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Communication Dans Un Congrès Année : 2022

Genetic structure of codling moth populations from worldwide to farm spatial scales

Résumé

The genetic diversity and structure of codling moth (Cydia pomonella L.) populations at several spatial scales were carried out with a panel of microsatellite markers. First, the codling moth evolutionary history based on the genetic differentiation between 25 worldwide populations sampled in apple and walnut orchards was analyzed to sheds light on the main centers of diversification, the routes of colonization, and specialization to host plants. Secondly, key population demographic parameters (dispersal, reproduction) and their variations depending on agricultural practices and landscape characteristics were estimated from the comparison of the genetic variability between individuals. Dispersal was assessed from spatial autocorrelations of the genetic structure (isolation by distance) at the scales of the European continent, a production basin (lower Durance valley, France), and a cluster of orchards in a farm. All these works confirmed the low dispersal of the codling moth in spite of the ability of the pest to move on long distance and to attack various fruits.
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Dates et versions

hal-04221377 , version 1 (28-09-2023)

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  • HAL Id : hal-04221377 , version 1

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Pierre Franck, Bertrand Gauffre, Jérôme Olivares. Genetic structure of codling moth populations from worldwide to farm spatial scales. XXVI International Congress of Entomology, Hokkanen, Heikki, Jul 2022, Helsinki, Finland, France. ⟨hal-04221377⟩
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