scholarly journals The Comparative Effectiveness of Adult Mosquito Sampling Methods Dealing With Odor-Baited Resting Box Traps in A Malaria-Endemic Area in Southern Iran

2021 ◽  
Author(s):  
Seyed Hassan Moosa Kazemi ◽  
Yousef Salari ◽  
Nariman Shahosseini ◽  
Sajad Fekri ◽  
Ahmad Raeisi ◽  
...  
Keyword(s):  
Culex Pipiens ◽  
Anopheles Stephensi ◽  
Sampling Methods ◽  
Adult Mosquito ◽  
Surveillance Systems ◽  
Malaria Endemic Area ◽  
Entomological Surveillance ◽  
Anopheles Fluviatilis ◽  
Mosquito Sampling ◽  
Bandar Abbas

Abstract Background Iran is under threat of a potential outbreak of mosquito-borne diseases, such as malaria, Dengue fever, Chikungunya, and Zika. The study aimed to determine the efficiency and sustainability of some adult mosquito sampling methods for designing effective entomological surveillance systems in a malaria endemic area. Methods Different rates of tap water, sugar, and yeast (Saccharomyces cerevisiae) were mixed to provide CO2. Anopheles stephensi and Culex pipiens Bandar Abbas strains were reared in the insectary and used for tests. On a lab scale, CO2 orientation experiments were performed using a Y-tube olfactometer on the insectary mosquito strains. In the field trial, human landing catches (HLC), artificial pit shelter (APS), CO2-baited trap (CO2-BT), human and cow odor baited resting boxes (HOBT, COBT), cow urine baited trap (CUBT), and colored un-baited box (UB) were studied in Bandar Abbas, Hormozgan Province, south of Iran. Mean densities of An. stephensi and Cx. pipiens insectary strains, which oriented to CO2 as flowrate of 170, and 300 mL/minute was significantly higher compared to the control group (P < 0.05). The black un-baited inbox resting traps significantly more collected wild mosquito species compared to others colored UB (P ˂ 0.05). Results A total of 2722 collected mosquitoes comprises Culex pipiens (48.56%), Anopheles fluviatilis s.l.(14.21%), An. stephensi (11.68%), Cx. theileri (9.95%), Aedes caspius (7.01%), An. dthali (6.79%) An. culicifacies s.l., An. pulcherrimus, An. sergentii,An. superpictus s.l., Cx. sitiens and, Ae.caspius less than 1%. Anopheles stephensi and, An.sergenti were most collected in CUBT. Anopheles fluviatilis s.l. and Ae. caspius were most found in HLC. Anopheles dthali, Cx. pipiens and, Cx. theileri were most abundant in APS. Conclusions Black CUBT and APS methods can be suggested as a perfect sampling strategy for malaria vectors surveillance. APS, and HLC methods were found useful to entomological surveillance systems for arboviral and filarial vector-borne diseases. Further modified sampling methods should be devoted to identify more effective sampling methods.

scholarly journals The Comparative Effectiveness of Adult Mosquito Sampling Methods Dealing With Odor-baited Resting Box Traps in a Malaria-endemic Area in Southern Iran

2021 ◽  
Author(s):  
Seyed Hassan Moosa Kazemi ◽  
Yousef Salari ◽  
Nariman Shahosseini ◽  
Sajad Fekri ◽  
Ahmad Raeisi ◽  
...  
Keyword(s):  
Culex Pipiens ◽  
Anopheles Stephensi ◽  
Sampling Methods ◽  
Adult Mosquito ◽  
Surveillance Systems ◽  
Malaria Endemic Area ◽  
Entomological Surveillance ◽  
Anopheles Fluviatilis ◽  
Mosquito Sampling ◽  
Bandar Abbas

Abstract BackgroundIran is under threat of a potential outbreak of mosquito-borne diseases, such as malaria, Dengue fever, Chikungunya, and Zika. The study aimed to determine the efficiency and sustainability of some adult mosquito sampling methods for designing effective entomological surveillance systems in a malaria endemic area.MethodsDifferent rates of tap water, sugar, and yeast (Saccharomyces cerevisiae) were mixed to provide CO2. Anopheles stephensi and Culex pipiens Bandar Abbas strains were reared in the insectary and used for tests. On a lab scale, CO2 orientation experiments were performed using a Y-tube olfactometer on the insectary mosquito strains. In the field trial, human landing catches (HLC), artificial pit shelter (APS), CO2-baited trap (CO2-BT), human and cow odor baited resting boxes (HOBT, COBT), cow urine baited trap (CUBT), and colored un-baited box (UB) were studied in Bandar Abbas, Hormozgan Province, south of Iran. Mean densities of An. stephensi and Cx. pipiens insectary strains, which oriented to CO2 as flowrate of 170, and 300 mL/minute was significantly higher compared to the control group (P < 0.05). The black un-baited inbox resting traps significantly more collected wild mosquito species compared to others colored UB (P ˂ 0.05). ResultsA total of 2722 collected mosquitoes comprises Culex pipiens (48.56%), Anopheles fluviatilis s.l.(14.21%), An. stephensi (11.68%), Cx. theileri (9.95%), Aedes caspius (7.01%), An. dthali (6.79%) An. culicifacies s.l. , An. pulcherrimus, An. sergentii,An. superpictus s.l., Cx. sitiens and, Ae.caspius less than 1%. Anopheles stephensi and, An.sergenti were most collected in CUBT. Anopheles fluviatilis s.l. and Ae. caspius were most found in HLC. Anopheles dthali, Cx. pipiens and, Cx. theileri were most abundant in APS. ConclusionsBlack CUBT and APS methods can be suggested as a perfect sampling strategy for malaria vectors surveillance. APS, and HLC methods were found useful to entomological surveillance systems for arboviral and filarial vector-borne diseases. Further modified sampling methods should be devoted to identify more effective sampling methods.

