrerie, O., Prud’homme, S. M., Desouhant, E., Gibert, P.

“…Animal medication is a behavioral strategy to resist enemies based on the use of substances from the environment. While it has been observed in several…”
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Host and food searching in a parasitic wasp Venturia canescens: a trade-off between current and future reproduction? by Desouhant, E., Driessen, G., Amat, I., Bernstein, C.

“…Whether to invest in current or future reproduction is an important trade-off in life history evolution. For insect parasitoids, this trade-off is determined,…”
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Influence of oxidative homeostasis on bacterial density and cost of infection in Drosophila–Wolbachia symbioses by Monnin, D., Kremer, N., Berny, C., Henri, H., Dumet, A., Voituron, Y., Desouhant, E., Vavre, F.

“…The evolution of symbioses along the continuum between parasitism and mutualism can be influenced by the oxidative homeostasis, that is the balance between…”
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influence of temperature and host availability on the host exploitation strategies of sexual and asexual parasitic wasps of the same species by Amat, I, Castelo, M, Desouhant, E, Bernstein, C

“…In the hymenopteran parasitoid Venturia canescens, asexual (obligate thelytoky not induced by Wolbachia bacteria) and sexual (arrhenotokous) wasps coexist in…”
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Clutch size manipulations in the chestnut weevil, Curculio elephas: fitness of oviposition strategies by Desouhant, E, Debouzie, D, Ploye, H, Menu, F

“…We test the adaptive value of clutch size observed in a natural population of the chestnut weevil Curculio elephas. Clutch size is defined as the number of…”
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Dispersal between host populations in field conditions: navigation rules in the parasitoid Venturia canescens by Desouhant, E., Driessen, G., Lapchin, L., Wielaard, S., Bernstein, C.

“…1. Dispersal is a life‐history trait that can have great ecological and evolutionary consequences, however understanding of how insects disperse is limited. 2…”
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Selection of fruits for oviposition by the chestnut weevil, Curculio elephas by Desouhant, E. (Claude Bernard Univ., Villeurbanne (France). Lab. de Biometrie, Genetique et Biologie de Populations)

“…Under field conditions, females of the chestnut weevil Curculio elephas select their oviposition sites. In sleeve experiments, when the number of fruits is…”
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Conspecific avoidance during foraging in Venturia canescens (Hymenoptera: Ichneumonidae): The roles of host presence and conspecific densities by CASTELO, Marcela K, CONEY, Juan C, DESOUHANT, Emmanuel

“…We explored the effects of the presence of conspecifics on host patch choice decisions made by the parasitoid Venturia canescens. Different odor sources were…”
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Resource limitation in natural populations of phytophagous insects. A long-term study case with the chestnut weevil by Debouzie, Domitien, Desouhant, Emmanuel, Oberli, Frantz, Menu, Frédéric

“…The chestnut weevil, Curculio elephas (Gyll.), is a non-outbreaking species whose populations and food resources, the European chestnut, Castanea sativa, can…”
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Oviposition pattern of phytophagous insects: on the importance of host population heterogeneity by Desouhant, E, Debouzie, D, Menu, F

“…Frequency distributions of insect immatures per host are often fitted to contagious distributions, such as the negative binomial, to deduce oviposition…”
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Where and what to feed? Differential effects on fecundity and longevity in the invasive Drosophila suzukii by Plantamp, C., Estragnat, V., Fellous, S., Desouhant, E., Gibert, P.

“…[Display omitted] •Healthy fruits, where Drosophila suzukii oviposit, cannot serve as feeding sites.•When the fruits are damaged, they constitute suitable…”
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Phenotypic plasticity in the invasive pest Drosophila suzukii : activity rhythms and gene expression in response to temperature by Plantamp, Christophe, Henri, Hélène, Andrieux, Thibault, Régis, Corinne, Mialdea, Gladys, Dray, Stéphane, Gibert, Patricia, Desouhant, Emmanuel

“…Phenotypic plasticity may contribute to the invasive success of an alien species in a new environment. A highly plastic species may survive and reproduce in…”
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Differential use of conspecific-derived information by sexual and asexual parasitic wasps exploiting partially depleted host patches by Amat, Isabelle, Desouhant, Emmanuel, Bernstein, Carlos

“…When foraging partially depleted patches (i.e., a fraction of hosts are already parasitized), female parasitoids must decide: 1--whether to superparasitize,…”
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Trans-generational effects of mild heat stress on the life history traits of an aphid parasitoid by Ismaeil, Ibrahim, Doury, Géraldine, Desouhant, Emmanuel, Dubois, Françoise, Prevost, Geneviève, Couty, Aude

“…Temperature changes are common in nature and insects are particularly exposed and sensitive to such variations which can be potential stresses, ultimately…”
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Bet-Hedging for Variability in Life Cycle Duration: Bigger and Later-Emerging Chestnut Weevils Have Increased Probability of a Prolonged Diapause by Menu, Frédéric, Desouhant, Emmanuel

“…Diversified bet-hedging for life cycle duration is defined as within-generation variability in cycle length expressed by a single genotype maximising mean…”
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Paternity and dominance loss in male breeders: the cost of helpers in a cooperatively breeding mammal by Lardy, Sophie, Cohas, Aurélie, Desouhant, Emmanuel, Tafani, Marion, Allainé, Dominique

“…Paternity insurance and dominance tenure length are two important components of male reproductive success, particularly in species where reproduction is highly…”
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Does synovigeny confer reproductive plasticity upon a parasitoid wasp that is faced with variability in habitat richness? by PELOSSE, PERRINE, JERVIS, MARK A, BERNSTEIN, CARLOS, DESOUHANT, EMMANUEL

“…Understanding the factors that constrain the reproductive success of animals and their demographics requires detailed insight into the processes of resource…”
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Differential energy allocation as an adaptation to different habitats in the parasitic wasp Venturia canescens by Pelosse, Perrine, Bernstein, Carlos, Desouhant, Emmanuel

“…Environmental pressures are expected to favour organisms that optimally allocate metabolic resources to reproduction and survival. We studied the resource…”
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Does Kin Recognition and Sib-Mating Avoidance Limit the Risk of Genetic Incompatibility in a Parasitic Wasp? by Metzger, M., Bernstein, C., Hoffmeister, T.S., Desouhant, E.

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dynamics of energy allocation in adult arrhenotokous and thelytokous Venturia canescens by Pelosse, Perrine, Amat, Isabelle, Bernstein, Carlos, Desouhant, Emmanuel

“…The ability to adjust resource allocation to the quality of the environment has broad implications for animal reproductive success. Organisms with complex life…”
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