Timing of Lambda-Cyhalothrin and Pyriproxyfen Barrier Treatments for Aedes albopictus (Diptera: Culicidae) Management

2019 ◽  
Vol 112 (3) ◽  
pp. 1337-1342 ◽  
Author(s):  
Gregory M Williams ◽  
Isik Unlu ◽  
Ilia Rochlin ◽  
Yi Wang ◽  
Randy Gaugler
Keyword(s):  
Aedes Albopictus ◽  
Lambda Cyhalothrin

scholarly journals Effects of Plant Species, Insecticide, and Exposure Time On the Efficacy Of Barrier Treatments Against Aedes albopictus

2018 ◽  
Vol 34 (4) ◽  
pp. 281-290 ◽  
Author(s):  
Benjamin E. McMillan ◽  
Jake E. Bova ◽  
Carlyle C. Brewster ◽  
Nicola T. Gallagher ◽  
Sally L. Paulson
Keyword(s):  
Plant Species ◽  
Aedes Albopictus ◽  
Adult Mortality ◽  
Miscanthus Sinensis ◽  
Chemical Treatments ◽  
Residual Toxicity ◽  
Japanese Honeysuckle ◽  
Lambda Cyhalothrin ◽  
Significant Difference ◽  
Over Time

ABSTRACT The effect of 5 plant species (arborvitae [Thuja occidentalis], boxwood [Buxus sp., Japanese honeysuckle [Lonicera japonica], rhododendron [Rhododendron sp.], and zebra grass [Miscanthus sinensis]) and 2 rates of lambda-cyhalothrin (3.13 ml and 6.25 ml active ingredient [AI]/liter) on knockdown (1 h) and mortality (24 h) of adult female Aedes albopictus was evaluated over an 8-wk period. A significant difference in knockdown was observed between the 2 rates of lambda-cyhalothrin on the 5 plant species, with the highest proportion of knockdown observed on zebra grass and rhododendron treated at the higher rate. Although mortality was ≥60% and 85% on the 5 plant species at the low and high rates of lambda-cyhalothrin, respectively, a significant difference between the 2 rates was only observed on boxwood and Japanese honeysuckle (P < 0.0001). We also tested the residual toxicity of 3 barrier sprays (lambda-cyhalothrin, bifenthrin, and deltamethrin) and evaluated the efficacy of a short (5-min) exposure to the insecticides on knockdown and mortality of adults over time. Significantly higher knockdown was observed with lambda-cyhalothrin compared with bifenthrin and deltamethrin (P < 0.0001). Mean knockdown was ∼98%, 92%, and 20% for lambda-cyhalothrin, bifenthrin, and deltamethrin, respectively, at week 2, and ∼98%, 0%, and 44%, respectively, 8 wk after treatments were applied. Adult mortality from the 3 chemical treatments, however, remained above 90% throughout the study. Lastly, the trends in mean proportion of knockdown were similar for mosquitoes exposed for either 5 min or 24 h to the 3 chemicals. An overall decline in mean mortality over time, however, was observed for mosquitoes exposed for 5 min to the chemicals compared with mortality from the 24-h exposure. The results suggest that lambda-cyhalothrin can be an effective barrier spray treatment against Ae. albopictus adults because its efficacy is limited little by plant species, it has long residual toxicity, and it is effective following only 5 min of exposure.

Evaluation of Lambda-Cyhalothrin Barrier Spray on Vegetation For Control of Aedes albopictus in China

2010 ◽  
Vol 26 (3) ◽  
pp. 346-348 ◽  
Author(s):  
Chun-Xiao Li ◽  
Zhong-Ming Wang ◽  
Yan-De Dong ◽  
Ting Yan ◽  
Ying-Mei Zhang ◽  
...  
Keyword(s):  
Aedes Albopictus ◽  
Lambda Cyhalothrin

Adulticide Resistance Status of Aedes albopictus (Diptera: Culicidae) in Sabah, Malaysia: A Statewide Assessment

2019 ◽  
Vol 56 (6) ◽  
pp. 1715-1725
Author(s):  
N M R Elia-Amira ◽  
C D Chen ◽  
V L Low ◽  
K W Lau ◽  
A Haziqah-Rashid ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Correlation Analysis ◽  
Aedes Albopictus ◽  
Mortality Rates ◽  
The Other ◽  
Cross Resistance ◽  
Lambda Cyhalothrin ◽  
East Malaysia ◽  
Statewide Assessment ◽  
Susceptibility Status

