scholarly journals Susceptibility Status of Aedes aegypti to Insecticides in Colombia

10.5772/31243 ◽  
2012 ◽  
Author(s):  
Ronald Maestre
Keyword(s):  
Aedes Aegypti ◽  
Susceptibility Status

scholarly journals Risk of transmission of viral haemorrhagic fevers and the insecticide susceptibility status of aedes aegypti (linnaeus) in some sites in Accra, Ghana

2016 ◽  
Vol 50 (3) ◽  
pp. 136-141
Author(s):  
Takashi Suzuki ◽  
Joseph H Osei ◽  
Sasaki Sasaki ◽  
Michelle Adimazoya ◽  
Maxwell Appawu ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Emerging Diseases ◽  
Research Network ◽  
Insecticide Susceptibility ◽  
Aedes Mosquitoes ◽  
Human Landing ◽  
Survey Results ◽  
The University ◽  
University Of Ghana ◽  
Susceptibility Status

Background: Dengue is one of the emerging diseases that can mostly only be controlled by vector control since there is no vaccine for the disease. Although, Dengue has not been reported in Ghana, movement of people from neighbouring countries where the disease has been reported can facilitate transmission of the disease. Objective: This study was carried on the University of Ghana campus to determine the risk of transmission of viral haemorrhagic fevers and the insecticide susceptibility status of Ae. aegypti in some sites in Accra, Ghana. Design: Larval surveys were carried to inspect containers within households and estimate larval indices and adult Aedes mosquitoes were collected using human landing collection technique. WHO tube assays was used to assess the insecticide susceptibility status of Aedes mosquitoes. Results: Ae. aegypti were the most prevalent species, 75.5% and followed by Ae. vittatus, 23.9 %. Ae. albopictus and Ae. granti were in smaller numbers. Household index (HI), Breteau index (BI), and container index were calculated as 8.2%, 11.2% and 10.3% respectively with man-vector contact rate of 0.67 bites/man-hour estimated for the area. The mortalities recorded for Ae. aegypti from WHO tube assays was 88%, 94%, 80% and 99% for DDT (4%), deltamethrin (0.05%), lambdacyhalothrin (0.05%) and permethrin (0.75%) respectively.Conclusion: The survey results indicated that the density of Aedes mosquitoes was considered to be sufficient to promote an outbreak of viral haemorrhagic fevers on Legon Campus. Aedes mosquitoes were found to be resistant to DDT, deltamethrin and lamdacyhalothrin, but susceptible to permethrin. Funding: This study was supported in part by Japan Initiative for Global Research Network on Infectious Diseases(J-Grid).Keywords: Mosquitoes, Aedes aegypti, insecticide, risk, VHF transmission, Ghana

scholarly journals Uji resistensi nyamuk aedes aegypti terhadap sipermetrin 0,05% dipelabuhan Sungai Duku dan Bandara Sultan Syarif Kasim II Pekanbaru

2021 ◽  
Vol 1 (1) ◽  
pp. 16-21
Author(s):  
Dedes Handayani ◽  
Zuhirman Zuhirman ◽  
Ridwan Manda Putra
Keyword(s):  
Aedes Aegypti ◽  
Cross Sectional ◽  
Vector Borne Disease ◽  
Port Area ◽  
Independent Test ◽  
Vector Borne ◽  
Cross Sectional Design ◽  
Susceptibility Status

Control of use of chemical insecticides is one way to reduce the vector borne disease dengue hemmorrhagic fever (DHF)which are caused by the mosquito Aedes aegypti. This study aims to determine the susceptibility status of Aedes aegypti to cypermethrin insecticide, the differences susceptibility status in the Duku River Port and Sultan Syarif Kasim Airport Pekanbaru.This study was an descriptif study with cross-sectional design. Egg and Larva Aedes aegypti mosquito sample collected from ovitrap and larva-place from Duku River Port area and Sultan Syarif Kasim II Airport. Test of susceptibility to cypermethrin 0.05 % was done using impregnated paper refers to the WHO method, T independent test to considaret susceptibility status different both area.The result showed that Ae. aegypti in Duku River Port area and Sultan Syarif Kasim II airport areas have been toleran cypermethrin 0.05%.There is no difference in the susceptibility of cypermethrin 0,05% to the population of Aedes aegypti in Duku River Port and Sultan Syarif Kasim II Airport.

