Survivorship, tunneling and feeding behaviors of Coptotermes formosanus (Isoptera: Rhinotermitidae) in response to 2'-acetonaphthone-treated sand.
In laboratory tests, 2'-acetonaphthone was incorporated into sand at different concentrations (4.16-200 mg kg(-1)) and evaluated for survivorship, feeding and tunneling effects on the Formosan subterranean termite, Coptotermes formosanus Shiraki. 2'-Acetonaphthone at 8.33 mg kg(-1) sand significantly reduced survivorship (89-94%), tunnel area (68-91%) and food consumption (84-100%) compared with the control. Most of the dead workers were found at the release point and a few had traveled to the surface of the treated sand. Malformed workers (< or =27%) with an unexpected symptom of molting failure were observed, particularly at the lowest concentration tested (4.16 mg kg(-1)). In choice assays, threshold concentration for significant reduction in survivorship, tunnel construction in treated sand and food consumption in the treated-sand side was 8.33mg kg(-1) with termites collected from New Orleans, LA and 35.0 mg kg(-1) for those from Lake Charles, LA. Termites actively fed and tunneled in the untreated sand, whereas 2'-acetonaphthone at 140mg kg(-1) completely inhibited consumption of food placed on the treated sand.
Department of Plant Protection, Faculty of Agriculture, Minia University, Minia, Egypt.
Sanaa A
SA
Ibrahim
Gregg
G
Henderson
Huixin
H
Fei
Roger A
RA
Laine
D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects / Q000502:physiology; D004305:Dose-Response Relationship, Drug; D005247:Feeding Behavior / Q000187:drug effects* / Q000502:physiology; D020049:Isoptera / Q000187:drug effects* / Q000254:growth & development; D009281:Naphthalenes / Q000633:toxicity*; D012822:Silicon Dioxide / Q000032:analysis*; D013997:Time Factors
D009281:Naphthalenes; D012822:Silicon Dioxide