Emamectin benzoate resistance risk assessment in Dysdercus koenigii: Cross-resistance and inheritance patterns

Inheritance mode and metabolic mechanism of the sulfoximine insecticide sulfoxaflor resistance in Oxycarenus hyalinipennis (Costa)

“…comm.). Similar to our results, higher resistance levels have previously been reported following laboratory selections in DCB to chlorfenapyr (RR = 149.07‐fold), imidacloprid (RR = 104‐fold), 41,50 N. lugens to sulfoxaflor (RR =123.6‐fold), 42 P. solenopsis to acetamiprid (RR = 315‐fold) 81 and Dysdercus koenigii (Fabricius) to imidacloprid and emamectin benzoate 82,83 . However, the results of this study show that DCB has strong potential for the development of resistance to sulfoxaflor in the field (Fig.…”

“…In the current study, the nonsignificant difference in LC 50 values of F 1 and F 1 ' reciprocal crosses among resistant and susceptible populations revealed that no maternal effects were involved in controlling sulfoxaflor resistance in selected populations of DCB, rather its mode of inheritance was autosomal. The autosomal mode of resistance inheritance has also been reported in different insects to various insecticides like O. hyalinipennis to imidacloprid 41 and chlorfenapyr, 50 D. koenigii to imidacloprid and emamectin benzoate, 82,83 and M. domestica to fipronil 84 . However, in contrast to the present results, sex‐linked inheritance of lambda‐cyhalothrin resistance in Tetranychus urticae (Koch) (laboratory selected) has been reported 85 …”

“…Our results indicate the 0.2 value of h 2 in the Sulfo‐Sel strain and it is expected that DCB would need 6.6 generations for a 10‐fold increase in sulfoxaflor resistance. Other findings with different values of h 2 were reported in different cotton insect pests against various insecticides, for example O. hyalinipennis to fipronil was 0.24, 9 D. koenigii to imidacloprid and emamectin benzoate was 0.38 and 0.59, respectively, 82,83 P. solenopsis to spinosad and chlorpyrifos was 0.94 and 0.59, respectively, 93,103 and Spodoptera litura to imidacloprid was 0.15 21 . Although laboratory experiments are not a replica of field conditions, the estimated h 2 and projected rate ( G ) of resistance through laboratory selection could be used in devising resistance management strategy.…”

Characterization of dimethoate resistance in Oxycarenus hyalinipennis (Costa): resistance selection, cross-resistance to three insecticides and mode of inheritance

“…The development of insecticide resistance can be delayed by understanding the different genetic parameters i.e. sex linked or autosomal mode of inheritance, dominance levels and number of genes associated with insecticide resistance (Wyss et al 2003;Ullah et al 2016;Saeed et al 2020). The insecticide resistance is developed due to involvement of major and/or minor genes (Roush & McKenzie 1987) and allelic expression for resistance vary from dominant to recessive or intermediate between these traits (Stone 1968).…”

Sulfoxaflor resistance in Oxycarenus hyalinipennis (Costa) induces negligible cross‐resistance to other tested insecticides: stability, risk assessment, and fitness cost

“…Moreover, sulfoxaflor gives considerable control against O. hyalinipennis (personal communication with IPM expert, Mr. Muhammad Ismail, Syngenta Limited, Pakistan). About 8-10 insecticide sprays from organophosphate, pyrethroid, and novel chemistry classes are being applied for the control of different insect pests including O. hyalinipennis in cottoncultivating regions of Multan, 59 where the field population was collected. Our previous study showed that the inheritance of resistance to sulfoxaflor was incompletely dominant and polygenic under laboratory conditions.…”