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Weed seed choice by carabid beetles (Coleoptera: Carabidae): Linking field measurements with laboratory diet assessments / Sandrine Petit in European Journal of Entomology, 111 (5) (2014) 

Public Citation [article]  inEuropean Journal of Entomology > 111 (5) (2014) . - 615-620 Titre : Weed seed choice by carabid beetles (Coleoptera: Carabidae): Linking field measurements with laboratory diet assessments Type de document : Imprimé Auteurs : Sandrine Petit (1969-) ; Aline Boursault ; David A. Bohan Année de publication : 2014 Article en page(s) : 615-620 Langues : Anglais (eng) Mots-clés : Capsella bursa-pastoris (L.) Medik.  Viola arvensis Résumé : Carabid beetles could potentially provide a number of ecosystem services in arable fields, including the regulation of weeds by eating seeds. Spatio-temporal variability in the incidence of predation combined with a limited understanding of the interactions between carabids and seed predation, currently limits our ability to assess the effectiveness of this service. We carried out a long-term field study of carabid communities and the incidence of predation of the seeds of 5 species of weeds and laboratory cafeteria choice-tests to quantify the preferences of the most abundant species of seed-eating carabid for the seeds of 10 species of weeds. The field study revealed important temporal variation both in carabid activity-density and seed predation, with the seed of Viola arvensis and Capsella bursa-pastoris being particularly preferred by the carabids. The laboratory cafeteria tests confirmed the predation preferences measured in the field, in showing strong preferences by both Pterostichus melanarius and Pseudoophonus rufipes for the seed of V. arvensis. The percentage predation of the seed of V. arvensis was associated with the activity-density of carabids, while that of the seed of C. bursa-pastoris was not. Integrating laboratory-measured daily consumption rates, per carabid taxa, into models improved the ability to predict the intensity of predation of the seed of V. arvensis based on the composition of carabid communities. Lien pérenne : DOI : 10.14411/eje.2014.086 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150251 Petit, Sandrine (1969-), Boursault, Aline, Bohan, David A. 2014 Weed seed choice by carabid beetles (Coleoptera: Carabidae): Linking field measurements with laboratory diet assessments. European Journal of Entomology, 111(5): 615-620.

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Weeds in agricultural landscapes. A review / Sandrine Petit in Agronomy for sustainable Development, 31 (2) (2011)

Public Citation [article]  inAgronomy for sustainable Development > 31 (2) (2011) . - 309-317 Titre : Weeds in agricultural landscapes. A review Type de document : Imprimé Auteurs : Sandrine Petit (1969-) ; Aline Boursault ; Mélanie Le Guilloux ; Nicolas Munier-Jolain ; Xavier Reboud Année de publication : 2011 Article en page(s) : 309-317 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Messicole [CBNPMP-Thématique] Restauration des écosystèmes Résumé : There is currently an increasing societal and political shift towards more sustainable agricultural systems to provide both food production and ecological biodiversity levels. This shift has recently modified scientific questioning and brought up new research challenges for agro-ecological research. This is the case in particular for weed management, where issues have so far largely focused on the conflict between weeds and crop productivity. Here, we review recent findings that have led to a changing perception on weeds in agro-ecosystems and upcoming areas in terms of weed management options. Our main findings are that weeds have numerous interactions with other organisms and, in turn, some of these interactions can have direct, either negative or positive, effects on the functioning of the agro-ecosystem. Many interactions are species-specific, and therefore assessing the role of weed communities in the agro-ecosystem would benefit from further development in the functional grouping of weed species. In terms of weed management our review shows that alternative cropping systems can deliver both good levels of crop productivity and of weed management at the field level. Weeds respond to landscape attributes and there is a need to fully assess the scope for utilizing the spatio-temporal organization of cropping systems and uncultivated habitats as a tool for minimizing weed infestations. Weeds are also submitted to biological regulation through the predation of their seeds and further research is required to assess the effect of cropping systems and landscape on levels of weed natural enemies, and therefore on the potential contribution of biological regulation in the management of weeds. Lien pérenne : DOI : 10.1051/agro/2010020 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=149781 Petit, Sandrine (1969-), Boursault, Aline, Le Guilloux, Mélanie, Munier-Jolain, Nicolas, Reboud, Xavier 2011 Weeds in agricultural landscapes. A review. Agronomy for sustainable Development, 31(2): 309-317.

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Code-barres	Cote	Support	Localisation	Section	Disponibilité
R15763	P-1945	Revue	Bureaux	Restauration écologique	Consultable