Area-wide survey of thiamethoxam resistance and control failure likelihood in the rice stink bugs Oebalus poecilus and O. ypsilongriseus

Vieira, J. L.; Campos, Silvério Oliveira; Smagghe, Guy; Fragoso, Daniel B.; Barrigossi, J. A. F.; Guedes, Raul Narciso C.

doi:10.1007/s10340-021-01445-5

Cited by 2 publications

(8 citation statements)

References 34 publications

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“…In addition, thiamethoxam, the main insecticide used against these stink bug species in Brazilian rice fields did not play relevant role in their distribution nor in their prevalence. 23 In this context, the predominance of one genetic cluster in the southern O. poecilus populations requires further investigation expanding the area surveyed and increasing the sampling sites and number of insects sampled.…”

Section: Discussionmentioning

confidence: 99%

“…The collected insects were stored in 90% ethanol for transport to the Federal University of Viçosa (UFV), where they were kept frozen at −20 °C until the DNA extraction. Each field population was circumscribed within a 5.7 km diameter collecting site, based on the recognition of the maximum distance at which the spatial dependence is detected 23 . Overlapping collecting sites were considered as a single population.…”

Section: Methodsmentioning

confidence: 99%

“…The populations of O. poecilus are broadly well-established in this region, 20,23,48,49 which likely serves as a source of individuals to other regions exhibiting a better determined gene pool. In addition, the main insecticide used against these stink bug species in Brazilian rice fields did not play relevant role in their distribution nor in their prevalence.…”

Section: Ypsilongriseusmentioning

confidence: 99%

“…Each field population was circumscribed within a 5.7 km diameter collecting site, based on the recognition of the maximum distance at which the spatial dependence is detected. 23 Overlapping collecting sites were considered as a single population. The sampling sites were georeferenced during the collection, and in the case of overlapping sites, the average of decimal coordinates of each location was used (Table 1).…”

Section: Insect Field Populations and Samplingmentioning

confidence: 99%

“…The invasive scenario in rice fields in the Americas, and particularly in the US and Brazil where the issue has attracted attention, remains largely neglected. The dominance and occurrence of these rice stink bugs are barely studied despite their rather considerable economic impact on yield and grain quality, 20–22 not to mention the impact of current management strategies used against them, where insecticide use prevails 23 . An early concern was about the role of the neonicotinoid thiamethoxan potentially mediating or contributing with the distribution and dominance of the rice stink bug species, 23 which proved unfounded but raised concerns regarding these species' genetic relationship and population structure.…”

Section: Introductionmentioning

confidence: 99%

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Disentangling a Neotropical pest species complex: genetic diversity and population structure of the native rice stink bug Oebalus poecilus and the invasive O. ypsilongriseus

Vieira

Oliveira

Barrigossi

et al. 2022

Pest Management Science

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BACKGROUND: A first step in any pest management initiative is recognizing the existing problemidentifying the pest species and its abundance and dispersal capacities. This is not simple and even more challenging when insidious (invasive) species are involved constituting a pest complex. Understanding a species' population diversity and structure can provide a better understanding of its adaptation and relative pest potential. Such is the need for the native rice stink bug Oebalus poecilus and the invasive O. ypsilongriseus in low and high flatlands of South America. RESULTS:The genetic structure differed between both rice stink bug species (F ST = 0.157, P = 0.001), where 84% of the overall genetic variability takes place within species and three genetic groups were recognized through Bayesian approach (K = 3). Oebalus poecilus exhibited slightly higher genetic diversity (H E = 0.253) and structuring (F ST = 0.050, P = 0.001) than the invasive O. ypsilongriseus (H E = 0.211; F ST = 0.038, P = 0.013). Nonetheless, only the former exhibited significant correlation between genetic and geographic distances (r = 0.48, P = 0.013).CONCLUSION: Despite the pointed peculiarities, the obtained results indicate overlap in both species' occurrence and similar genetic structure allowing for a compound problem to be dealt with as the complex requires managing without, as yet, a prevailing species or a niche specialization.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Ypsilongriseusmentioning

confidence: 99%

Section: Insect Field Populations and Samplingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Disentangling a Neotropical pest species complex: genetic diversity and population structure of the native rice stink bug Oebalus poecilus and the invasive O. ypsilongriseus

Vieira

Oliveira

Barrigossi

et al. 2022

Pest Management Science

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Insecticide Susceptibilities and Enzyme Activities of Four Stink Bug Populations in Mississippi, USA

Du,

Scheibener,

Zhu

et al. 2024

Insects

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In Mississippi, the Pentatomidae complex infesting soybean is primarily composed of Euschistus servus, Nezara viridula, Chinavia hilaris, and Piezodorus guildinii. This study employed spray bioassays to evaluate the susceptibilities of these stink bugs to seven commonly used formulated insecticides: oxamyl, acephate, bifenthrin, λ-cyhalothrin, imidacloprid, thiamethoxam, and sulfoxaflor. Stinks bugs were collected from soybeans in Leland, MS, USA during 2022 and 2023, as well as from wild host plants in Clarksdale, MS. There was no significant difference in the susceptibility of C. hilaris to seven insecticides between two years, whereas P. guildinii showed slightly increased susceptibility to neonicotinoids in 2023. Among all four stink bug species, susceptibility in 2022 was ranked as P. guildinii ≤ C. hilaris ≈ N. viridula, while in 2023, it was ranked as P. guildinii ≤ C. hilaris ≤ E. Servus. Additionally, populations of E. servus and P. guildinii collected from Clarksdale exhibited high tolerance to pyrethroids and neonicotinoids. Moreover, populations of E. servus and P. guildinii from SIMRU-2022 and Clarksdale-2023 showed elevated esterase and cytochrome P450 activity, respectively. These findings from spray bioassays and enzyme activity analyses provide a baseline for monitoring insecticide resistance in Pentatomidae and can guide insecticide resistance management strategies for Mississippi soybean.

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Area-wide survey of thiamethoxam resistance and control failure likelihood in the rice stink bugs Oebalus poecilus and O. ypsilongriseus

Cited by 2 publications

References 34 publications

Disentangling a Neotropical pest species complex: genetic diversity and population structure of the native rice stink bug Oebalus poecilus and the invasive O. ypsilongriseus

Disentangling a Neotropical pest species complex: genetic diversity and population structure of the native rice stink bug Oebalus poecilus and the invasive O. ypsilongriseus

Insecticide Susceptibilities and Enzyme Activities of Four Stink Bug Populations in Mississippi, USA

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