Abstract Resistance status of Aedes albopictus (Diptera: Culicidae) collected from Sabah, East Malaysia, was evaluated against four major classes of adulticides, namely pyrethroid, carbamate, organochlorine, and organophosphate. Adult bioassays conforming to WHO standard protocols were conducted to assess knockdown and mortality rates of Ae. albopictus. Among tested pyrethroid adulticides, only cyfluthrin, lambda-cyaholthrin, and deltamethrin were able to inflict total knockdown. The other adulticide classes mostly failed to cause any knockdown; the highest knockdown rate was only 18.33% for propoxur. With regards to mortality rate, Ae. albopictus was unanimously susceptible toward all pyrethroids, dieldrin, and malathion, but exhibited resistance toward bendiocarb, propoxur, dichlorodiphenyltrichloroethane, and fenitrothion. Additionally, correlation analysis demonstrated cross-resistance between bendiocarb and propoxur, and malathion and propoxur. In conclusion, this study has disclosed that pyrethroids are still generally effective for Aedes control in Sabah, Malaysia. The susceptibility status of Ae. albopictus against pyrethroids in descending order was cyfluthrin > lambda-cyhalothrin > deltamethrin > etofenprox > permethrin.

scholarly journals Aedes albopictus (Skuse) susceptibility status to agrochemical-insecticides used in durian plantating systems in southern Thailand

2020 ◽  
Author(s):  
Sakda Ratisupakorn ◽  
Sokchan Lorn ◽  
Nsa Dada ◽  
Aran Ngampongsai ◽  
Pawit Chaivisit ◽  
...  
Keyword(s):  
Population Density ◽  
Aedes Albopictus ◽  
Insect Pests ◽  
Field Application ◽  
Insecticide Susceptibility ◽  
Future Studies ◽  
Lambda Cyhalothrin ◽  
Southern Thailand ◽  
Study Sites ◽  
Susceptibility Status

ABSTRACTHigh rates of dengue, chikungunya, and zika morbidity occur in southern Thailand. The intensive application of insecticides in orchards could impact not only agricultural insect pests, but also non-target insects, such as mosquitoes, or non-target beneficial insects. In this study, the population density and insecticide susceptibility of Aedes albopictus populations to field application concentrations of four agrochemical insecticides – cypermethrin, chlorpyrifos, carbaryl, and imidacloprid were examined. Mosquito eggs were collected from durian cultivation sites in five provinces in southern Thailand and hatched and allowed to develop to the adult stage. The study sites were categorized into three groups based on insecticide application; intensive-application of insecticides (IA), less-application of insecticides (LA), and no application of insecticides (NA). Twenty ovitraps were deployed for at least three consecutive days at each study site to collect mosquito eggs and to determine the Ae. albopictus population density then WHO tube assays being used to determine the susceptibility of adult mosquitoes to selected insecticides. This study represents the first report of the agrochemical insecticide susceptibility status of Ae. albopictus collected from durian orchards in southern Thailand. The study found that the populations of Ae. albopictus were susceptible to chlorpyrifos, but showed reduced mortality following exposure to lambda-cyhalothrin, carbaryl, and imidacloprid which is suggestive of the existence of resistance. These findings provide new insights into mosquito insecticide resistance focusing on Ae. albopictus populations and has important implications for mosquito and mosquito-borne disease control in Thailand as well as providing baseline data on which future studies can develop.

Evaluation of Lambda-Cyhalothrin and Pyriproxyfen Barrier Treatments for Aedes albopictus (Diptera: Culicidae) Management in Urbanized Areas of New Jersey

2017 ◽  
Vol 55 (2) ◽  
pp. 472-476 ◽  
Author(s):  
Isik Unlu ◽  
Gregory M Williams ◽  
Ilia Rochlin ◽  
Devi Suman ◽  
Yi Wang ◽  
...  
Keyword(s):  
New Jersey ◽  
Aedes Albopictus ◽  
Lambda Cyhalothrin ◽  
Urbanized Areas

scholarly journals Impact of alphacypermethrin and lambda-cyhalothrin on immature survivorship of the dengue vector Aedes albopictus (Skuse) (Diptera : Culicidae) in a cemetery