scholarly journals VULNERABILITY TEST OF Aedes aegypti LARVA AGAINST TEMEFOS IN WAY KANDIS, BANDAR LAMPUNG

2020 ◽  
Vol 7 (2) ◽  
pp. 73-78
Author(s):  
Nurul Hanifah ◽  
EMANTIS ROSA ◽  
Endah Seytaningrum
Keyword(s):  
Aedes Aegypti ◽  
Vector Control ◽  
Incidence Rate ◽  
Dengue Fever ◽  
Susceptibility Status

Aedes aegypti is a major vector of Dengue Fever (DHF) that is spread through mosquito bites. However, Bandar Lampung ranked 3rd out of 15 districts in Lampung Province with an IR (Incidence Rate) of 59.43. One way to reduce dengue cases is vector control. Temefos is commonly used as a chemical vector's control and it is possible can cause resistance to larvae. The information about Aedes Aegypty has not been widely known about larval of Aedes aegypty's susceptibility towards Temefos in Lampung Province. Therefore, this study aims to determine the susceptibility status of Aedes aegypti larvae towards Temefos in Way Kandis Village, Tanjung Senang Regency, Bandar Lampung. This research was conducted in December 2018 - February 2019. This study uses five different temefos concentrations, i.e ;0 mg / L concentration as control, 0.005 mg / L, 0.01 mg / L, 0.02 mg / L, and 0 , Each 03 mg / L was repeated in 4 times. Observations were made by calculating the number of larvae that fainted, died, and lived. The results show that the susceptibility of Aedes aegypti towards Temefos in Way Kandis Village, Tanjung Senang Regency, Bandar Lampung City, is categorized as susceptible in the concentration range of 0.005 - 0.03 mg / L.

scholarly journals Metode Monitoring Resistensi Populasi Aedes aegypti Dengan Penetapan Konsentrasi Diagnostik

2019 ◽  
Vol 20 (2) ◽  
pp. 105
Author(s):  
Vicka Kusuma Sari ◽  
Udi Tarwotjo ◽  
Mochamad Hadi
Keyword(s):  
Aedes Aegypti ◽  
Dengue Fever ◽  
Monitoring Method ◽  
Synthetic Insecticide ◽  
Validation Test ◽  
And Mathematics ◽  
Susceptibility Status ◽  
Aegypti Population ◽  
Main Factor

Aedes aegypti is the main vector of dengue fever disease. The most effective way to prevent dengue fever is cutting the spreading chain of dengue fever by controlling the vector with using conventional chemical insecticides. The used of insecticide intensively has became the main factor of resistance in Tembalang, then monitoring is needed to determine the change of A. aegypti susceptibility status against the insecticide. The aim of this research is to determine the sensitivity of A. aegypti population from five locations in Tembalang against pyrethroid synthetic insecticide, and to determine the validity of the diagnostic concentration as a method of monitoring resistance A. aegypti population in Tembalang. This research was conducted in Laboratory of Ecology and Biosystematics Department of Biology Faculty of Science and Mathematics, Diponegoro University Semarang. The procedure of this research were: larvae collection (A. aegypti), insect breeding test, sensitivity test including bioassay, determination of diagnostic concentration and validation. The result showed that the susceptibility level of five population was not significantly different since all populations are still susceptible, with the LC50 range between 0,0031-0,0043% and FR range between 1-1,39 (<4). The result of validation test of diagnostic concentration was 0,0038%, valid as a monitoring method of the resistance of A. aegypti population against pyrethroid synthetic insecticide in Tembalang because c2 value of the five population was lower than the c2 table (df = 1; α = 0,05) = 3,84. Keywords : A. aegypti, monitoring resistance, LC50, diagnostic concentration..

scholarly journals Susceptibility Status and Resistance Mechanisms in Permethrin-Selected, Laboratory Susceptible and Field-Collected Aedes aegypti from Malaysia

Insects ◽  
2018 ◽  
Vol 9 (2) ◽  
pp. 43 ◽  
Author(s):  
Rosilawati Rasli ◽  
Han Lee ◽  
Nazni Wasi Ahmad ◽  
Siti Fikri ◽  
Roziah Ali ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Resistance Mechanisms ◽  
Susceptibility Status

scholarly journals Aedes aegypti and Aedes albopictus (Diptera: Culicidae): coexistence and susceptibility to temephos, in municipalities with occurrence of dengue and differentiated characteristics of urbanization

