Api sentinelle

Un très bon reportage de Davide Conconi et Elia Regazzi sur nos recherches publiées dans la prestigieuse revue Science. Il Giardino di Albert, http://www.rsi.ch/albert. Voir le reportage (ça commence à 14’50’’)

Read more Api sentinelle

Isolation of Serratia marcescens involved in chitin degradation in the bulb mite Rhizoglyphus robini

There is an increasing awareness of the importance of the microbiome of arthropods to understand their host’s biology. In the bulb mite, Rhizoglyphus robini, associated bacteria have been found to be involved in its chitinolytic abilities. The bulb mite, a plant pest feeding on below- ground parts of mostly Liliaceae crops, prefers fungus- infested plants.…

Read more Isolation of Serratia marcescens involved in chitin degradation in the bulb mite Rhizoglyphus robini

The relative contributions of species richness and species composition to ecosystem functioning

How species diversity influences ecosystem functioning has been the subject of many experiments and remains a key question for ecology and conservation biology. However, the fact that diversity cannot be manipulated without affecting species composition makes this quest methodologically challenging. Here, we evaluate the relative importance of diversity and of composition on biomass production, by using partial Mantel tests…

Read more The relative contributions of species richness and species composition to ecosystem functioning

Potential for exploitative competition, not intraguild predation, between invasive harlequin ladybirds and flowerbugs in urban parks

Abstract In aphidophagous insect communities invaded by the harlequin ladybird Harmonia axyridis Pallas (Coleoptera: Coccinellidae), intraguild predation (IGP) is widely implicated in the displacement of native predators, however, indirect trophic interactions are rarely assessed. Using molecular gut-content analysis, we investigated the relative frequencies of IGP by H. axyridis on the predatory flower bug Anthocoris nemoralis Fabricius (Heteroptera: Anthocoridae) and prey overlap for a shared…

Read more Potential for exploitative competition, not intraguild predation, between invasive harlequin ladybirds and flowerbugs in urban parks