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- Title
Spatial and temporal distribution of Empoasca vitis within a vineyard.
- Authors
Decante, Damien; van Helden, Maarten
- 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.
- Subjects
EMPOASCA; NYMPHALIDAE; VINEYARDS; SPRING; SUMMER
- Publication
Agricultural & Forest Entomology, 2008, Vol 10, Issue 2, p111
- ISSN
1461-9555
- Publication type
Article
- DOI
10.1111/j.1461-9563.2008.00366.x