Seasonal Variation of Pheromone Concentration in Mating Disruption Trials Against European Grape Vine Moth Lobesia botrana (Lepidoptera: Tortricidae) Measured by EAG
Autor: | G. Karg, Arne E. Sauer |
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Rok vydání: | 1997 |
Předmět: | |
Zdroj: | Journal of Chemical Ecology. 23:487-501 |
ISSN: | 0098-0331 |
DOI: | 10.1023/b:joec.0000006373.19897.eb |
Popis: | Spatial and temporal distributions and relative concentrations of the pheromone of the European grape vine moth Lobesia botrana (Lepidoptera: Tortricidae) were measured in mating disruption trials with electroantennograms. Measurements were carried out over several years during the flight season of the two generations of this pest insect. In three consecutive years significantly higher mean relative pheromone concentrations were measured in summer during the flight of the second generation of L. botrana than in spring during the flight of the first generation (P 0.05), but were significantly lower than those of a nearby intact vineyard (P < 0.001). The results provided additional evidence that foliage is an important parameter determining mean pheromone concentrations and temporal and spatial distribution of pheromone in mating disruption trials. |
Databáze: | OpenAIRE |
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