Spatial and temporal distribution of Empoasca vitis within a vineyard

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...

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Bibliographic Details
Published in:Agricultural and forest entomology 2008-05, Vol.10 (2), p.111-118
Main Authors: Decante, Damien, van Helden, Maarten
Format: Article
Language:English
Subjects:
Aggregation
Animal populations
Biogeography
cartography
Cicadellidae
Empoasca vitis
Entomology
geostatistics
Life Sciences
migration
Seasons
viticulture
Wineries & vineyards
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Summary: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.
ISSN:1461-9555
1461-9563
DOI:10.1111/j.1461-9563.2008.00366.x