Département fédéral de l'économie DFE Station de recherche Agroscope Changins-Wädenswil ACW Hyalesthes obsoletus , vector of bois noir: distribution and host plant preferences in Switzerland Patrik Kehrli, Sébastien Kessler, Santiago Schaerer & Nicolas Delabays COST Action FA0807, Sitges 1 February 2010
Bois noir Situation in Switzerland COST Action FA0807 | Sitges 1/2/2010 P. Kehrli et al.
Hyalesthes obsoletus National survey 2008 667 individuals were found on nettle, 8 on bindweed COST Action FA0807 | Sitges 1/2/2010 P. Kehrli et al.
Bois noir Vector Cicadella viridis Cicadella viridis Aphrophora alni Aphrophora alni Hyalesthes obsoletus Reptalus cuspidatus Reptalus cuspidatus Of 33 taxa analysed, only Hyalesthes obsoletus was positive for the stolbur 16Sr-XII-A group Macrosteles quadripunctulatus Macrosteles quadripunctulatus COST Action FA0807 | Sitges 1/2/2010 P. Kehrli et al.
Hyalesthes obsoletus Host plant preferences Aspirator a 40 N adults/sample 30 20 10 b b b b b b b b b b 0 Calystegia Amaranthus Urtica Taraxacum Plantago Clematis Convolvulus Ononis Vitis Polygonum Solanum Yellow sticky traps 1.6 a N adults/trap 1.2 0.8 a 0.4 a a a 0 Calystegia Urtica Convolvulus Cardaria Clematis COST Action FA0807 | Sitges 1/2/2010 P. Kehrli et al.
Hyalesthes obsoletus Host plant preferences * 200 150 N adults/sample 100 50 0 Convolvulus Urtica COST Action FA0807 | Sitges 1/2/2010 P. Kehrli et al.
Hyalesthes obsoletus Host plant preferences COST Action FA0807 | Sitges 1/2/2010 P. Kehrli et al.
Hyalesthes obsoletus Host plant preferences Location of observed insects 20 *** N adults/observation 15 10 5 0 C onvolvulus U rtica COST Action FA0807 | Sitges 1/2/2010 P. Kehrli et al.
Perspectives – Point of time for weed control – Transmission experiments – Susceptibility of different grape varieties – Mechanism of host finding (visual and olfactory cues) COST Action FA0807 | Sitges 1/2/2010 P. Kehrli et al.
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