嗜卷书虱气调抗性与熏蒸剂抗性的相互关系

The Relationship Between Resistance to Controlled Atmosphere and Insecticides of Liposcelis bostrychophila Badonnel (Psocoptera: Liposcelididae)

嗜卷书虱(Liposcelis bostrychophia Badonnel)是一种重要的储藏物害虫,经过气调和药剂的抗性筛选,可以获得抗高CO2品系(RCO2-R)、抗低O2+高CO2品系(HCLO-R)和抗DDVP品系(DDVP-R)、抗PH3品系(PH3-R)。本项研究在获得4个抗性品系的基础上,系统测定了各抗性品系对不同处理的交互抗性指数,以及交互抗性指数间的重叠值(Ov)和差异度(Sv)等。结果表明,各抗性品系之间存在着双向交互抗性,其中,HCO2-R品系对低O2+高CO2气调处理的抗性指数为3.2458,而HCLO-R品系对高CO2气调处理的抗性指数仅为1.8280;DDVP-R品系对PH3的抗性指数为3.9614,而PH3-R品系对DDVP的抗性指数为2.7852; DDVP-R和PH3-R品系对高CO2的抗性指数分别为1.3550和1.1816,但HCO2-R品系对DDVP的抗性指数为2.1372,对PH3的抗性指数为3.3698,因此,一旦形成了对高CO2的抗性,则对PH3也会产生明显抗性,但形成了对PH3的抗性品系而对高CO2仍有一定的敏感性。两个抗药性品系均对低O2+高CO2气调处理产生了一定的抗性,但当形成了抗低O2+高CO2的品系之后,对DDVP的处理仍有较大的敏感性,HCLO-R品系对PH3也形成了抗性,但PH3的抗性品系对低O2+高CO2气调处理的抗性要低一些。各抗性品系之间对不同处理均存在着交互抗性和双向交互抗性,各品系之间双向交互抗性的差异表?

A systematic study was conducted on the important stored product insect, Liposcelis bostrychophila Badonnel, which is about the cross-resistance of 4 resistant strains, HCO2-R (hypercarbia-resistant strain), HCLO-R (hypoxia and hypercarbia resistant strain), DDVP-R(DDVP-resistant strain) and PH3-R (PH3- resistant strain). The results indicated that there were cross-resistances between CA and insecticides, and the quantities of the cross-resistances were different. The cross-resistance factor (RF) of HCO2-R to hypoxia and hypercarbia was 3.2458, while, that of HCLO-R to hypercarbia was 1.8280. The RF of DDVP-R to PH3 was 3.9614, while, that of PH3-R to DDVP was 2.7852. The RF values of DDVP-R and PH3-R to hypercarbia were 1.3550 and 1.1816, respectively. However, the RF of HCO2-R to DDVP was 2.1372. There was also a low cross-resistance between DDVP-R and HCO2-R. The RF of HCO2-R to PH 3 was 3.3698. This suggested that the insects resistant to high CO2 concentration atmosphere would develop significant resistance to PH3, however, the insects resistant to PH3 remain sensitive to hypercarbia atmosphere. Both DDVP-R and PH3-R developed resistance to high CO2 treatment. There was a low cross-resistance between DDVP-R and HCLO-R. The insects resistant to hypoxia and hypercarbia were very sensitive to DDVP. There was also a cross-resistance between HCLO-R and PH3-R, but the resistance of PH3-R to hypoxia and hypercarbia was lower than that of HCLO-R to PH3. The differences of the overlapping and separate values indicated that there were differences in the intercross-resistance of 4 resistance strains.