BOUT , Alexandre

National audience

Pourquoi un panorama sur les punaises ? Celles-ci étaient considérées jusqu'à récemment comme des ravageurs secondaires pouvant causer des dégâts épisodiquement et localement. Depuis une dizaine d'années, de nombreuses espèces de punaises émergent comme ravageurs de plantes cultivées causant des dégâts de plus en plus fréquents et importants.

Le jeu « STÅL Invasions », du nom d'un célèbre entomologiste suédois du 19ème siècle, Carl Stål*, est un « learning game » qui place les joueurs en situation d'appliquer les principes de la protection des plantes en agroécologique (protection des cultures, solutions de biocontrôle et de lutte biologique, intrants naturels et de synthèse,...

Nezara viridula is responsible for significant damage on cucumber, eggplant and tomato. This stink bug feeds on plant tissue causing desiccation of apices and flower bud drop; it also attacks fruits, causing deformation. Insecticides registered to control N. viridula are not compatible with natural enemies, as they disrupt integrated pest...

International audience

Augmentative biological control is based on the repeated introduction of mass-produced biological control agents as predators or parasitoids with the aim of temporarily controlling or even eradicating pest populations. The different augmentative strategies form a continuum ranging from preventive releases of small numbers of natural enemies...

International audience

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We report the first detection of Trissolcus mitsukurii in France. More than 1860 sentinel egg masses of Halyomorpha halys (BMSB) were exposed in the field during the 2018–2020 period, and 12 specimens of T. mitsukurii emerged from one egg mass. Their taxonomic identification was confirmed both by morphological and molecular analysis. Trissolcus...

We report the first detection of Trissolcus japonicus in southwestern France. A total of almost 3000 sentinel and 700 field-laid egg masses of Halyomorpha halys were exposed or collected in the administrative region of Nouvelle-Aquitaine in 2022 and 2023. A total of 12 and 44 specimens of T. japonicus emerged from one and two egg masses in 2022...

In crop systems, different types of plant or secondary crop may be grown together with the primary crop for pest management purposes. These additional plants - henceforth called secondary plants - may increase the efficiency and sustainability of biological control of pests by natural enemies. Such plants fall into several categories:...

International audience

In recent years, the collection of eggs of stink bugs (Pentatomidae) has intensified because of the attention given to egg parasitoids in classical biological control strategies against Halyomorpha halys (Stål) in Europe. Several specimens belonging to the genus Telenomus Haliday emerged from field-collected pentatomid eggs. Taxonomic knowledge...

Thrips are among the most important pests in greenhouses worldwide because of recurrent outbreaks of both native and invading species. Yet, their biodiversity, distribution and ecology remain still poorly documented, probably because of their small size, the high morphological similarity between taxa and their discretion apart from the outbreak...

Protected cultivation or Controlled Environment Agriculture (CEA) system has increased tenfold in the last 25 years thanks to tremendous scientific and technical breakthroughs, mainly directed to increasing crop yields and adapting to tough ambient conditions. Currently, greenhouse areas are still spreading and the CEA system is one of the...

National audience

A parasitoid wasp, Gryon aetherium Talamas (Hymenoptera, Scelionidae), was reared from eggs of the invasive stink bug Bagrada hilaris (Burmeister) (Hemiptera, Pentatomidae) in Chile. The identification of G. aetherium , which is under study as a biological control agent, was made with morphological and molecular data in the context of a recent...

National audience

Conventional crop protection is reaching its limits through the inefficacy of the products and the unintended impacts on the environment. Integrated protection, using in particular auxiliaries, nevertheless depends on the development of reliable methods for estimating population densities of pests and auxiliaries. From a tool already partially...

National audience

Thrips are among the most important pests in greenhouses worldwide because of recurrent outbreaks of both native and invading species. Yet, the biodiversity, distribution and ecology of thrips taxa are still poorly documented. Reasons accounting for this situation are probably their small size, the high morphological similarity among taxa and...

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The IMPULsE project, that began in 2017, will end at the end of this year (2020). Several methods have been evaluated on tomato, eggplant and cabbage for the management of plant-feeding bugs. In addition, important work has been carried out to characterize plant bugs belonging to the Lygus and Eurydema genera in order to better understand these...