Anne-Violette Lavoir's research while affiliated with Université Côte d'Azur and other places

... Intercropping systems have the potential to enhance sustainable agriculture by diversifying production, reducing pest and disease pressures [100][101][102], improving soil health, and optimizing resource use [103,104]. However, when establishing an intercropping system to enhance wheat yield, it is crucial to consider the crop compatibility with wheat. ...

... The study showed that O. laevigatus and O. majusculus could feed on whitefly nymphs and eggs but prefered thrips when presented with whiteflies and thrips. Zuma et al. (2022) researched the effect of E. kuehniella eggs as an alternative prey and alyssum as a companion plant against Macrosiphum euphorbiae Thomas (Hemiptera: Aphididae) (aphid). According to the results of the study, E. kuehniella eggs and alyssum, a companion plant, can positively affect the O. laevigatus population. ...

... This largely relies on pest dispersal capacity, and therefore not only depends on landscape crop compositionthe relative abundance of different crops in the landscapebut also on landscape crop configurationthe size, shape and spatial arrangement of crop patches [38,39]. However, diversifying crops in space and time can also favour, or at least have no effects, on generalist pest species [40]. Diversifying resources over time (reducing resource temporal continuity) can break pest life-cycle and therefore limit pest outbreaks [41]. ...

... Their main constituents could act at different stages of insect and mite development [12]. Moreover, EOs are often made up of several active substances with multiple modes of action that avoid the development of resistance phenomena in targeted pests [13]. ...

... However, without crop protection, losses due to pest damage would rise from 27% to 42% to 48-83% (Oerke and Dehne, 2004); Alternative means to control pest populations are thus required. Botanical pesticides are a promising alternative means of pest control based on the use of natural plant materials (Miresmailli et al., 2014;Siegwart and Lavoir, 2022). Although widely used before the mid-twentieth century, they were largely replaced by the advent of synthetic pesticides (carbamates, organochlorides, organophosphorous). ...

... The full chemical composition of the different EOs is available in the Supplementary Information S.1 (Louise Van Oudenhove, Cazier, et al., 2022). Hierarchical clustering show no particular trend linked to the plant family (Fig S.1 in Louise Van Oudenhove, Cazier, et al. (2022)). ...

... The South American tomato pinworm, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is a serious pest of tomato plants and other Solanaceae crops Desneux et al. 2022). This pest causes a significant reduction in crop productivity through larval feeding by mining leaves, stems, and fruits Desneux et al. 2022;Desneux et al. 2010). ...

... Such approaches could also be integrated with the use of service plants or alternative host plants to reduce N. tenuis phytophagy and damage on crop plants (Biondi et al. 2016Chailleux et al. 2022;Castillo et al. 2022). Since top-down effects of predators on pest populations can be strongly modulated by bottom-up effects such as the manipulation of inputs to crop plants, it would be interesting to investigate how bottom-up effects affect intraguild interactions and the pest control efficacy of predator combinations (Becker et al. 2021;Han et al. 2022). The optimization of these new IPM tools should provide more sustainable perspectives in the management of zoophytophagous mirids and other pests in vegetable agrosystems. ...

... Plant extracts can be submitted to a variety of assays to evaluate their insecticidal, acaricidal, nematocidal, or repellent potential, as well as their effect on oviposition. Standardized techniques include topical application, residual or surface contact, immersion in the extract or in a solution containing the extract, feeding bioassays, and fumigation [80,150]. Usually, the selected assay takes into consideration the unique biology of each pest, or its developmental stage, since the egg and larval stages have different morphological and biological characteristics than the adults. ...

... To evaluate the taxonomic relatedness among host species of each parasitoid population, we calculated a statistical measure of spatial autocorrelation (Moran's I) using the 'phylosignal' function of the 'phylosignal' package in R using a taxonomic tree (all branches length were identical) built based on the one described in Desneux et al. (2009a) (Table S1). In particular, it was shown that studying taxonomic and phylogenetic relationships between hosts yielded similar results (Monticelli et al. 2021); therefore, we considered only taxonomic relationships between hosts. To visualize the taxonomic correlogram, we used the 'Phylocorrelogram' function from the 'phylosignal' package. ...