1997 ◽  
Vol 48 (1) ◽  
pp. 59-64
Author(s):  
Sallehudin SULAIMAN ◽  
Zainol PAWANCHEE ◽  
ZULKIFLI ARIFIN ◽  
Ahmad WAHAB ◽  
John JEFFERY
Keyword(s):  
Aedes Albopictus ◽  
Dengue Vector ◽  
Lambda Cyhalothrin

scholarly journals Efficacy of Residual Pesticide–Treated Plant Saucers Against Aedes albopictus Larvae Under Semi–Field and Field Conditions

2020 ◽  
Vol 36 (2) ◽  
pp. 123-126
Author(s):  
Yongxing Jiang ◽  
Cason E. Bartz ◽  
Justin K. Baker
Keyword(s):  
Aedes Albopictus ◽  
Good Control ◽  
Field Conditions ◽  
Lambda Cyhalothrin ◽  
Residual Efficacy ◽  
Treated Plant ◽  
Mosquito Management ◽  
Water Holding ◽  
Container Mosquito ◽  
Considerable Period

ABSTRACT Plant saucers are ubiquitous, outdoor water-holding receptacles and are one of the most productive domestic mosquito habitats in the urban environment. Two kinds of commonly used plant saucers, clay and plastic, were manually treated with 3 residual insecticides, bifenthrin (Talstar® Professional), lambda-cyhalothrin (Lambda 9.7 CS), and tau-fluvalinate (Mavrik® Perimeter), at their maximum rates to assess their residual efficacy against Aedes albopictus larvae under semi–field and field conditions. Both clay and plastic saucers treated with bifenthrin and lambda-cyhalothrin provided weeks of control of 3rd instars of Ae. albopictus, whereas tau-fluvalinate provided only 1 day of control. Results from this study show that bifenthrin and lambda-cyhalothrin can provide good control of Ae. albopictus larvae for a considerable period of time and have great potential with regard to container mosquito management in the future.

scholarly journals Effects of Plant Substrate, Insecticide, and Blood Meal Status on the Efficacy of Barrier Treatments Against Aedes albopictus

2021 ◽  
Vol 37 (1) ◽  
pp. 20-27
Author(s):  
Benjamin E. McMillan ◽  
Brandi L. Benedict ◽  
Carlyle C. Brewster ◽  
Nicola T. Gallagher ◽  
Sally L. Paulson
Keyword(s):  
Plant Species ◽  
Aedes Albopictus ◽  
Blood Meal ◽  
Significant Interaction ◽  
Sampling Period ◽  
Mortality Rates ◽  
Limited Impact ◽  
Effective Barrier ◽  
Lambda Cyhalothrin

ABSTRACT The effects of 3 plant species (Cornus florida [dogwood], rhododendron X ‘Chionoides' [rhododendron], and Ilex opaca [American holly]), 4 insecticide treatments (Demand® CS [lambda-cyhalothrin] at 6.25 ml[AI]/liter; Talstar® Professional [bifenthrin] at 7.81 ml[AI]/liter, and Suspend® Polyzone® [deltamethrin] at 11.72 ml[AI]/liter, and water), and 2 physiological states (blood-fed and unfed) were evaluated for knockdown (1 h) and mortality (24 h) against female Aedes albopictus over an 8-wk sampling period. Analyses determined that there was a significant interaction between the tested plant species and the insecticides evaluated. Significant differences were likewise observed between the insecticide treatments for unfed Ae. albopictus females, with Demand CS demonstrating the highest knockdown and mortality rates (from >90% to >10% at wk 8 and >95% to ∼50% at wk 8, respectively), followed by Talstar Professional (from >75% to <10% at wk 2 and >90% to <10% at wk 2, respectively) and Suspend Polyzone (from >20% to <10% at wk 8 and >25% to >50% at wk 8, respectively). All treatments were no longer significant for knockdown or mortality at the end of the 8-wk timeframe. Significant differences were also observed between insecticide treatments for blood-fed Ae. albopictus females; Demand CS showed high knockdown and mortality rates (from 100% to ∼50% at wk 8 and 100% to >60% at wk 8, respectively), Suspend Polyzone rates were similar to Demand CS (from >80% to ∼50% at wk 8 and ∼90% to >65% at wk 8, respectively), and both were followed by Talstar Professional (from 100% to <10% at wk 4 and 100% to <20% at wk 4, respectively). All tested pyrethroid sprays showed a significant increase in effectiveness against recently blood-fed Ae. albopictus females, as compared to the unfed females. These results suggest that Demand CS can be used as an effective barrier spray against Ae. albopictus adults due to the limited impact of target foliage, its long-term efficacy under environmental conditions, and its continued effectiveness regardless of the blood meal status of the target mosquito.

