caa a22 4500 465789218 CHVBK 20180323112018.0 cr unu---uuuuu 170327e19900301xx s 000 0 eng 10.1007/BF01417912 doi (NATIONALLICENCE)springer-10.1007/BF01417912 Oviposition behavior of the cabbage root fly, Delia radicum (L.), influenced by host plant extracts [Elektronische Daten] [Erich Städler, Reto Schöni] An ethanolic extract of cabbage leaves (Brassica oleraceavar. capitata,Golden Acre)and derived fractions were tested on natural and surrogate leaves in order to study the oviposition behavior of the cabbage root fly Delia radicum(Diptera: Anthomyiidae). On surrogate plastic leaves coated with a thin layer of paraffin wax and treated with 0.1 gram leaf equivalent (gle) of an ethanolic raw cabbage extract, the females displayed the same sequence of behavioral patterns as on a natural host plant. The quantified oviposition behavior correlated well with the actual number of eggs laid. The extract-treated surrogate leaves received at least as many eggs as natural leaves with a similar surface area. Previous exposure to surrogate or natural leaves seemed not to induce a specific preference. The three fractions (hexane, butanol, and water) of the raw extract stimulated the oviposition behavior. This was taken as evidence for the presence of a multicomponent mixture or a "chemical pattern” in the cabbage leaves stimulating oviposition. At the tested concentration each fraction alone could stimulate in some individuals the complete behavior. No effect of volatile components of the raw extract could be detected. This is thought to be due to the extraction procedure, which limits the production of attractive, volatile compounds, such as isothiocyanates. Plenum Publishing Corporation, 1990 oviposition behavior nationallicence Delia radicum nationallicence host plant chemicals nationallicence glucosinolates nationallicence Städler Erich Eidg. Forschungsanstalt, CH-8820, Wädenswil, Switzerland aut Schöni Reto Hoffmann-La Roche & Co. AG, 4000, Basel, Switzerland aut Journal of Insect Behavior Kluwer Academic Publishers-Plenum Publishers 3/2(1990-03-01), 195-209 0892-7553 3:2<195 1990 3 10905 https://doi.org/10.1007/BF01417912 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01417912 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Städler Erich Eidg. Forschungsanstalt, CH-8820, Wädenswil, Switzerland aut NATIONALLICENCE 700 1- Schöni Reto Hoffmann-La Roche & Co. AG, 4000, Basel, Switzerland aut NATIONALLICENCE 773 0- Journal of Insect Behavior Kluwer Academic Publishers-Plenum Publishers 3/2(1990-03-01), 195-209 0892-7553 3:2<195 1990 3 10905 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer