Potential for Utilization of Spatial Repellents in Mosquito Control Interventions

2018 ◽  
pp. 237-248
Author(s):  
Daniel L. Kline ◽  
Joyce Urban
Keyword(s):  
Mosquito Control ◽  
Spatial Repellents

scholarly journals Mosquito Control in Poland: Pro- and Anti-Environmental Activities

2014 ◽  
Vol 25 (4) ◽  
pp. 65-68
Author(s):  
Aleksandra Gliniewicz ◽  
Ewa Mikulak ◽  
Katarzyna Rydzanicz
Keyword(s):  
Public Education ◽  
Mosquito Control ◽  
Land Reclamation ◽  
Setting Time ◽  
Drainage Ditches ◽  
Complex Issue ◽  
Time Limits ◽  
Spatial Repellents ◽  
Green Areas ◽  
Larvae Development

Abstract Mosquito control in Poland is still dominated by the use of chemicals. Although it has been 13 years since the flood of the century, only in few cities and towns (Wroclaw, Gorzow Wielkopolski and Torun) various methods of mosquito control such as mapping of larvae development and setting time limits for the imagines occur-rence were developed. The problem of mosquito control is not only limited to adult insects, it is also much more a complex issue due to the use of insecticides in the environment that we would rather like to keep unchanged, with a diversity of co-existing species of plants and animals. In addition to eradication of larvae and adult insects, we should also: carry out actions modifying environment so that it becomes less friendly to mosquitoes (e.g. drying wet mead-ows as a result of land reclamation), protect places where people reside - with the use of insecticide lamps and spatial repellents, as well as catchers for aggressive female mosquitoes. Increasing the share of environmental management methods and public education on preventing to form and eliminating existing places of mosquito larvae development in urban green areas (parks, river overflow areas and drainage ditches) are still an undervalued element of integrated mosquito control in Poland.

scholarly journals INSECTICIDE EFFICACY OF SPATIAL REPELLENT COMPOUND-METOFLUTHRIN AGAINST SUSCEPTIBLE AND RESISTANT STRAINS OF AEDES AEGYPTI

2021 ◽  
Vol 68 (1) ◽  
pp. 86-91
Author(s):  
Emad I. M. Khater
Keyword(s):  
Mosquito Control ◽  
Laboratory Strain ◽  
Consumer Products ◽  
Cross Resistance ◽  
Pyrethroid Insecticides ◽  
Insecticide Efficacy ◽  
Spatial Repellents ◽  
Vector Management ◽  
Spatial Repellent ◽  
Arboviral Diseases

Spatial repellents (SR), include pyrethroid insecticides that are highly volatile at low temperatures and with high lethal activities against mosquitoes, mainly Aedes vectors of arboviral diseases. Of these SR, metofluthrin is widely used in various devices for repellent consumer products. This article reports the susceptibility status of Ae. aegypti Puerto Rico permethrin-resistant laboratory strain (PR) and Orlando susceptible laboratory strain (ORL) to metofluthrin and permethrin using the CDC glass bottle bioassay. The time-mortality relationships showed that the permethrin-resistant PR strain is highly resistant to both permethrin and metofluthrin compared to the susceptible ORL strain. The resistant ratio (RR) based on the killing time (KT) (KT50 -PR/KT50 -ORL) was 30- and 5- folds for permethrin and metofluthrin, respectively. The results also showed that the PR strain is less resistance to metofluthrin than to permethrin, with a three-fold RR (KT50 -PR-per/KT50 -PR-met). These results indicate the potential risk of developing cross-resistance of metofluthrin in permethrin-resistant mosquitoes. Integrated vector management in mosquito control should be considerate of how consumer products and field operations interact to accelerate cross resistance to pyrethroids.

