EVALUATION OF THREE TERMITICIDES AGAINST SUBTERRANEAN TERMITE (SAND TERMITE), Psammotermes hypostoma (DESNUAX)

Abstract

Treatment with topical application showed that the pyrethroids group, (Cypermethrin) was the highest toxic against the subterranean termites Psammotermes hypostoma (Desn.) after 12 hr. where recorded (LD50 value = 0.056001 and LD90 reached to 0.59557 μg/worker), followed by chlorpyrifos, recorded (LD50 value = 0.08066 and LD90 reached to 0.42698 μg/worker), and fipronil was in the last rank where recorded (LD50 value = 0.089141 and LD90 reached to 1.33442 μg/worker). Data after 24 hr. indicated again that, cypermethrin in the first rank in the acute toxicity, while fipronil come in the next rank followed by chlorpyrifos (LD50 value recorded 0.02265, 0.026085 and 0.0393 μg/worker respectively), and the values of LD90 reached 0.10035, 0.1054 and 0.15748 μg/worker, respectively. At all times control recorded 2, 2 and 4 % for chlorpyrifos, fipronil and cypermethrin, respectively.

Foraging activity and population density for different castes individuals of subterranean termite, Amitermes desertorum (Desenux) (Isoptera: Termitidae) at Aswan governorate, Egypt

“…Many Ecological studies of subterranean termites are carried out to estimated caste composition, activity of foraging and relative density therefore, different methods have been used such as rolls of toilet paper (Lafage et al, 1973, andSaid, 1979), wooden stakes and blocks (Jones, 1990), fiberboard (Lafage et al, 1983) and rolls of corrugated cardboard (El-Sebay 1991 andEl-Bassiouny, 2001). Subterranean termites, Amitermes desertorum is one of the important economic pests in Egypt.…”