Gone with the wind: Aerial dispersal of Parthenolecanium corni crawlers in a newly planted grapevine plot

• DOI: 10.1111/aab.12505
• Publication Date: 2019-04-06T04:53:45Z
• Authors: Gérard Hommay; Louis Wiss; Joël Chadoeuf; Jean Le Maguet; Monique Beuve; Etienne Herrbach
• Keywords: Vineyard; Vine; Coccidae

Soft scales nymphs are suspected to propagate grapevine leafroll viruses in the vineyard, while moving from vine vine, but results of long distance dispersion, especially those due wind, poorly known. Thus, a net sticky cylindrical traps was placed newly planted plot evaluate aerial dispersal Parthenolecanium corni (Hemiptera Coccidae) nymphs. The surrounded by plots infested this species. Number crawlers collected on generally higher trap side exposed downwind and depended population density neighbouring vines. Coloured glitters size weight similar that were used simulate wind transport. highest number trapped at prevailing sector. A majority found close dispersion cups, most remote up 165 m away glitter source. Wind confirmed colonisation new P. , 2 years after plantation. settling young displayed no significant structure, as expected dispersal. Although Grapevine virus detected reverse transcription‐polymerase chain reaction several batches nymphs, these not vines colonised within 4 following