บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Toxicity of ethyl formate to adult Sitophilus oryzae (L.), Tribolium castaneum (Herbst) and Rhyzopertha dominica (F.)

Ni Xin, Y.L. Ren, R.I. Forrester, Xue Ming and Daphne Mahon

Journal of Stored Products Research, Volume 44, Issue 3, 2008, Pages 241-246

2008

บทคัดย่อ

Toxicity of ethyl formate to adult Sitophilus oryzae (L.), Tribolium castaneum (Herbst) and Rhyzopertha dominica (F.)

Fumigations were conducted using a continuous flow-through laboratory process to maintain constant concentrations of ethyl formate and low levels (<0.8%) of respiratory carbon dioxide. The procedure minimised the effects of sorption by exposing test insects without media and minimised the effect of carbon dioxide by use of continuous flow. The concentration×time (Ct) products of ethyl formate for adult Sitophilus oryzae, Tribolium castaneum and Rhyzopertha dominica at 25 °C and 70% relative humidity for the 6 h exposure were, respectively: (1) LD50 107.8, 108.8 and 72.8 mg h L−1 and (2) LD99.5 207.4, 167.1 and 122.2 mg h L−1. Endpoint mortality was reached within 24 h of initial exposure.