Measuring dispersive distance of DayGlo powder marked Euscelidius variegates (Hemiptera: Cicadellidae) in Oregon sweet cherry orchards

Monday, November 11, 2024

9:12 AM – 9:24 AM MST

Location: Phoenix Convention Center, 128 AB, PCC

Presenting Author(s)

Yan Yan (she/her/hers)

graduate research assistant
Oregon State University
Hood River, Oregon

Co-Author(s)

Anders Wohler (he/him/his)

Graduate Research Assistant
Oregon State University
Hood River, Oregon
MF

Maggie Freeman

Oregon State University
Hood River, Oregon
AT

Ashley Thompson

Oregon State University
Hood River, Oregon
KG

Kelsey Galimba

Oregon State University
Hood River, Oregon
Chris Adams

Assistant Professor Tree Fruit Entomology
Oregon State University
Hood River, Oregon

Mark-release-recapture (MRR) experiments were conducted on Euscelidius variegates, the key cherry X-disease vector in The Dalles, Oregon, to evaluate their movement and dispersal in managed cherry orchards. Adult leafhoppers were captured from cherry orchards using reversed leaf blowers, returned to the lab, sorted from bycatch, returned to the field, and marked with fluorescent powder, and released at multiple distances from a central sticky trap in two orchard sites. The marking method did not significantly affect the survival rate of E. variegates. The overall release-recapture rate, based on six MRR experiments within a 4-meter range, was 1.25%. The highest recapture rate was observed at 1 meter away from the central trap, followed by a sharp decline in subsequent distances. The estimated maximum dispersal distance of the marked population was determined to be between 6 and 11 meters. Possible effects of drive row ground cover are discussed. This research provides valuable insights into the movement patterns of E. variegates, and aids in the development of effective strategies for disease management and future IPM programs in Oregon cherry orchards.