Agricultural and Forest Entomology (2008) 10, 111-118

Damien Decante and Maarten van Helden (2008)
Spatial and temporal distribution of Empoasca vitis within a vineyard
Agricultural and Forest Entomology 10 (2), 111-118
Abstract: 1 The intra-plot spatial distribution of the green leafhopper Empoasca vitis (Goethe) (Cicadellidae, Empoascini) was assessed over three successive growing seasons in a Bordeaux vineyard. Weekly measurements of adult trappings and nymphal counts were performed in a 1.7-ha plot on 130 sampling points.
2 Statistical and geostatistical analyses revealed inconsistent spatial distributions of adults and nymphs in spring, but consistent spatial distributions in summer, which were identical every year.
3 Similarities between spatial distributions of the mobile adults and the sedentary and aggregated nymphs strongly suggest that adults disperse inside the plot to areas preferred for egg deposition.
4 The similarity of summer populations among years suggests that this insects distribution is based on (perennial) differences in plot characteristics.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Maarten Van Helden

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

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Hebata vitis		France