Influence of Riparian Habitat and Ground Covers on Threecornered Alfalfa Hopper (Hemiptera: Membracidae) Populations in Vineyards.

Journal of Economic Entomology
Houston WilsonKent M Daane

Abstract

Grapevine red blotch virus (GRBV) is the causal agent of grapevine red blotch disease, which affects wine grapes and leads to reduced crop yield and quality. While some virus spread can be attributed to the propagation of infected plant material, a greenhouse assay recently demonstrated that the threecornered alfalfa hopper (Membracidae: Spissistilus festinus Say) can transmit GRBV between grapevines. While S. festinus is not considered an economic pest of wine grapes, this species is present in California vineyards and their feeding can cause petiole girdling. Recent surveys have noted a correlation between S. festinus populations and GRBV-positive vines in vineyard areas adjacent to riparian habitat. Here, S. festinus populations were monitored over a 2-yr period at multiple vineyard sites adjacent to riparian habitats. At each site, insects were sampled from ground covers and the vine canopy at the vineyard edge and interior, and vines in both locations were evaluated for petiole girdling. Results indicate that there was no difference in abundance of S. festinus at the vineyard edge and interior. Populations in the vine canopy were highest in the late spring and early summer, and this was followed by the appearance of petiol...Continue Reading

References

Jun 27, 2012·Journal of Virology·Björn KrenzKeith L Perry
May 10, 2013·Phytopathology·Maher Al RwahnihMysore R Sudarshana
Mar 5, 2015·Phytopathology·Mysore R SudarshanaMarc F Fuchs
Apr 11, 2017·Virus Research·Elizabeth J CieniewiczMarc Fuchs
Sep 26, 2017·Phytopathology·Elizabeth J CieniewiczMarc Fuchs
Feb 14, 2018·Phytopathology·Luz Marcela YepesMarc Fuchs
Jan 11, 2019·Annual Review of Entomology·Cesar Rodriguez-SaonaRufus Isaacs
Feb 24, 2019·Journal of Economic Entomology·Cindy R PretoFrank G Zalom
Apr 24, 2019·Journal of Agricultural and Food Chemistry·Raul C GirardelloAnita Oberholster

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