6533b7d3fe1ef96bd1260803
RESEARCH PRODUCT
Infection of Bois-Noir tuf-type-I stolbur phytoplasma inHyalesthes obsoletus(Hemiptera: Cixiidae) larvae and influence on larval size
Michael MaixnerJes JohannesenAlfred SeitzC. Kaulsubject
Larvaanimal structuresfungiGrapevine yellowsBiologyCixiidaebiology.organism_classificationHemipteraInsect ScienceVector (epidemiology)BotanyInstarUrtica dioicaAgronomy and Crop SciencePathogendescription
Recent dramatic spread of the grapevine yellows disease Bois Noir (BN) in Germany is above all explained by highly increased abundances of the vector Hyalesthes obsoletus (Hemiptera: Cixiidae) associated to the plant Urtica dioica, the reservoir of the BN pathogen stolbur tuf-type-I. The vector acquires BN-phytoplasma as larvae whilst feeding on the roots of infected U. dioica. To understand the dynamics of the Urticacycle, we tested at what instar larvae become infected and whether infection affects larvae size (i.e. growth) at two sites in the Mosel Valley, Germany. Larvae were tested from infected plants and collected at instar-stages 3, 4 and 5. Larvae at stage 3 were already infected but infection rates increased significantly between stage 3 and 5, mean infection rates: 0.12–0.62. There was no effect of infection on larval size at any instar stage. J. Appl. Entomol.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-09-01 | Journal of Applied Entomology |