Chemical Cues for Malaria Vectors Oviposition Site Selection: Challenges and Opportunities

Himeidan, Yousif E.; Temu, Emmanuel A.; Rayah, El Amin El; Munga, Stephen; Kweka, Eliningaya J.

doi:10.1155/2013/685182

Cited by 24 publications

(19 citation statements)

References 86 publications

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“…These variations may be due to the differences in the quality of water, that is, the physical, chemical and biological compositions of the water in the various habitats [25–27]. …”

Section: Discussionmentioning

confidence: 99%

Diversity in breeding sites and distribution of Anopheles mosquitoes in selected urban areas of southern Ghana

et al. 2017

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Background Anopheles vectors of malaria are supposedly less common in urban areas as a result of pollution, but there is increasing evidence of their adaptation to organically polluted water bodies. This study characterized the breeding habitats of Anopheles mosquitoes in the two major urban areas in southern Ghana; Accra (AMA) and Sekondi-Takoradi (STMA) Metropolitan Areas, during dry and wet seasons.Methods Anopheles mosquito larvae were sampled using standard dipping methods to determine larval densities. The origin, nature and stability of 21 randomly selected sites were observed and recorded. Mosquito larvae were reared to adults and Anopheles species identified by both morphological and molecular means.ResultsSixty-six percent of Anopheles habitats were permanent and 34% temporal, and 74.5% man-made while 25.5% were natural. Puddles and urban farm sites accounted for over 51% of all Anopheles mosquitoes sampled. The mean larval densities among the habitat types was highest of 13.7/dip for puddles and lowest of 2.3/dip for stream/river, and the variation between densities were significant (P = 0.002). The mean larval densities were significantly higher in the wet season than in the dry season for the two study areas combined (P = 0.0191) and AMA (P = 0.0228). Over 99% of the 5,802 morphologically identified Anopheles species were An. gambiae (s.l.) of which more than 99% of the studied 898 were An. coluzzii (62%) and An. gambiae (s.s.) (34%). Urban farms, puddles, swamps and ditches/ dugouts accounted for approximately 70% of all An. coluzzii identified. Conversely, drains, construction sites, streams/rivers and “others” contributed 80% of all An. gambiae (s.s.) sampled. The wet season had significantly higher proportion of Anopheles larvae compared to the dry season (Z = 8.3683, P < 0.0001). Also, the proportion of Anopheles mosquitoes produced by permanent breeding sites was 61.3% and that of temporary sites was 38.7%.ConclusionTaken together, the data suggest that man-made and/ or permanent habitats were the main contributors to Anopheles larval populations in the cities and that regulation of the anthropogenic processes that lead to development of breeding places and proper environmental management can drastically reduce mosquito breeding sites in urban areas of Ghana.Electronic supplementary materialThe online version of this article (doi:10.1186/s13071-016-1941-3) contains supplementary material, which is available to authorized users.

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“…These variations may be due to the differences in the quality of water, that is, the physical, chemical and biological compositions of the water in the various habitats [25–27]. …”

Section: Discussionmentioning

confidence: 99%

Diversity in breeding sites and distribution of Anopheles mosquitoes in selected urban areas of southern Ghana

et al. 2017

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“…Emanations from humans or oviposition sites consist of complex blends of various chemical compounds (Dormont et al, 2013;Himeidan et al, 2013). Thus, the first step to finding targets relevant to A. gambiae is to register a blend of volatile compounds with no need to discriminate distinct odorous compounds.…”

Section: Discussionmentioning

confidence: 99%

Co-expression of six tightly clustered odorant receptor genes in the antenna of the malaria mosquito Anopheles gambiae

et al. 2015

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“…The oviposition behavior of An. gambiae mosquitoes can be affected by a variety of factors, as demonstrated by several studies [21][22][23][24][25][26][27][28]. In the core model, all larvae are categorized into different age groups, or cohorts, according to the common age of the cohort.…”

Section: Aquatic Habitats and Ovipositionmentioning

confidence: 99%

Landscape Epidemiology Modeling Using an Agent-Based Model and a Geographic Information System

Arifin

Pitts

et al. 2015

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A landscape epidemiology modeling framework is presented which integrates the simulation outputs from an established spatial agent-based model (ABM) of malaria with a geographic information system (GIS). For a study area in Kenya, five landscape scenarios are constructed with varying coverage levels of two mosquito-control interventions. For each scenario, maps are presented to show the average distributions of three output indices obtained from the results of 750 simulation runs. Hot spot analysis is performed to detect statistically significant hot spots and cold spots. Additional spatial analysis is conducted using ordinary kriging with circular semivariograms for all scenarios. The integration of epidemiological simulation-based results with spatial analyses techniques within a single modeling framework can be a valuable tool for conducting a variety of disease control Land 2015, 4 379 activities such as exploring new biological insights, monitoring epidemiological landscape changes, and guiding resource allocation for further investigation.

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Chemical Cues for Malaria Vectors Oviposition Site Selection: Challenges and Opportunities

Cited by 24 publications

References 86 publications

Diversity in breeding sites and distribution of Anopheles mosquitoes in selected urban areas of southern Ghana

Diversity in breeding sites and distribution of Anopheles mosquitoes in selected urban areas of southern Ghana

Co-expression of six tightly clustered odorant receptor genes in the antenna of the malaria mosquito Anopheles gambiae

Landscape Epidemiology Modeling Using an Agent-Based Model and a Geographic Information System

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