Insecticide Resistance

Romero, Alvaro

doi:10.1002/9781119171539.ch29

Cited by 23 publications

(12 citation statements)

References 59 publications

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“…This was evident in the mortalities produced by the LLINs as field bed bugs exposed to regular insecticide applications in the home (selective pressure) demonstrated significantly lower mortality compared with field samples exposed to relatively less insecticidal activity. The widespread pyrethroid resistance in bed bug populations from multiple countries has been well reviewed ( Davies et al 2012 , Dang et al 2017 , Romero 2018 ). Pyrethroid resistance and mechanisms that confer pyrethroid resistance have been detected in both C. lectularius and C. hemipterus populations found across Asia, Australia, Europe, Indian subcontinent, Middle East, United Kingdom, United States, and from Africa.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Tropical Bed Bug (Hemiptera: Cimicidae), Infestations in Cape Coast, Ghana: Household Control Practices and Efficacy of Commercial Insecticides and Long-Lasting Insecticidal Nets Against Field Bed Bugs

Deku

Combey

Doggett

et al. 2021

Journal of Medical Entomology

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This study reports the first baseline information on tropical bed bug, Cimex hemipterus (F.) (Hemiptera: Cimicidae), infestations in Ghana. The purpose of this study was to assess bed bug infestation levels, and the efficacy of locally available insecticides and long-lasting insecticidal nets (LLINs) in controlling field bed bugs populations in the Cape Coast region. A survey was undertaken to assess bed bug infestation levels and current control practices by residents. In total, 205 bed bug affected households were identified in 20 communities and live bed bug infestations were associated with most of these premises. Many homeowners knew of other households (from 1 to 3) with a bed bug infestation. Residents reported itching and swelling of the skin from the bed bug bites and the bites were considered severe. The most common household bed bug control strategy was the application of insecticides. However, LLINs and commercially formulated insecticides commonly used by households (notably chloropyrifos and pyrethroid-based formulations) did not efficaciously suppress field collected strains of C. hemipterus. Using a dipping bioassay, mean mortality ranged from 0 to 60% for eggs, nymphs, and adults, and less than 40% mortality was observed in bed bugs placed on insecticide-treated filter paper. Each LLINs (all are pyrethroid based) produced a mean mortality of less than 20% in adult bed bugs. For a more effective response to the global bed bug resurgence in developing countries, government and supporting agencies need to render assistance to bed bug affected residents through the provision of improved pest management strategies.

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Section: Discussionmentioning

confidence: 99%

Assessment of Tropical Bed Bug (Hemiptera: Cimicidae), Infestations in Cape Coast, Ghana: Household Control Practices and Efficacy of Commercial Insecticides and Long-Lasting Insecticidal Nets Against Field Bed Bugs

Deku

Combey

Doggett

et al. 2021

Journal of Medical Entomology

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“…Due to this behaviour, monitoring their presence is difficult. Due to the occurrence of multiple insecticide resistance mechanisms (Dang et al ., 2017; Romero, 2018) combined with a limited range of effective insecticides, control becomes challenging, especially in countries with strict regulations on insecticidal compounds (Kilpinen et al ., 2011).…”

Section: Introductionmentioning

confidence: 99%

Early evidence of establishment of the tropical bedbug (Cimex hemipterus) in Central Europe

Balvín

Šašinková

Martinů

et al. 2021

Medical Vet Entomology

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In recent decades, the world has witnessed a remarkable resurgence of bedbugs (Hemiptera: Cimicidae). Although populations of the common bedbug, Cimex lectularius L., expanded in temperate regions of its original distribution, the tropical bedbug, C. hemipterus (F.), increased its abundance in warmer regions, where it also had been historically distributed. However, C. hemipterus has recently been observed to be expanding to other areas, e.g. North Australia, Middle East, the United States and Russia. In other parts of Europe, few sporadic and ephemeral introductions of C. hemipterus were recorded until recently. We conducted an extensive sampling of European bedbug populations starting in 2002 and found that C. hemipterus has recently become locally established. Among 566 examined infestations, nearly all of which involved C. lectularius, C. hemipterus occurred in six infestations collected since 2019. In at least three cases, the social background of inhabitants of the infested properties indicated that tropical bedbugs likely spread within local communities. Using cytochrome oxidase subunit I, we linked five of the infestations to the most common haplotype found globally, and one to an African haplotype. In all infestations, we observed two kdr‐associated mutations in the sodium channel gene, which are also commonly found across the world.

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“…The eradication was largely due to widespread application of chlorinated hydrocarbons such as dichlorodiphenyltrichloroethane (DDT) and the subsequent use of other insecticides such as synthetic pyrethroids, organophosphates and carbamates 8 . Resistance to insecticides and increased rates of global travel are often regarded as contributing factors that drive the worldwide resurgence of bed bug populations 9,10 …”

Section: Introductionmentioning

confidence: 99%

Cuticle thickening associated with fenitrothion and imidacloprid resistance and influence of voltage‐gated sodium channel mutations on pyrethroid resistance in the tropical bed bug, Cimex hemipterus

Soh

Singham

2021

Pest Management Science

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Background The common bed bug, Cimex lectularius L., and the tropical bed bug, Cimex hemipterus (F.), are now widely regarded as important public health pests following their rapid global resurgence, largely due to insecticide resistance and an increased rate of global travel. The insecticide resistance mechanisms are well documented in C. lectularius, however, only one mechanism is validated in C. hemipterus thus far. This demands further understanding on the resistance mechanisms involved in C. hemipterus. Results Here, we identified differences in resistance to fenitrothion (organophosphate) and imidacloprid (neonicotinoid) related cuticle thickness in C. hemipterus. There is evidence of a possible association between cuticle thickness and resistance, but the association can be tenuous, likely because resistance is multifactorial in C. hemipterus. We also discovered a novel T1011 residue in domain IIS6 of the voltage‐gated sodium channel that likely enhanced susceptibility to deltamethrin (pyrethroid) despite the presence of a L1014F mutation known to confer pyrethroid resistance in C. hemipterus. Our findings also confirmed that the M918I mutation enhanced resistance to pyrethroid when present with the L1014F mutation, which was consistent with a super‐kdr phenotype, as reported previously. Multiple resistance mechanisms can be found within a single C. hemipterus population, and the presence of both M918I + L1014F mutations likely masked the influence of cuticle thickness in conferring resistance against deltamethrin. The elevated metabolic enzyme activities in some strains were not necessarily associated with increased insecticide resistance. Conclusion This study has enhanced our understanding on the penetration resistance mechanism and target site insensitivity of sodium channels in C. hemipterus.

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Insecticide Resistance

Cited by 23 publications

References 59 publications

Assessment of Tropical Bed Bug (Hemiptera: Cimicidae), Infestations in Cape Coast, Ghana: Household Control Practices and Efficacy of Commercial Insecticides and Long-Lasting Insecticidal Nets Against Field Bed Bugs

Assessment of Tropical Bed Bug (Hemiptera: Cimicidae), Infestations in Cape Coast, Ghana: Household Control Practices and Efficacy of Commercial Insecticides and Long-Lasting Insecticidal Nets Against Field Bed Bugs

Early evidence of establishment of the tropical bedbug (Cimex hemipterus) in Central Europe

Cuticle thickening associated with fenitrothion and imidacloprid resistance and influence of voltage‐gated sodium channel mutations on pyrethroid resistance in the tropical bed bug, Cimex hemipterus

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