Fipronil resistance in pink stem borer, Sesamia inferens (Walker) (Lepidoptera: Noctuidae) from Pakistan: Cross-resistance, genetics and realized heritability. (June 2019)

• Record Type: Journal Article
• Authors: Mansoor, Muhammad Mudassir; Raza, Abu Bakar Muhammad; Afzal, Muhammad Babar Shahzad
• Is Part Of: Crop protection. Volume 120(2019)
• Page Start: 103
• Page End: 108
• Publication Date: 2019-06
• Subjects: Sugarcane -- Pink stem borer -- Fipronil resistance -- Selection -- Inheritance; Plants, Protection of -- Periodicals; 632.05
• DOI: 10.1016/j.cropro.2019.02.028
• Languages: English
• ISSNs: 0261-2194

Abstract

Abstract: Pink stem borer Sesamia inferens (Walker) (Lepidoptera: Noctuidae) is a major pest of sugarcane and rice frequently controlled by the use of insecticides, including fipronil. This study focused on fipronil resistance characterization in S. inferens by selecting a population (called Fipro-SEL Pop) with fipronil for 14 generations. Fipro-SEL Pop population showed 106.00- and 22.71-fold resistance to fipronil when compared to unselected (UNSEL) and Field strains, respectively. Fipro-SEL strain showed no cross-resistance to chlorpyrifos, lambda-cyhalothrin and spinosad. Reciprocal crosses between Fipro-SEL and UNSEL strains revealed an autosomal and incompletely recessive nature of resistance to fipronil. The F1 and F1 ' showed similar LC50 values against fipronil and their dominance values were 0.46 and 0.53, respectively. Chi-square goodness of fit test suggested that fipronil resistance was polygenic. Realized heritability value was 0.25 for fipronil resistance. These outcomes would be useful for effective management of S. inferens . Highlights: Sesamia inferens showed 106- and 22.71-fold resistance to fipronil when compared to UNSEL and Field strains. Fipro-SEL strain showed no cross-resistance to other tested insecticides. Resistance to fipronil in Sesamia inferens was autosomal, incompletely recessive and polygenic. Realized heritability ( h 2 ) value was 0.25.