Adulticide Resistance Status of Aedes albopictus (Diptera: Culicidae) in Sarawak State, Malaysia

2021 ◽  
Author(s):  
Koon Weng Lau ◽  
Chee Dhang Chen ◽  
Van Lun Low ◽  
Han Lim Lee ◽  
Abdul Aziz Azidah ◽  
...  
Keyword(s):  
Aedes Albopictus ◽  
Mortality Rates ◽  
The Other ◽  
World Health ◽  
Cross Resistance ◽  
Lambda Cyhalothrin ◽  
The World ◽  
Resistance Patterns ◽  
Health Organization ◽  
Susceptibility And Resistance

Abstract Resistance status of Aedes albopictus (Skuse) from 13 districts in Sarawak State, Malaysia, was evaluated against four major classes of adulticides, namely organochlorine, organophosphate, carbamate, and pyrethroid. Adult bioassays were performed according to the World Health Organization (WHO) standard protocols to assess knockdown and mortality rates of Ae. albopictus. Among the tested pyrethroids, only cyfluthrin was able to exhibit complete knockdown. On the other hand, different susceptibility and resistance patterns were observed in other adulticides. As for mortality rates, the mosquitoes were susceptible to cyfluthrin and dieldrin but exhibited various susceptibilities to other tested adulticides. Cross-resistance was discovered within and between tested insecticide classes. Significant correlations were found within pyrethroid and carbamate classes (i.e., bendiocab and propoxur, P = 0.036; etofenprox and permethrin, P = 0.000; deltamethrin and lambda-cyhalothrin, P = 0.822; deltamethrin and permethrin, P = 0.042). Additionally, insecticides belonging to different groups were also found significantly correlated (i.e., malathion and deltamethin, P = 0.019; malathion and bendiocarb, P = 0.008; malathion and propoxur, P = 0.007; and bendiocarb and deltamethrin, P = 0.031). In conclusion, cyfluthrin was effective for Aedes albopictus control in Sarawak State and these data may assist local authorities to improve future vector control operations.

scholarly journals Baseline Susceptibility Status of Florida Populations of Aedes aegypti (Diptera: Culicidae) and Aedes albopictus

2020 ◽  
Vol 57 (5) ◽  
pp. 1550-1559 ◽  
Author(s):  
Casey Parker ◽  
Daviela Ramirez ◽  
Carol Thomas ◽  
C Roxanne Connelly
Keyword(s):  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
Mosquito Control ◽  
Pyrethroid Resistance ◽  
Mosquito Species ◽  
Mosquito Vectors ◽  
Product Selection ◽  
Lambda Cyhalothrin ◽  
Susceptibility Status ◽  
Methods Of Control

Abstract Resistance to insecticides used to control mosquito vectors threatens the ability of mosquito-control organizations to protect public health. Aedes aegypti (Linnaeus) and Aedes albopictus (Skuse) are invasive species widely distributed throughout Florida and have been implicated in recent epidemics of Zika, dengue, and chikungunya viruses. Knowledge of the susceptibility status of these mosquito species to pyrethroid and organophosphate active ingredients (AIs) is needed to inform product selection and treatment decisions. The susceptibility of 37 Ae. aegypti and 42 Ae. albopictus populations from Florida was assessed in response to six pyrethroid and three organophosphate AIs using the CDC bottle bioassay method. Of all bioassays completed with a pyrethroid AI, 95% for Ae. aegypti and 30% for Ae. albopictus resulted in a resistant outcome. For organophosphate AIs, ~31% of assays conducted for both species were classified as resistant. The highest frequency of susceptibility for both species was observed in response to the organophosphate AI, naled. Lambda-cyhalothrin was the only pyrethroid to result in a susceptible status for Ae. aegypti and also had the highest frequency of susceptibility for Ae. albopictus. Resistance was detected to every AI tested for both Ae. aegypti and Ae. albopictus, but there was a pronounced trend of pyrethroid resistance in Florida populations of Ae. aegypti. The results of this work provide evidence for the need to decrease reliance on pyrethroids and to implement different methods of control of Ae. aegypti in Florida.

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