Annual bluegrass weevil,Listronotus maculicollis(Coleoptera: Curculionidae), insecticide resistance: Baseline susceptibility, cross-resistance patterns, and possible mechanisms

2016 ◽  
Author(s):  
Olga Kostromytska
Keyword(s):  
Insecticide Resistance ◽  
Cross Resistance ◽  
Annual Bluegrass ◽  
Listronotus Maculicollis ◽  
Resistance Patterns ◽  
Annual Bluegrass Weevil

Patterns of Insecticide Resistance in the Mosquitofish, Gambusia affinis

1969 ◽  
Vol 26 (9) ◽  
pp. 2395-2401 ◽  
Author(s):  
Dudley D. Culley Jr. ◽  
Denzel E. Ferguson
Keyword(s):  
Insecticide Resistance ◽  
High Resistance ◽  
Gambusia Affinis ◽  
Cross Resistance ◽  
Susceptible Population ◽  
State College ◽  
Resistant Population ◽  
Resistance Patterns ◽  
Population Patterns

The extent of insecticide resistance in a resistant population of mosquitofish (Gambusia affinis) from Belzoni, Mississippi, was compared with that of a susceptible population from State College, Mississippi, using 28 insecticides of five major groups. Results of 48-hr bioassays show that resistant mosquitofish have developed high resistance only to the toxaphene–endrin related insecticides, even though insecticides from other groups were heavily applied. Spray records for the Belzoni area and insecticide characteristics such as stability and toxicity aided in evaluating cross-resistance patterns in the resistant population. Patterns of resistance in mosquitofish are similar to those in many resistant arthropods.

scholarly journals Associated patterns of insecticide resistance in field populations of malaria vectors across Africa

2018 ◽  
Vol 115 (23) ◽  
pp. 5938-5943 ◽  
Author(s):  
Penelope A. Hancock ◽  
Antoinette Wiebe ◽  
Katherine A. Gleave ◽  
Samir Bhatt ◽  
Ewan Cameron ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Vector Control ◽  
Mosquito Species ◽  
Quantitative Information ◽  
Sub Saharan Africa ◽  
Malaria Vectors ◽  
Cross Resistance ◽  
Resistance Patterns ◽  
Geostatistical Models ◽  
Sub Saharan

The development of insecticide resistance in African malaria vectors threatens the continued efficacy of important vector control methods that rely on a limited set of insecticides. To understand the operational significance of resistance we require quantitative information about levels of resistance in field populations to the suite of vector control insecticides. Estimation of resistance is complicated by the sparsity of observations in field populations, variation in resistance over time and space at local and regional scales, and cross-resistance between different insecticide types. Using observations of the prevalence of resistance in mosquito species from the Anopheles gambiae complex sampled from 1,183 locations throughout Africa, we applied Bayesian geostatistical models to quantify patterns of covariation in resistance phenotypes across different insecticides. For resistance to the three pyrethroids tested, deltamethrin, permethrin, and λ-cyhalothrin, we found consistent forms of covariation across sub-Saharan Africa and covariation between resistance to these pyrethroids and resistance to DDT. We found no evidence of resistance interactions between carbamate and organophosphate insecticides or between these insecticides and those from other classes. For pyrethroids and DDT we found significant associations between predicted mean resistance and the observed frequency of kdr mutations in the Vgsc gene in field mosquito samples, with DDT showing the strongest association. These results improve our capacity to understand and predict resistance patterns throughout Africa and can guide the development of monitoring strategies.

scholarly journals Microsclerotial Granular Formulation of the Entomopathogenic Fungus Metarhizium brunneum and Its Combinations With Hydrogel and Imidacloprid Against the Annual Bluegrass Weevil (Coleoptera: Curculionidae)

2020 ◽  
Vol 113 (3) ◽  
pp. 1118-1128 ◽  
Author(s):  
Albrecht M Koppenhӧfer ◽  
Shaohui Wu ◽  
Olga S Kostromytska
Keyword(s):  
Entomopathogenic Fungus ◽  
Field Trials ◽  
Annual Bluegrass ◽  
Significant Control ◽  
Metarhizium Brunneum ◽  
Listronotus Maculicollis ◽  
Moist Sand ◽  
Field Efficacy ◽  
Neonicotinoid Insecticide ◽  
Annual Bluegrass Weevil

Abstract We determined the potential of the entomopathogenic fungus Metarhizium brunneum Petch (Hypocreales: Clavicipitaceae) F52 strain, and of a microsclerotial formulation, for the control of the annual bluegrass weevil, Listronotus maculicollis Kirby, which is a major pest of golf course turf in eastern North America with widespread insecticide resistance. Under laboratory conditions in Petri dishes with moist sand, the microsclerotia (23–46 kg granules/ha) caused high rates of mortality (85–100%) and infection (67–80%) in annual bluegrass weevil adults, but these levels did not occur until after 9 d at constant 26°C and 12–15 d at 14 h at 23°C and 10 h at 17°C. Production of viable conidia was marginally higher at the higher temperature regime (7.3 vs. 5.2 × 109 per gram of granules). Application of microsclerotia did not provide significant control and infection of adults in pots with grass in the greenhouse. In field trials targeting spring generation larvae, microsclerotia application (50–100 kg granules/ha) was ineffective, and coapplication of hydrogel to stabilize soil moisture did not increase larval control. A liquid M. brunneum F52 conidial formulation (4.75–9.5 × 1013 colony forming units/ha) provided up to 51% control. Combinations of M. brunneum F52 with the neonicotinoid insecticide imidacloprid provided additive control with up to 70% control with the conidial formulation. Field efficacy was probably limited by suboptimal temperatures for the fungus, and future tests need to examine whether higher control rates can be achieved in applications targeting the summer generation larvae.

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