Mosquito Control

BMJ ◽  
1941 ◽  
Vol 1 (4176) ◽  
pp. 86-87
Keyword(s):  
Mosquito Control

The Utilization of Aquatic Plants as Aids in Mosquito Control

1930 ◽  
Vol 64 (690) ◽  
pp. 56-86 ◽  
Author(s):  
Robert Matheson
Keyword(s):  
Aquatic Plants ◽  
Mosquito Control

scholarly journals Compensatory mechanisms in resistant Anopheles gambiae AcerKis and KdrKis neurons modulate insecticide-based mosquito control

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Stéphane Perrier ◽  
Eléonore Moreau ◽  
Caroline Deshayes ◽  
Marine El-Adouzi ◽  
Delphine Goven ◽  
...  
Keyword(s):  
Sodium Channel ◽  
Anopheles Gambiae ◽  
Calcium Concentration ◽  
Mosquito Control ◽  
Point Mutations ◽  
Resting Membrane Potential ◽  
Compensatory Mechanisms ◽  
Pyrethroid Insecticides

AbstractIn the malaria vector Anopheles gambiae, two point mutations in the acetylcholinesterase (ace-1R) and the sodium channel (kdrR) genes confer resistance to organophosphate/carbamate and pyrethroid insecticides, respectively. The mechanisms of compensation that recover the functional alterations associated with these mutations and their role in the modulation of insecticide efficacy are unknown. Using multidisciplinary approaches adapted to neurons isolated from resistant Anopheles gambiae AcerKis and KdrKis strains together with larval bioassays, we demonstrate that nAChRs, and the intracellular calcium concentration represent the key components of an adaptation strategy ensuring neuronal functions maintenance. In AcerKis neurons, the increased effect of acetylcholine related to the reduced acetylcholinesterase activity is compensated by expressing higher density of nAChRs permeable to calcium. In KdrKis neurons, changes in the biophysical properties of the L1014F mutant sodium channel, leading to enhance overlap between activation and inactivation relationships, diminish the resting membrane potential and reduce the fraction of calcium channels available involved in acetylcholine release. Together with the lower intracellular basal calcium concentration observed, these factors increase nAChRs sensitivity to maintain the effect of low concentration of acetylcholine. These results explain the opposite effects of the insecticide clothianidin observed in AcerKis and KdrKis neurons in vitro and in vivo.

scholarly journals Entomological survey for identification of Aedes larval breeding sites and their distribution in Chattogram, Bangladesh

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Md. Sahidur Rahman ◽  
Md. Omar Faruk ◽  
Sumiya Tanjila ◽  
Nur Mohammad Sabbir ◽  
Najmul Haider ◽  
...  
Keyword(s):  
Logistic Regression ◽  
Field Survey ◽  
Mosquito Control ◽  
Multiple Logistic Regression Analysis ◽  
Binary Logistic Regression ◽  
Breeding Sites ◽  
Entomological Survey ◽  
Different Types ◽  
Coconut Shells ◽  
Positive Properties

Abstract Background Studying the characteristics of Aedes mosquito habitats is essential to control the mosquito population. The objective of this study was to identify the breeding sites of Aedes larvae and their distribution in Chattogram, Bangladesh. We conducted an entomological survey in 12 different sub-districts (Thana) under Chattogram City, during the late monsoon (August to November) 2019. The presence of different wet containers along with their characteristics and immature mosquitoes was recorded in field survey data form. Larvae and/or pupae were collected and brought to the laboratory for identification. Results Different indices like house index, container index, and the Breteau index were estimated. The multiple logistic regression analysis was applied to identify habitats that were more likely to be positive for Aedes larvae/pupae. A total of 704 wet containers of 37 different types from 216 properties were examined, where 52 (7.39%) were positive for Aedes larvae or pupae. Tire, plastic buckets, plastic drums, and coconut shells were the most prevalent container types. The plastic group possessed the highest container productivity (50%) whereas the vehicle and machinery group was found as most efficient (1.83) in terms of immature Aedes production. Among the total positive properties, 8% were infested with Aedes aegypti, 2% with Aedes albopictus, and 1% contained both species Ae. aegypti and A. albopictus. The overall house index was 17.35%, the container index was 7%, and the Breteau index was 24.49. Containers in multistoried houses had significantly lower positivity compared to independent houses. Binary logistic regression represented that containers having shade were 6.7 times more likely to be positive than the containers without shade (p< 0.01). Conclusions These findings might assist the authorities to identify the properties, containers, and geographical areas with different degrees of risk for mosquito control interventions to prevent dengue and other Aedes-borne disease transmissions.

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