Entomological Survey Confirms Changes in Mosquito Composition and Abundance in Senegal and Reveals Discrepancies among Results by Different Host-Seeking Female Traps
Mosquitoes-borne diseases are major public health issues particularly in Africa. Vector control interventions and human-made environmental/climatic changes significantly affect the distribution and abundance of vector species. We carried out an entomological survey targeting host-seeking mosquitos i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/12/8/692 |
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| author | El Hadji Malick Ngom Chiara Virgillito Mattia Manica Roberto Rosà Verena Pichler Noemi Sarleti Isseu Kassé Mawlouth Diallo Alessandra della Torre Ibrahima Dia Beniamino Caputo |
| author_facet | El Hadji Malick Ngom Chiara Virgillito Mattia Manica Roberto Rosà Verena Pichler Noemi Sarleti Isseu Kassé Mawlouth Diallo Alessandra della Torre Ibrahima Dia Beniamino Caputo |
| author_sort | El Hadji Malick Ngom |
| collection | DOAJ |
| description | Mosquitoes-borne diseases are major public health issues particularly in Africa. Vector control interventions and human-made environmental/climatic changes significantly affect the distribution and abundance of vector species. We carried out an entomological survey targeting host-seeking mosquitos in two different ecological contexts—coastal and inland—in Senegal, by CDC-light and BG-sentinel traps. Results show high predominance of <i>Culex quinquefasciatus</i> (90%) and of <i>Anopheles arabiensis</i> within malaria vectors (46%), with mean numbers of females/trap/nights =8 and <1, respectively, reinforcing previous evidence of changes in species composition and abundance, highlighting thus increasing risk of transmission of filariasis and emerging arboviruses in the Senegambia region. From the methodological perspective, results show a higher specificity of BG traps for <i>Cx. quinquefasciatus</i> and of CDC traps for <i>An. gambiae</i> s.l. and highlight that, despite both traps target the host-seeking fraction of the population, they provide different patterns of species abundance, temporal dynamics and host-seeking activity, leading to possible misinterpretation of the species bionomics. This draws attention to the need of taking into account trapping performance, in order to provide realistic quantification of the number of mosquitoes per units of space and time, the crucial parameter for evaluating vector–human contact, and estimating risk of pathogen transmission. |
| first_indexed | 2024-03-10T08:42:56Z |
| format | Article |
| id | doaj.art-72ae3bd902e5437ab039c3a7f2f5a454 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-10T08:42:56Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-72ae3bd902e5437ab039c3a7f2f5a4542023-11-22T08:07:08ZengMDPI AGInsects2075-44502021-07-0112869210.3390/insects12080692Entomological Survey Confirms Changes in Mosquito Composition and Abundance in Senegal and Reveals Discrepancies among Results by Different Host-Seeking Female TrapsEl Hadji Malick Ngom0Chiara Virgillito1Mattia Manica2Roberto Rosà3Verena Pichler4Noemi Sarleti5Isseu Kassé6Mawlouth Diallo7Alessandra della Torre8Ibrahima Dia9Beniamino Caputo10Medical Zoology Pole, Institut Pasteur de Dakar, Dakar 12500, SenegalDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, ItalyDepartment of Biodiversity and Molecular Ecology, Edmund Mach Foundation, 38098 San Michele all’Adige, ItalyDepartment of Biodiversity and Molecular Ecology, Edmund Mach Foundation, 38098 San Michele all’Adige, ItalyDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, ItalyDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, ItalyMedical Zoology Pole, Institut Pasteur de Dakar, Dakar 12500, SenegalMedical Zoology Pole, Institut Pasteur de Dakar, Dakar 12500, SenegalDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, ItalyMedical Zoology Pole, Institut Pasteur de Dakar, Dakar 12500, SenegalDepartment of Public Health and Infectious Diseases, Sapienza University of Rome, 00185 Rome, ItalyMosquitoes-borne diseases are major public health issues particularly in Africa. Vector control interventions and human-made environmental/climatic changes significantly affect the distribution and abundance of vector species. We carried out an entomological survey targeting host-seeking mosquitos in two different ecological contexts—coastal and inland—in Senegal, by CDC-light and BG-sentinel traps. Results show high predominance of <i>Culex quinquefasciatus</i> (90%) and of <i>Anopheles arabiensis</i> within malaria vectors (46%), with mean numbers of females/trap/nights =8 and <1, respectively, reinforcing previous evidence of changes in species composition and abundance, highlighting thus increasing risk of transmission of filariasis and emerging arboviruses in the Senegambia region. From the methodological perspective, results show a higher specificity of BG traps for <i>Cx. quinquefasciatus</i> and of CDC traps for <i>An. gambiae</i> s.l. and highlight that, despite both traps target the host-seeking fraction of the population, they provide different patterns of species abundance, temporal dynamics and host-seeking activity, leading to possible misinterpretation of the species bionomics. This draws attention to the need of taking into account trapping performance, in order to provide realistic quantification of the number of mosquitoes per units of space and time, the crucial parameter for evaluating vector–human contact, and estimating risk of pathogen transmission.https://www.mdpi.com/2075-4450/12/8/692Culex quinquefasciatusAnopheles gambiae complexAnopheles arabiensisAnopheles coluzziiCDC-light trapsBG-sentinel traps |
| spellingShingle | El Hadji Malick Ngom Chiara Virgillito Mattia Manica Roberto Rosà Verena Pichler Noemi Sarleti Isseu Kassé Mawlouth Diallo Alessandra della Torre Ibrahima Dia Beniamino Caputo Entomological Survey Confirms Changes in Mosquito Composition and Abundance in Senegal and Reveals Discrepancies among Results by Different Host-Seeking Female Traps Insects Culex quinquefasciatus Anopheles gambiae complex Anopheles arabiensis Anopheles coluzzii CDC-light traps BG-sentinel traps |
| title | Entomological Survey Confirms Changes in Mosquito Composition and Abundance in Senegal and Reveals Discrepancies among Results by Different Host-Seeking Female Traps |
| title_full | Entomological Survey Confirms Changes in Mosquito Composition and Abundance in Senegal and Reveals Discrepancies among Results by Different Host-Seeking Female Traps |
| title_fullStr | Entomological Survey Confirms Changes in Mosquito Composition and Abundance in Senegal and Reveals Discrepancies among Results by Different Host-Seeking Female Traps |
| title_full_unstemmed | Entomological Survey Confirms Changes in Mosquito Composition and Abundance in Senegal and Reveals Discrepancies among Results by Different Host-Seeking Female Traps |
| title_short | Entomological Survey Confirms Changes in Mosquito Composition and Abundance in Senegal and Reveals Discrepancies among Results by Different Host-Seeking Female Traps |
| title_sort | entomological survey confirms changes in mosquito composition and abundance in senegal and reveals discrepancies among results by different host seeking female traps |
| topic | Culex quinquefasciatus Anopheles gambiae complex Anopheles arabiensis Anopheles coluzzii CDC-light traps BG-sentinel traps |
| url | https://www.mdpi.com/2075-4450/12/8/692 |
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