Insecticide resistance status in the whitefly, Bemisia tabaci genetic groups Asia-I, Asia-II-1 and Asia-II-7 on the Indian subcontinent

Abstract

The present study is a summary of the current level of the insecticide resistance to selected organophosphates, pyrethroids, and neonicotinoids in seven Indian field populations of Bemisia tabaci genetic groups Asia-I, Asia-II-1, and Asia-II-7. Susceptibility of these populations was varied with Asia-II-7 being the most susceptible, while Asia-I and Asia-II-1 populations were showing significant resistance to these insecticides. The variability of the LC50 values was 7x for imidacloprid and thiamethoxam, 5x for monocrotophos and 3x for cypermethrin among the Asia-I, while, they were 7x for cypermethrin, 6x for deltamethrin and 5x for imidacloprid within the Asia-II-1 populations. When compared with the most susceptible, PUSA population (Asia-II-7), a substantial increase in resistant ratios was observed in both the populations of Asia-I and Asia-II-1. Comparative analysis during 2010–13 revealed a decline in susceptibility in Asia-I and Asia-II-1 populations of B. tabaci to the tested organophosphate, pyrethroid, and neonicotinoid insecticides. Evidence of potential control failure was detected using probit analysis estimates for cypermethrin, deltamethrin, monocrotophos and imidacloprid. Our results update resistance status of B. tabaci in India. The implications of insecticide resistance management of B. tabaci on Indian subcontinent are discussed.

Review and guide to a future naming system of African Bemisia tabaci species

“…It is known that species within the B. tabaci complex respond very differently to management interventions (Roditakis et al, ; Gnankine et al, ; Frewin et al, ; Naveen et al, ). Therefore, new management interventions implemented by farmers may have undesired consequences due to limited appreciation of the species being managed.…”

Beauveria bassiana con flupyradifurone para controlar Trialeurodes vaporariorum Vuill en el cultivo del ejote francés

“…Trialeurodes vaporariorum, integrated pest management, Phaseolus vulgaris, strata. un incremento en las poblaciones del insecto en los campos, haciendo más difícil el control de la plaga (Kandil et al, 2008;Campuzano-Martínez et al, 2010;Macías-Flores et al, 2013;Naveen et al, 2017).…”

Insecticide resistance and control failure likelihood of the whitefly Bemisia tabaci (MEAM1; B biotype): a Neotropical scenario

“…Therefore, the determination of the risk of control failure (or control failure likelihood, CFL) due to insecticide resistance requires specific determination using realistic methods simulating field exposure, commercial insecticide formulations used at their label rate, and a minimum threshold of field efficacy (Gontijo et al, ; Guedes, ). Previous studies with vegetable arthropod pest species have allowed evolving methods to determine CFL as the frequency of resistant individuals from which the resistance to an insecticide compromises its field efficacy (Silva et al, ; Gontijo et al, ; Guedes, ; Naveen et al, ). These recent efforts have not yet reached important invasive species other than the tomato pinworm Tuta absoluta (Meyrick), such as the invasive putative species of whitefly target of our study.…”

“…Roditakis et al, ; Fernández et al, ; Castle et al, ; Li et al, ; Panini et al, ). However, insecticide resistance studies on whiteflies are quickly increasing in the Eastern Palearctic and Indo‐Malay regions likely due to the enhanced problems detected with the current spreading of the MED species in China and India (Basit et al, , ; Yuan et al, ; Naveen et al, ; Zheng et al, ; Wang et al, , ). In curious contrast, we are aware of only three studies on whitefly resistance to insecticides in Neotropical America, two of them from Central America (Byrne et al, ; Satilla‐Ortega et al, ), and a single study from South America reporting low to moderate levels of resistance to the neonicotinoids imidacloprid and thiamethoxam (Silva et al, ).…”