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

The cotton producers from southern Mato Grosso are currently experiencing control failure with the use of the use of insecticides against the cotton boll weevil Anthonomus grandis Boheman, the main pest species of this commodity. Therefore, the present study was designed to survey insecticide resistance and the associated likelihood of control failure among boll weevil populations in the region. Ten insect populations were sampled during the 2016/2017 season and subjected to time-mortality (contact) bioassays in glass vials impregnated with dried insecticide residues at their respective label rates. The three insecticides most frequently used in the region were surveyed: the organophosphate malathion and the pyrethroids beta-cyfluthrin and zeta-cypermethrin. The survival curves showed estimates of the respective median survival time (LT50) for each combination of insecticide and insect copulation. However, there were no significant differences in susceptibility among populations. The estimates of control failure likelihood for each compound at their respective label rates also indicated negligible risk of control failure with their use. These findings are consistent with time-mortality results indicating the lack of insecticide resistant populations at the surveyed sampling sites, suggesting that the reported field control failures result from other causes such as problems with insecticide application.

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

Journal of Pest Science ◽

10.1007/s10340-021-01445-5 ◽

2021 ◽

Author(s):

J. L. Vieira ◽

S. O. Campos ◽

G. Smagghe ◽

D. B. Fragoso ◽

J. A. F. Barrigossi ◽

...

Keyword(s):

Stink Bugs ◽

Control Failure ◽

And Control

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Cyantraniliprole susceptibility baseline, resistance survey and control failure likelihood in the coffee berry borer Hypothenemus hampei

Ecotoxicology and Environmental Safety ◽

10.1016/j.ecoenv.2020.110947 ◽

2020 ◽

Vol 203 ◽

pp. 110947

Author(s):

Nayara C.R. Costa ◽

Eduardo C.M. Picelli ◽

Fábio M.A. Silva ◽

Alfredo H.R. Gonring ◽

Raul Narciso C. Guedes ◽

...

Keyword(s):

Hypothenemus Hampei ◽

Coffee Berry ◽

Coffee Berry Borer ◽

Control Failure ◽

And Control

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Anopheles metabolic proteins in malaria transmission, prevention and control: a review

Parasites & Vectors ◽

10.1186/s13071-020-04342-5 ◽

2020 ◽

Vol 13 (1) ◽

Author(s):

Eunice Oluwatobiloba Adedeji ◽

Olubanke Olujoke Ogunlana ◽

Segun Fatumo ◽

Thomas Beder ◽

Yvonne Ajamma ◽

...

Keyword(s):

Insecticide Resistance ◽

Vector Control ◽

Malaria Transmission ◽

Control Strategies ◽

Parasite Development ◽

Potential Contribution ◽

Population Replacement ◽

Blood Digestion ◽

Significant Toxicity ◽

And Control

Abstract The increasing resistance to currently available insecticides in the malaria vector, Anopheles mosquitoes, hampers their use as an effective vector control strategy for the prevention of malaria transmission. Therefore, there is need for new insecticides and/or alternative vector control strategies, the development of which relies on the identification of possible targets in Anopheles. Some known and promising targets for the prevention or control of malaria transmission exist among Anopheles metabolic proteins. This review aims to elucidate the current and potential contribution of Anopheles metabolic proteins to malaria transmission and control. Highlighted are the roles of metabolic proteins as insecticide targets, in blood digestion and immune response as well as their contribution to insecticide resistance and Plasmodium parasite development. Furthermore, strategies by which these metabolic proteins can be utilized for vector control are described. Inhibitors of Anopheles metabolic proteins that are designed based on target specificity can yield insecticides with no significant toxicity to non-target species. These metabolic modulators combined with each other or with synergists, sterilants, and transmission-blocking agents in a single product, can yield potent malaria intervention strategies. These combinations can provide multiple means of controlling the vector. Also, they can help to slow down the development of insecticide resistance. Moreover, some metabolic proteins can be modulated for mosquito population replacement or suppression strategies, which will significantly help to curb malaria transmission.

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Shorter Path Design and Control for an Underactuated Satellite

International Journal of Aerospace Engineering ◽

10.1155/2017/8536732 ◽

2017 ◽

Vol 2017 ◽

pp. 1-9

Author(s):

Jung-Hyung Lee ◽

Donghoon Kim ◽

Jichul Kim ◽

Hwa-Suk Oh

Keyword(s):

Shortest Path ◽

Numerical Optimization ◽

Path Length ◽

Optimal Solutions ◽

Path Design ◽

Proper Number ◽

Control Failure ◽

Axis Rotation ◽

And Control ◽

Single Axis Rotation

In the event of a control failure on an axis of a spacecraft, a target attitude can be achieved by several sequential rotations around the remaining control axes. For a spacecraft actuating with wheels, the form of each submaneuver should be a pure single axis rotation since the failed axis should not be perturbed. The rotation path length in sequential submaneuvers, however, increases extremely but is short under normal conditions. In this work, it is shown that the path length is reduced dramatically by finding a proper number of sequential submaneuvers, especially for the target attitude rotation around the failed axis. A numerical optimization is suggested to obtain the shortest path length and the relevant number of maneuvers. Optimal solutions using the sequential rotation approach are confirmed by numerical simulations.

