University of Natural Resources and Life Sciences, Vienna (BOKU) - Research portal
Gewählte Master / Diploma Thesis:
Marianne Böing
(2009):
Untersuchungen zum Verhalten von Frankliniella occidentalis Pergande bei Kontakt mit den Attraktantien Anisaldehyd und Ethylnicotinat auf Gurke und Bohne.
Master / Diploma Thesis - Institut für Pflanzenschutz (IPS),
BOKU-Universität für Bodenkultur,
pp 80.
UB BOKU
obvsg
- Abstract:
- Scientific objective of this study was to research the behaviour of western flower thrips (Frankliniella occidentalis Pergande) (Thysanoptera: Thripidae) upon direct contact with the olfactory attractive scent compounds p-anisaldehyde and ethyl nicotinate applied to its host plants bean and cucumber. Experiments on take-off behaviour from treated or untreated plant material, choice tests on settling and feeding preferences as well as behavioural observations were conducted. The results of this study indicate a plant factor. The thrips responded differently to anisaldehyde or ethyl nicotinate, both compounds tested at 0.01% and 0.1% concentration. Treatment of bean leaves with 0.01% anisaldehyde led to significant shorter latency until first settling in choice test as well as in behavioural observations. This indicates anisaldehyde to act as arrestant on thrips. The results of the choice tests show that the effect of the scent treatments lasts only for about 3 hours. Moreover, the attractiveness of anisaldehyde was found to be concentration-dependent. Evaluation of the potential of attractive scent compounds applied to trap crops for use in push-pull strategies against F. occidentalis requires further studies.
- Beurteilende(r): Glauninger Johann
- 1.Mitwirkender: Koschier Elisabeth Helene