Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (1995) 68, 85-91

M. Feldhege, F. Louis and H. Schmutterer (1995)
Untersuchungen über Falterabundanzen des Bekreuzten Traubenwicklers Lobesia botrana Schiff. im Weinbau
[Investigations on abundances of the grape moth Lobesia botrana Schiff. in viticulture]
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 68 (4), 85-91
Abstract: In 1994 a catching device, which had been developed and tested in 1993, was used for answering questions about population density movements in L. botrana. Investigations were focused on abundance dynamics and absolute abundances of moths of both sexes. Movements of the sex ratio are shown. These movements are due to different developmental periods of premature stages of males and females. Calculations on the absolute abundance of moths of the second generation amounted to densities between 33 and 209 moths per 10 m². The number of eggs laid on bunches of grapes equalled approximately 30 per female. The density of moths and densities of eggs and larvae correlated. Densities of first generation larval populations and second generation moths populations of the pest showed no correlation. A temporary determination of the critical density of moths, which is important for the application of pheromones in mating disruption, was achieved. The upper limit equalled 4 male and 4 female moths per 10 m².
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: German)
Link to article at publishers website

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Lobesia botrana	Grapevine (Vitis)