scholarly journals Assessment of the Effectiveness of Various Adult Mosquito Sampling Methods in a Thickly Populated Urban Slum Settlement - A study from Besant Nagar, Chennai, India

2020 ◽  
Author(s):  
Sangamithra Ravishankaran ◽  
Aswin Asokan ◽  
Johnson Amala Justin N A ◽  
Shalu Thomas ◽  
Vasna Joshua ◽  
...  
Keyword(s):  
Sampling Methods ◽  
Urban Slum ◽  
Adult Mosquito ◽  
Mosquito Sampling

Abstract The authors have withdrawn this preprint due to author disagreement.

scholarly journals Comparison of two adult mosquito sampling methods with human landing catches in south-central Ethiopia

2017 ◽  
Vol 16 (1) ◽  
Author(s):  
Oljira Kenea ◽  
Meshesha Balkew ◽  
Habte Tekie ◽  
Teshome Gebre-Michael ◽  
Wakgari Deressa ◽  
...  
Keyword(s):  
Sampling Methods ◽  
Adult Mosquito ◽  
Central Ethiopia ◽  
South Central ◽  
Mosquito Sampling ◽  
Human Landing

A comparative study of a new insecticide-impregnated fabric trap for monitoring adult mosquito populations resting indoors

1997 ◽  
Vol 87 (4) ◽  
pp. 397-403 ◽  
Author(s):  
P. K. Das ◽  
N. Sivagnaname ◽  
D. D. Amalraj
Keyword(s):  
Sampling Methods ◽  
Systematic Difference ◽  
Control Measures ◽  
Research Centre ◽  
Adult Mosquito ◽  
Bancroftian Filariasis ◽  
Anopheles Subpictus ◽  
Mosquito Sampling ◽  
Control Research ◽  
Parasite Infections

AbstractAn insecticide impregnated fabric (IIF) trap was developed at the Vector Control Research Centre, India. The mosquito sampling efficiency of this new trap, relative to hand catches of indoor resting mosquitoes, was evaluated in human dwellings and cattle sheds in a filariasis endemic area. The predominant species collected in human dwellings was Culex quinquefasciatus Say, a vector of bancroftian filariasis; whereas mosquitoes of the Culex vishnui group Theobald and Anopheles subpictus Grassi were caught in relatively greater numbers in cattle sheds. The numbers of mosquitoes in the trap were significantly correlated with the numbers caught in hand catches, and the numbers of mosquitoes collected per two traps per day in the three habitats during the study period were 1.79, 0.95 and 2.27x those collected by hand-catches. The number of occasions on which mosquitoes were detected by both methods was comparable. There was no evidence for a systematic difference in the age-structure and parasite distribution between the two sampling methods, suggesting that the trap is able to monitor both insect vectors and parasite infections. Therefore, the calculation of infection and infectivity rates necessary to monitor filariasis transmission should be possible from the IIF trap in filariasis endemic areas where control measures are being taken.

scholarly journals Monitoring Malaria Vector Control Interventions: Effectiveness of Five Different Adult Mosquito Sampling Methods

2013 ◽  
Vol 50 (5) ◽  
pp. 1140-1151 ◽  
Author(s):  
Shirley A. Onyango ◽  
Uriel Kitron ◽  
Peter Mungai ◽  
Eric M. Muchiri ◽  
Elizabeth Kokwaro ◽  
...  
Keyword(s):  
Vector Control ◽  
Malaria Vector ◽  
Sampling Methods ◽  
Adult Mosquito ◽  
Malaria Vector Control ◽  
Mosquito Sampling

Preparation, characterization and comparative toxicity of nanopermethrin against Anopheles stephensi and Culex pipiens

2021 ◽  
Author(s):  
Pedram Ebrahimnejhad ◽  
Seyed Hassan Nikookar ◽  
Mahmoud Fazeli‐Dinan ◽  
Seyed Payman Ziapour ◽  
Ali Farmoudeh ◽  
...  
Keyword(s):  
Culex Pipiens ◽  
Anopheles Stephensi ◽  
Comparative Toxicity

scholarly journals Assessing the Presence of Wuchereria bancrofti Infections in Vectors Using Xenomonitoring in Lymphatic Filariasis Endemic Districts in Ghana

