Erythritol and Lufenuron Detrimentally Alter Age Structure of Wild Drosophila suzukii (Diptera: Drosophilidae) Populations in Blueberry and Blackberry.
We report on the efficacy of 0.5 M (61,000 ppm) erythritol (E) in Truvia Baking Blend, 10 ppm lufenuron (L), and their combination (LE) to reduce egg and larval densities of wild populations of Drosophila suzukii (Matsumura) infesting fields of rabbiteye blueberries (Vaccinium virgatum) and blackberries (Rubus sp.). Formulations included the active ingredients (lufenuron, erythritol, or both), sugar (in control and erythritol treatments), and Dawn hand-soap applied to plants with pressurized 3-gallon garden spray tanks. The three chemical treatments (E, L, and LE) had no effect on D. suzukii ovipositing in blackberry and blueberry fruit, but they did reduce larval infestation by 75%, particularly densities of first and second instars. Erythritol and lufenuron were equally efficacious compounds as a D. suzukii ovicide and larvicide, but they did not display additive or synergistic activity. Extremely high larval mortality in control fruits show an age structure heavily skewed toward egg output.
USDA-ARS Thad Cochran Southern Horticultural Laboratory, 810 Hwy., 26 West, Poplarville, MS 39470 (blair.sampson@ars.usda.gov; Donna.Marshall@ars.usda.gov; barbara.smith@ars.usda.gov; stephen.stringer@ars.usda.gov; chris.werle@ars.usda.gov; daniel.magee@ars.usda.gov; John.Adamczyk@ars.usda.gov).
B J
BJ
Sampson
USDA-ARS Thad Cochran Southern Horticultural Laboratory, 810 Hwy., 26 West, Poplarville, MS 39470 (blair.sampson@ars.usda.gov; Donna.Marshall@ars.usda.gov; barbara.smith@ars.usda.gov; stephen.stringer@ars.usda.gov; chris.werle@ars.usda.gov; daniel.magee@ars.usda.gov; John.Adamczyk@ars.usda.gov).
D A
DA
Marshall
USDA-ARS Thad Cochran Southern Horticultural Laboratory, 810 Hwy., 26 West, Poplarville, MS 39470 (blair.sampson@ars.usda.gov; Donna.Marshall@ars.usda.gov; barbara.smith@ars.usda.gov; stephen.stringer@ars.usda.gov; chris.werle@ars.usda.gov; daniel.magee@ars.usda.gov; John.Adamczyk@ars.usda.gov).
B J
BJ
Smith
USDA-ARS Thad Cochran Southern Horticultural Laboratory, 810 Hwy., 26 West, Poplarville, MS 39470 (blair.sampson@ars.usda.gov; Donna.Marshall@ars.usda.gov; barbara.smith@ars.usda.gov; stephen.stringer@ars.usda.gov; chris.werle@ars.usda.gov; daniel.magee@ars.usda.gov; John.Adamczyk@ars.usda.gov).
S J
SJ
Stringer
USDA-ARS Thad Cochran Southern Horticultural Laboratory, 810 Hwy., 26 West, Poplarville, MS 39470 (blair.sampson@ars.usda.gov; Donna.Marshall@ars.usda.gov; barbara.smith@ars.usda.gov; stephen.stringer@ars.usda.gov; chris.werle@ars.usda.gov; daniel.magee@ars.usda.gov; John.Adamczyk@ars.usda.gov).
C T
CT
Werle
USDA-ARS Thad Cochran Southern Horticultural Laboratory, 810 Hwy., 26 West, Poplarville, MS 39470 (blair.sampson@ars.usda.gov; Donna.Marshall@ars.usda.gov; barbara.smith@ars.usda.gov; stephen.stringer@ars.usda.gov; chris.werle@ars.usda.gov; daniel.magee@ars.usda.gov; John.Adamczyk@ars.usda.gov).
D J
DJ
Magee
USDA-ARS Thad Cochran Southern Horticultural Laboratory, 810 Hwy., 26 West, Poplarville, MS 39470 (blair.sampson@ars.usda.gov; Donna.Marshall@ars.usda.gov; barbara.smith@ars.usda.gov; stephen.stringer@ars.usda.gov; chris.werle@ars.usda.gov; daniel.magee@ars.usda.gov; John.Adamczyk@ars.usda.gov).
J J
JJ
Adamczyk
D000367:Age Factors; D000818:Animals; D001549:Benzamides / Q000494:pharmacology*; D029798:Blueberry Plants; D000069601:Crop Protection / Q000379:methods*; D004330:Drosophila / Q000187:drug effects*; D004896:Erythritol / Q000494:pharmacology*; D007300:Insect Control; D008922:Mississippi; D010063:Ovum / Q000187:drug effects; D065856:Rubus; D005466:Fluorocarbons
D001549:Benzamides; D004896:Erythritol; C070364:fluphenacur; D005466:Fluorocarbons
Drosophila suzukii; IPM; Truvia; chitin synthesis inhibitor; sugar alcohol