Pyrethroid resistance of Helicoverpa armigera in Spain: current status and agroecological perspective

Torres‐Vila, Luis M.; Rodríguez‐Molina, M. C.; Lacasa-Plasencia, A; Bielza, Pablo; Rodrı́guez-del-Rincón, Ángel

doi:10.1016/s0167-8809(02)00003-8

Cited by 84 publications

(41 citation statements)

References 22 publications

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“…Resistance to diverse classes of pyrethroids has also been reported in populations from Benin (west Africa)71. In southern France, pyrethroid-resistance H. armigera was also reported7273, while populations resistant to pyrethroids, organophosphates and carbamates were identified in Spain7475. Significant reduced susceptibility to Cry1Ac has also been detected in some Chinese H. armigera populations76, and H. armigera larvae on Bt cotton (BG-II) which has cry1Ac + cry2Ab genes exists in India77.…”

Section: Discussionmentioning

confidence: 97%

Mitochondrial DNA and trade data support multiple origins of Helicoverpa armigera (Lepidoptera, Noctuidae) in Brazil

Tay

Walsh

Downes

et al. 2017

Sci Rep

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The Old World bollworm Helicoverpa armigera is now established in Brazil but efforts to identify incursion origin(s) and pathway(s) have met with limited success due to the patchiness of available data. Using international agricultural/horticultural commodity trade data and mitochondrial DNA (mtDNA) cytochrome oxidase I (COI) and cytochrome b (Cyt b) gene markers, we inferred the origins and incursion pathways into Brazil. We detected 20 mtDNA haplotypes from six Brazilian states, eight of which were new to our 97 global COI-Cyt b haplotype database. Direct sequence matches indicated five Brazilian haplotypes had Asian, African, and European origins. We identified 45 parsimoniously informative sites and multiple substitutions per site within the concatenated (945 bp) nucleotide dataset, implying that probabilistic phylogenetic analysis methods are needed. High diversity and signatures of uniquely shared haplotypes with diverse localities combined with the trade data suggested multiple incursions and introduction origins in Brazil. Increasing agricultural/horticultural trade activities between the Old and New Worlds represents a significant biosecurity risk factor. Identifying pest origins will enable resistance profiling that reflects countries of origin to be included when developing a resistance management strategy, while identifying incursion pathways will improve biosecurity protocols and risk analysis at biosecurity hotspots including national ports.

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Section: Discussionmentioning

confidence: 97%

Mitochondrial DNA and trade data support multiple origins of Helicoverpa armigera (Lepidoptera, Noctuidae) in Brazil

Tay

Walsh

Downes

et al. 2017

Sci Rep

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“…According to the calculated RRs that level of insecticide resistance was classified as reported by Torres-Vila et al [21]. Susceptible (RR=0-1), low resistance (RR=2-10), moderate resistance (RR=11-30), high resistance (RR=31-100).…”

Section: Discussionmentioning

confidence: 99%

Analysing resistance of different Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) strains to abamectin insecticide