2019 ◽  
Vol 4 (1) ◽  
pp. 49 ◽  
Author(s):  
Sellase Pi-Bansa ◽  
Joseph Osei ◽  
Worlasi Kartey-Attipoe ◽  
Elizabeth Elhassan ◽  
David Agyemang ◽  
...  
Keyword(s):  
Lymphatic Filariasis ◽  
Sampling Methods ◽  
Wuchereria Bancrofti ◽  
Filarial Infection ◽  
Chain Reaction ◽  
Mosquito Sampling ◽  
Human Landing ◽  
Monitoring And Surveillance ◽  
Polymerase Chain ◽  
New Research

Mass drug administration (MDA) is the current mainstay to interrupt the transmission of lymphatic filariasis. To monitor whether MDA is effective and transmission of lymphatic filariasis indeed has been interrupted, rigorous surveillance is required. Assessment of transmission by programme managers is usually done via serology. New research suggests that xenomonitoring holds promise for determining the success of lymphatic filariasis interventions. The objective of this study was to assess Wuchereria bancrofti infection in mosquitoes as a post-MDA surveillance tool using xenomonitoring. The study was carried out in four districts of Ghana; Ahanta West, Mpohor, Kassena Nankana West and Bongo. A suite of mosquito sampling methods was employed, including human landing collections, pyrethrum spray catches and window exit traps. Infection of W. bancrofti in mosquitoes was determined using dissection, conventional and real-time polymerase chain reaction and loop mediated isothermal amplification assays. Aedes, Anopheles coustani, An. gambiae, An. pharoensis, Culex and Mansonia mosquitoes were sampled in each of the four study districts. The dissected mosquitoes were positive for filarial infection using molecular assays. Dissected An. melas mosquitoes from Ahanta West district were the only species found positive for filarial parasites. We conclude that whilst samples extracted with Trizol reagent did not show any positives, molecular methods should still be considered for monitoring and surveillance of lymphatic filariasis transmission.

scholarly journals 1682. Dengue Fever Outbreak Investigation in Upper Egypt in 2015

2019 ◽  
Vol 6 (Supplement_2) ◽  
pp. S616-S616 ◽  
Author(s):  
Hamdi Mohammed. Ibrahim ◽  
Mahmoud Khalil ◽  
Mohamed Elsawy ◽  
Mohamed Samir. Ismail ◽  
Mostafa Alfishawy
Keyword(s):  
Infectious Diseases ◽  
Dengue Fever ◽  
Healthcare Providers ◽  
Control Measures ◽  
Fever Hospital ◽  
Adult Mosquito ◽  
Entomological Surveillance ◽  
Dramatic Decline ◽  
Rapid Control

Abstract Background Surveillance is the backbone of infectious diseases control but an outbreak of a new pathogen to a developing country may have devastating consequences given less prepared healthcare systems in such countries. In October 2015, there was a sharp rise of febrile illnesses reported in Dairot Fever Hospital which prompted the general department for fever hospitals in the Egyptian ministry of health (MOH) to constitute a scientific committee for field visit study in Dairot fever hospital. Methods The committee held meetings at Dairot fever hospital, educated local healthcare providers, examined all isolated patients and requested samples of 118 isolated patients to be sent to central laboratories of MOH. Entomological services were also part of the committee and surveillance was started in the affected area. Results Out of 118 samples, 28 came back positive for Dengue virus type 1 by ELISA and PCR. Entomological surveillance revealed the presence of Aedes aegypti larvae and adult mosquito at the sites where cases were living; consequently, entomological control measures for dengue vector were immediately set leading to a dramatic decline in the density of adult mosquito (from 23% to 0%) and larvae (from 25% to 0.5%). Conclusion The prompt response of the MOH in Egypt led to rapid control of Dengue fever outbreak but educating healthcare workers about possible imported infectious diseases would have halted the outbreak much earlier which shows the importance of Infectious Diseases training in developing countries. Disclosures All authors: No reported disclosures.

scholarly journals Insecticidal Activity of Bacillus laterosporus

1998 ◽  
Vol 64 (7) ◽  
pp. 2723-2725 ◽  
Author(s):  
Margarita V. Orlova ◽  
Tatyana A. Smirnova ◽  
Lyudmila A. Ganushkina ◽  
Victoria Y. Yacubovich ◽  
Roudolf R. Azizbekyan
Keyword(s):  
Aedes Aegypti ◽  
Larvicidal Activity ◽  
Insecticidal Activity ◽  
Culex Pipiens ◽  
Anopheles Stephensi ◽  
Crystalline Inclusions ◽  
Bacillus Laterosporus

ABSTRACT The Bacillus laterosporus strains 921 and 615 were shown to have toxicity for larvae of the mosquitoes Aedes aegypti, Anopheles stephensi, and Culex pipiens. The larvicidal activity of B. laterosporus was associated with spores and crystalline inclusions. Purified B. laterosporus 615 crystals were highly toxic for Aedes aegypti and Anopheles stephensi.

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