Resistance of green lacewing, Chrysoperla carnea (Stephens), to buprofezin: cross resistance patterns, preliminary mechanism and realized heritability

In this study, a Field Strain of C. carnea was collected, assayed and selected with buprofezin to determine resistance development potential. After 8 generations of laboratory selection, C. carnea developed 392.37-fold and 16.16-fold resistance when compared to susceptible and Field Strains, respectively. Very low cross-resistance to pyriproxyfen (3.24-fold) and acetamiprid (5.38-fold) was observed in Bupro-SEL Strain when compared to Field Strains but cross-resistance to spinosad (3.21-fold) was negative. High realized heritability (h2= 0.49) value was observed in selected strain after 8 generations. Enzyme inhibitors (PBO & DEF) expressively reduced buprofezin resistance in resistant strain showing involvement of microsomal oxidases and esterases. These results show survival potential of C. carnea in cropping environment where insecticides are commonly employed.
Source: Biological Control - Category: Biology Source Type: research