Konuş¹

2014

Turk J Bioch

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Objective: Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), tomato leafminer, is an oligophagous insect. Larvae of T. absoluta can destroy especially tomato plants which lead to important yield loss in this economically valuable crop. Chemical control through insecticides has been a main method of controlling it in farming areas all over the world. However, continues application of certain registered insecticide such as abamectin might lead to resistance development in T. absoluta. The aim of this study was to monitor resistance status of abamectin insecticide and analyse resistance mechanisms of this insecticide in T. absoluta field populations from three districts of Turkey by using bioassay and biochemical methods. Methods: Bioassays and Biochemical assays. Results: Bioassay results showed that while Adana and Antalya strain of T. absoluta showed low resistance (3.03-and 2.3-fold) to abamectin insecticide, Ankara strain of T. absoluta was not resistant to abamectin (1.31-fold). Biochemical analysis displayed that CYP450-PNOD activities showed 2.55 and 1.95-fold increase compared to susceptible population in Adana and Antalya field populations, respectively. Furthermore, GST-CDNB activities showed statistically significant (p<0.05) 1.3-fold increase only in Adana population. Although EST-α-NA activities showed 3.41-fold increase only in Ankara field population, this field population did not display a significant resistancy to abamectin. Conclusion: Consequently, cytochrome P450 monooxygenase enzymes seemed to have a major role in abamectin resistance development in field populations of T. absoluta from Turkey. In addition, GSTs possibly have supportive role such as reducing oxidative stress that developed during metabolism of abamectin in resistant field populations of T. absoluta. Key Words: Abamectin, bioassay, CYP450 monooxygenases and glutathione S-transferases, Tuta absoluta. Conflict of Interest:The authors declare no conflict of interest. ÖZETAmaç: Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), domates güvesi, olifag bir böcektir. T. absoluta'nın larvaları özellikle domates bitkisine zarar verebilirler, böylece ekonomik olarak değerli bu üründe ciddi ürün kaybına neden olurlar. Tüm dünyadaki tarım alanlarında bu zararlının kontrolünde kullanılan ana yöntem insektisitler yoluyla yapılan kimyasal mücadeledir. Ancak, abamektin gibi ruhsatlı bazı ilaçların sürekli olarak kullanılması T. absoluta'da dayanıklılık gelişimine neden olabilmektedir. Bu çalışmanın amacı biyoanaliz ve biyokimyasal yöntemleri kullanarak Türkiye'nin üç farklı bölgesindeki T. absoluta tarla populasyonlarında abamektin dayanıklılığının tespiti ve bu dayanıklılığın mekanizmasını analiz etmektir. Metod: Biyoanalizler ve Biyokimyasal analizler. Bulgular: Biyoanaliz sonuçları T. absoluta'nın Adana ve Antalya türlerinde abamektin'e karşı düşük seviyede (3.03-ve 2.3-kat) dayanıklılık olduğunu gösterirken, Ankara türünde ise abamektin'e (1.31-kat) karşı dayanıklılık olmadığını gösterdi. Biyokimyasal analiz sonuçları ise CYP450...

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“…In addition, insecticide resistance of H . armigera has been reported to organophosphate, carbamate, and pyrethroid insecticides [22, 23]. …”

Section: Introductionmentioning

confidence: 99%

Battle in the New World: Helicoverpa armigera versus Helicoverpa zea (Lepidoptera: Noctuidae)

et al. 2016

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The corn earworm Helicoverpa zea (Boddie) and the old world bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) are allopatric species and occur in important agricultural crops. In maize, both species tend to infest the ear. The introduction of H. armigera in Brazil has created a new scenario, where these Helicoverpa species might cohabit and interact with one another, affecting the prevalence of each species in the agroecosystem, integrated pest management, and insect resistance management. In this study, larval occurrence and proportion of these species in maize was assessed in three regions of Brazil during three crop seasons. Interaction between the species was evaluated in interspecific and intraspecific scenarios under laboratory and field conditions. Helicoverpa zea was predominant in Rio Grande do Sul and the Planaltina, DF (central Brazil). In western Bahia, H. zea was predominant in the first collection, but approximately equal in number to H armigera in the second crop season. Both species exhibit high cannibalism/predation rates, and larval size was the primary factor for larval survival in the interaction studies. Larva of H. zea had higher survival when interacting with H. armigera, indicating that H. zea has an advantage in intraguild interactions with H. armigera in maize. Overall, the results from this study indicate that maize might play a role as a source of infestation or a sink of insecticide or Bt protein unselected H. armigera populations, depending on the H. zea:H. armigera intraguild competition and adult movement in the landscape.

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Pyrethroid resistance of Helicoverpa armigera in Spain: current status and agroecological perspective

Cited by 84 publications

References 22 publications

Mitochondrial DNA and trade data support multiple origins of Helicoverpa armigera (Lepidoptera, Noctuidae) in Brazil

Mitochondrial DNA and trade data support multiple origins of Helicoverpa armigera (Lepidoptera, Noctuidae) in Brazil

Analysing resistance of different Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) strains to abamectin insecticide

Battle in the New World: Helicoverpa armigera versus Helicoverpa zea (Lepidoptera: Noctuidae)

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