ISSN:
1573-8248
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Description / Table of Contents:
Summary In 1975–1976 studies have been undertaken on the fauna of the ash spangle galls in Barthelasse island near Avignon (France). It appears that this fauna is highly diversified with 4 main elements interacting at 3 levels: 1. the ériophyid miteEriophyes fraxinivorus (Nal.) responsible for gall induction; 2. the predatory cecidomyidArthrocnodax fraxinella (meade) (Diptera) and different phytoseiid mites (Amblyseius aberrans, Typhlodromus sp.); 3. the anthocoridO. vicinus (Hemiptera) has to be considered as “hyperpredator” as demonstrated by isolating galls in cloth bags. This species has the potential of attaining high numbers when galls are very numerous. However the reservoir effect of such a tree is restricted to the still unknown conditions determining cecidogenesis.
Notes:
Résumé Orius vicinus Rib. apparaît comme un élément important de la faune des galles des inflorescences du frêne dans lesquelles il peut atteindre des effectifs considérables. Vis-à-vis des cécidomyies prédatrices d'Eriophyes fraxinivorus Nal. agent de la cécidogénèse, il a un rôle de super-prédateur démontré par des expériences d'ensachage des galles. Par contre son action antagoniste paraît moins grande vis-à-vis des phytoséiides.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02373100
Permalink