Effects of Bt-oilseed rape on the foraging activity of Apis mellifera in confined environment and Osmia cornuta in laboratory

alimentazione delle api apis mellifera bacillus thuringiensis bee feeding bee plants brassica napus chromatographie en phase gazeuse colture in serra cultivos de invernadero elisa feeding preferences fenotipi fenotipos fiori fleur flores flowers fructosa fructose fruttosio gas chromatography gascromatografia gene transfer glucosa glucose glucosio greenhouse crops laboratory experimentation nectar nettare nourrissement des abeilles osmia phenotypes piante mellifere piante transgeniche plantas meliferas plante de serre polen pollen polline preferencias alimentarias preferenze alimentari saccarosio saccharose sucrosa sucrose test elisa transferencia de genes transgenic plants trasferimento del gene variedades varieties varietà