2011 ◽  
Vol 44 (3) ◽  
pp. 300-305 ◽  
Author(s):  
Josiane Somariva Prophiro ◽  
Onilda Santos Silva ◽  
Jonny Edward Duque Luna ◽  
Carla Fernanda Piccoli ◽  
Luiz Alberto Kanis ◽  
...  
Keyword(s):  
Data Analysis ◽  
Aedes Aegypti ◽  
Aedes Albopictus ◽  
The State ◽  
Santa Catarina ◽  
Index Of Dispersion ◽  
Susceptibility Status

INTRODUCTION: The aim of the present study was to verify the coexistence between Aedes aegypti and Aedes albopictus populations in municipalities of the States of Paraná and Santa Catarina with different urbanization profiles where dengue occurs and evaluate their susceptibility to the organophosphate temephos. METHODS: The number of eggs per ovitrap were counted and incubated for hatching to identify the species. Data analysis of the populations was conducted to determine randomness and aggregation, using the variance-to-mean ratio (index of dispersion). Susceptibility to temephos was evaluated by estimation of the resistance ratios RR50 and RR95. Aedes aegypti samples were compared with the population Rockefeller and Aedes albopictus samples were compared with a population from the State of Santa Catarina and with the Rockefeller population. RESULTS: Coexistence between Aedes aegypti and Aedes albopictus and the aggregation of their eggs were observed at all the sites analyzed in the State of Paraná. CONCLUSIONS: All the Aedes aegypti populations from the State of Parana showed alteration in susceptibility status to the organophosphate temephos, revealing incipient resistance. Similarly, all the Aedes albopictus populations (States of Paraná and Santa Catarina) presented survival when exposed to the organophosphate temephos.

scholarly journals A Challenge for a Unique Dengue Vector Control Programme: Assessment of the Spatial Variation of Insecticide Resistance Status amongst Aedes aegypti and Aedes albopictus Populations in Gampaha District, Sri Lanka

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Rasika Dalpadado ◽  
Nayana Gunathilaka ◽  
Deepika Amarasinghe ◽  
Lahiru Udayanaga
Keyword(s):  
Sri Lanka ◽  
Aedes Aegypti ◽  
Insecticide Resistance ◽  
Vector Control ◽  
Aedes Albopictus ◽  
Rural Areas ◽  
Medical Officer ◽  
Public Health Problem ◽  
World Health ◽  
Susceptibility Status

Background. To date, dengue is considered an important public health problem in Sri Lanka. Irrational use of insecticides without evidence-based applications has primed the development of resistance in mosquito vectors. Method. The present study investigated the resistance status of Aedes aegypti and Aedes albopictus to commonly used insecticides in three selected Medical Officer of Health (MOH) areas (i.e., Attanagalla, Dompe, and Negombo) in Gampaha District, Western Province of Sri Lanka. Entomological surveys were performed using ovitraps and larval collections. Larval bioassays were carried out to determine the LC50, LC90, and LC95 and susceptibility status for organophosphate temephos, whereas adult bioassays were performed to test the 0.03% deltamethrin and 0.8% malathion susceptibility. Results. The study revealed that the temephos concentrations required to control Ae. aegypti (13.7-17.7 times) and Ae. albopictus (4.6-7.6 times) are higher than the diagnostic concentration (0.012 mg/L) proposed by the World Health Organization. The highest resistance levels were observed for both Ae. aegypti ( 14 ± 1.87 ) and Ae. albopictus ( 36 ± 1.87 ) collected from the Negombo MOH area. Therefore, the WHO recommended diagnostic concentration is no longer effective in controlling Ae. aegypti and Ae. albopictus larvae in these areas. Both the dengue vectors have evolved a high level of insecticide resistance to malathion and deltamethrin in the Gampaha District except Ae. albopictus mosquitoes in rural areas. Further, vectors in rural areas are indicated susceptible (>98%) to pyrethroids and emergence of resistance (<97%) for organophosphate insecticides. Conclusion. The results of this study warrant the vector management authorities on the proper application of insecticides and rational use in vector control. The susceptibility status of vector mosquitoes should be continuously monitored especially in dengue-endemic areas parallel to the routine surveillance programme. Further molecular studies are strongly recommended to determine the Knockdown Resistance (kdr) mutations among Aedes populations.

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