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Attractiveness of sown weed strips on hoverflies (Syrphidae, Diptera), butterflies (Rhopalocera, Lepidoptera), wild bees (Apoidea, Hymenoptera) and thread-waisted wasps (Sphecidae, Hymenoptera) / Thomas Frank in Mitteilungen der Schweizerischen Entomologischen Gesellschaft, vol. 71, n°1-2 (1998)

Public [article]  inMitteilungen der Schweizerischen Entomologischen Gesellschaft > vol. 71, n°1-2 (1998) . - pp. 11-20 Titre : Attractiveness of sown weed strips on hoverflies (Syrphidae, Diptera), butterflies (Rhopalocera, Lepidoptera), wild bees (Apoidea, Hymenoptera) and thread-waisted wasps (Sphecidae, Hymenoptera) Type de document : texte imprimé Auteurs : Thomas Frank, Auteur Année de publication : 1998 Article en page(s) : pp. 11-20 Langues : Anglais (eng) Catégories : [habitats/milieux] 8 - Terres agricoles et paysages artificiels Mots-clés : Syrphidae  Rhopalocera  Apoidea  Sphecidae  diversité des espèces  espèce animale  densité  plante messicole Résumé : "In 1992 and 1993 a number of species and individuals of hoverflies, butterflies, wild bees, and threadwaisted wasps in sown weed strips, adjacent fields and a field boundary were investigated in the Swiss plateau near Bern. Insects were directly observed and quantified visually, and caught with yellow pantraps. Observations always revealed distinctly higher numbers of species and individuals in weed strips than in adjacent fields, but in yellow pan traps, opposite results or at least less distinct differences, were noted for some insect groups. In 1992, the two-year-old weed strip contained more species of hoverflies, butterflies and wild bees than the one-year-old strips. This was probably due to the more diverse supply of flowers in the two-year-old weed strip which contained both annual and perennial plants. Weed strips provided suitable nutritional conditions for flower visiting insects and were there¬ fore very attractive habitats for all insect groups investigated in this study." (source : auteur) Type de publication : périodique Référence biblio : Frank T., 1998 - Attractiveness of sown weed strips on hoverflies (Syrphidae, Diptera), butterflies (Rhopalocera, Lepidoptera), wild bees (Apoidea, Hymenoptera) and thread-waisted wasps (Sphecidae, Hymenoptera). Mitteilungen der Schweizerischen Entomologischen Gesellschaft, 71 : 11-20. ID PMB : 63767 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=63767 [article]

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The effect of weeds on the numbers of hoverfly (Diptera: Syrphidae) adults and the distribution and composition of their eggs in winter wheat / S.E. Cowgill in The Annals of applied Biology, vol. 123, n°3 (Décembre 1993)

Public [article]  inThe Annals of applied Biology > vol. 123, n°3 (Décembre 1993) . - pp. 499-515 Titre : The effect of weeds on the numbers of hoverfly (Diptera: Syrphidae) adults and the distribution and composition of their eggs in winter wheat Type de document : texte imprimé Auteurs : S.E. Cowgill, Auteur ; S.D. Wratten, Auteur ; N.W. Sotherton, Auteur Année de publication : 1993 Article en page(s) : pp. 499-515 Langues : Anglais (eng) Mots-clés : Syrphidae  plante messicole  herbicide  lutte biologique Résumé : "The abundance and species composition of syrphid adults in herbicide-treated and untreated headlands was recorded in a replicated within-field experiment conducted over a two-year period. The highest numbers of the most abundant syrphid species, Episyrphus balteatus, were recorded in the untreated headland strips. Analysis of the behaviour of the adult flies showed that they were retained in the untreated strips because they were foraging on the flowering non-crop plants. The distribution of syrphid eggs between herbicide treated and untreated headland replicates was examined. A significant positive relationship between the numbers of eggs per aphid and weed density was detected during June in the second year of the study. This is in part attributed to the tendency of Melanostoma females to oviposit on non-crop plants. The implications of the implementation of a modified herbicide regime in the headlands of cereal fields for the biological control of cereal aphids by syrphid larvae is discussed." (source : auteurs) Type de publication : périodique Référence biblio : Cowgill S.-E., Wratten S.-D., Sotherton N.-W., 1993 - The effect of weeds on the numbers of hoverfly (Diptera: Syrphidae) adults and the distribution and composition of their eggs in winter wheat. The Annals of applied Biology, 123 (3) : 499-515. ID PMB : 62745 Permalink : http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=62745 [article]

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