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Control failure likelihood and spatial dependence of insecticide resistance in the tomato pinworm, Tuta absoluta

Pest Management Science ◽

10.1002/ps.2131 ◽

2011 ◽

Vol 67 (8) ◽

pp. 913-920 ◽

Cited By ~ 148

Author(s):

Gerson A Silva ◽

Marcelo C Picanço ◽

Leandro Bacci ◽

André Luiz B Crespo ◽

Jander F Rosado ◽

...

Keyword(s):

Insecticide Resistance ◽

Spatial Dependence ◽

Tuta Absoluta ◽

Control Failure ◽

Tomato Pinworm

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High resistance to insect growth disruptors and control failure likelihood in Brazilian populations of the tomato pinworm Tuta absoluta

Phytoparasitica ◽

10.1007/s12600-021-00895-y ◽

2021 ◽

Author(s):

Jefferson Elias Silva ◽

Wellington Marques Silva ◽

Tadeu Barbosa Martins Silva ◽

Mateus Ribeiro Campos ◽

Alberto Belo Esteves Filho ◽

...

Keyword(s):

High Resistance ◽

Tuta Absoluta ◽

Insect Growth ◽

Control Failure ◽

And Control ◽

Tomato Pinworm ◽

Brazilian Populations

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Surveillance, insecticide resistance and control of an invasive Aedes aegypti (Diptera: Culicidae) population in California

F1000Research ◽

10.12688/f1000research.8107.3 ◽

2016 ◽

Vol 5 ◽

pp. 194 ◽

Cited By ~ 8

Author(s):

Anthony J. Cornel ◽

Jodi Holeman ◽

Catelyn C. Nieman ◽

Yoosook Lee ◽

Charles Smith ◽

...

Keyword(s):

Aedes Aegypti ◽

Insecticide Resistance ◽

Mosquito Species ◽

Residential Areas ◽

Mosquito Abundance ◽

New Locations ◽

New Formulation ◽

A Site ◽

Bg Sentinel ◽

And Control

The invasion and subsequent establishment in California of Aedes aegypti in 2013 has created new challenges for local mosquito abatement and vector control districts. Studies were undertaken to identify effective and economical strategies to monitor the abundance and spread of this mosquito species as well as for its control. Overall, BG Sentinel (BGS) traps were found to be the most sensitive trap type to measure abundance and spread into new locations. Autocidal-Gravid-Ovitraps (AGO-B), when placed at a site for a week, performed equally to BGS in detecting the presence of female Ae. aegypti. Considering operational cost and our findings, we recommend use of BGS traps for surveillance in response to service requests especially in locations outside the known infestation area. We recommend AGO-Bs be placed at fixed sites, cleared and processed once a week to monitor mosquito abundance within a known infestation area. Long-term high density placements of AGO-Bs were found to show promise as an environmentally friendly trap-kill control strategy. California Ae. aegypti were found to be homozygous for the V1016I mutation in the voltage gated sodium channel gene, which is implicated to be involved in insecticide resistance. This strain originating from Clovis, California was resistant to some pyrethroids but not to deltamethrin in bottle bio-assays. Sentinel cage ultra-low-volume (ULV) trials using a new formulation of deltamethrin (DeltaGard®) demonstrated that it provided some control (average of 56% death in sentinel cages in a 91.4 m spray swath) after a single truck mounted aerial ULV application in residential areas.

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Surveillance, insecticide resistance and control of an invasive Aedes aegypti (Diptera: Culicidae) population in California

F1000Research ◽

10.12688/f1000research.8107.1 ◽

2016 ◽

Vol 5 ◽

pp. 194 ◽

Cited By ~ 18

Author(s):

Anthony J. Cornel ◽

Jodi Holeman ◽

Catelyn C. Nieman ◽

Yoosook Lee ◽

Charles Smith ◽

...

Keyword(s):

Aedes Aegypti ◽

Insecticide Resistance ◽

Mosquito Species ◽

Residential Areas ◽

Mosquito Abundance ◽

New Locations ◽

New Formulation ◽

A Site ◽

Bg Sentinel ◽

And Control

The invasion and subsequent establishment in California of Aedes aegypti in 2013 has created new challenges for local mosquito abatement and vector control districts. Studies were undertaken to identify effective and economical strategies to monitor the abundance and spread of this mosquito species as well as for its control. Overall, BG Sentinel (BGS) traps were found to be the most sensitive trap type to measure abundance and spread into new locations. Autocidal-Gravid-Ovitraps (AGO-B), when placed at a site for a week, performed equally to BGS in detecting the presence of female Ae. aegypti. Considering operational cost and our findings, we recommend use of BGS traps for surveillance in response to service requests especially in locations outside the known infestation area. We recommend AGO-Bs be placed at fixed sites, cleared and processed once a week to monitor mosquito abundance within a known infestation area. Long-term high density placements of AGO-Bs were found to show promise as an environmentally friendly trap-kill control strategy. California Ae. aegypti were found to be homozygous for the V1016I mutation in the voltage gated sodium channel gene, which is implicated to be involved in insecticide resistance. This strain originating from Clovis, California was resistant to some pyrethroids but not to deltamethrin in bottle bio-assays. Sentinel cage ultra-low-volume (ULV) trials using a new formulation of deltamethrin (DeltaGard®) demonstrated that it provided some control (average of 56% death in sentinel cages in a 91.4 m spray swath) after a single truck mounted aerial ULV application in residential areas.

Download Full-text