Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal
Background: Many zoonotic infectious diseases have emerged and re-emerged over the last two decades. There has been a significant increase in vector-borne diseases due to climate variations that lead to environmental changes favoring the development and adaptation of vectors. This study was carried out to improve knowledge of the ecology of mosquito vectors involved in the transmission of Rift Valley fever virus (RVFV) in Senegal. Methods: An entomological survey was conducted in three Senegalese agro-systems, Senegal River Delta (SRD), Senegal River Valley (SRV) and Ferlo, during the rainy season (July to November) of 2014 and 2015. Mosquitoes were trapped using CDC light traps set at ten sites for two consecutive nights during each month of the rainy season, for a total of 200 night-traps. Ecological indices were calculated to characterize the different populations of RVFV mosquito vectors. Generalized linear models with mixed effects were used to assess the influence of climatic conditions on the abundance of RVFV mosquito vectors. Results: A total of 355,408 mosquitoes belonging to 7 genera and 35 species were captured in 200 night-traps. RVFV vectors represented 89.02% of the total, broken down as follows: Ae. vexans arabiensis (31.29%), Cx. poicilipes (0.6%), Cx. tritaeniorhynchus (33.09%) and Ma. uniformis (24.04%). Comparison of meteorological indices (rainfall, temperature, relative humidity), abundances and species diversity indicated that there were no significant differences between SRD and SRV (P = 0.36) while Ferlo showed significant differences with both (P < 0.001). Mosquito collection increased significantly with temperature for Ae. vexans arabiensis (P < 0.001), Cx. tritaeniorhynchus (P = 0.04) and Ma. uniformis (P = 0.01), while Cx. poicilipes decreased (P = 0.003). Relative humidity was positively and significantly associated with the abundances of Ae. vexans arabiensis (P < 0.001), Cx. poicilipes (P = 0.01) and Cx. tritaeniorhynchus (P = 0.007). Rainfall had a positive and significant effect on the abundances of Ae. vexans arabiensis (P = 0.005). The type of biotope (temporary ponds, river or lake) around the trap points had a significant effect on the mosquito abundances (P < 0.001). Conclusions: In terms of species diversity, the SRD and SRV ecosystems are similar to each other and different from that of Ferlo. Meteorological indices and the type of biotope (river, lake or temporary pond) have significant effects on the abundance of RVFV mosquito vectors.
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Francia |
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Biblioteca del CIRAD Francia |
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L72 - Organismes nuisibles des animaux L73 - Maladies des animaux L20 - Écologie animale Culicidae dynamique des populations distribution géographique écologie animale vecteur de maladie Virus de la fièvre de la vallée du Rift biotope conditions météorologiques entomologie Enquête organismes nuisibles http://aims.fao.org/aos/agrovoc/c_2016 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_932 http://aims.fao.org/aos/agrovoc/c_29565 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_32767 http://aims.fao.org/aos/agrovoc/c_6970 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux L20 - Écologie animale Culicidae dynamique des populations distribution géographique écologie animale vecteur de maladie Virus de la fièvre de la vallée du Rift biotope conditions météorologiques entomologie Enquête organismes nuisibles http://aims.fao.org/aos/agrovoc/c_2016 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_932 http://aims.fao.org/aos/agrovoc/c_29565 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_32767 http://aims.fao.org/aos/agrovoc/c_6970 |
spellingShingle |
L72 - Organismes nuisibles des animaux L73 - Maladies des animaux L20 - Écologie animale Culicidae dynamique des populations distribution géographique écologie animale vecteur de maladie Virus de la fièvre de la vallée du Rift biotope conditions météorologiques entomologie Enquête organismes nuisibles http://aims.fao.org/aos/agrovoc/c_2016 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_932 http://aims.fao.org/aos/agrovoc/c_29565 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_32767 http://aims.fao.org/aos/agrovoc/c_6970 L72 - Organismes nuisibles des animaux L73 - Maladies des animaux L20 - Écologie animale Culicidae dynamique des populations distribution géographique écologie animale vecteur de maladie Virus de la fièvre de la vallée du Rift biotope conditions météorologiques entomologie Enquête organismes nuisibles http://aims.fao.org/aos/agrovoc/c_2016 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_932 http://aims.fao.org/aos/agrovoc/c_29565 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_32767 http://aims.fao.org/aos/agrovoc/c_6970 Biteye, Biram Fall, Assane Gueye Ciss, Mamadou Seck, Momar Talla Apolloni, Andrea Fall, Moussa Tran, Annelise Gimonneau, Geoffrey Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal |
description |
Background: Many zoonotic infectious diseases have emerged and re-emerged over the last two decades. There has been a significant increase in vector-borne diseases due to climate variations that lead to environmental changes favoring the development and adaptation of vectors. This study was carried out to improve knowledge of the ecology of mosquito vectors involved in the transmission of Rift Valley fever virus (RVFV) in Senegal. Methods: An entomological survey was conducted in three Senegalese agro-systems, Senegal River Delta (SRD), Senegal River Valley (SRV) and Ferlo, during the rainy season (July to November) of 2014 and 2015. Mosquitoes were trapped using CDC light traps set at ten sites for two consecutive nights during each month of the rainy season, for a total of 200 night-traps. Ecological indices were calculated to characterize the different populations of RVFV mosquito vectors. Generalized linear models with mixed effects were used to assess the influence of climatic conditions on the abundance of RVFV mosquito vectors. Results: A total of 355,408 mosquitoes belonging to 7 genera and 35 species were captured in 200 night-traps. RVFV vectors represented 89.02% of the total, broken down as follows: Ae. vexans arabiensis (31.29%), Cx. poicilipes (0.6%), Cx. tritaeniorhynchus (33.09%) and Ma. uniformis (24.04%). Comparison of meteorological indices (rainfall, temperature, relative humidity), abundances and species diversity indicated that there were no significant differences between SRD and SRV (P = 0.36) while Ferlo showed significant differences with both (P < 0.001). Mosquito collection increased significantly with temperature for Ae. vexans arabiensis (P < 0.001), Cx. tritaeniorhynchus (P = 0.04) and Ma. uniformis (P = 0.01), while Cx. poicilipes decreased (P = 0.003). Relative humidity was positively and significantly associated with the abundances of Ae. vexans arabiensis (P < 0.001), Cx. poicilipes (P = 0.01) and Cx. tritaeniorhynchus (P = 0.007). Rainfall had a positive and significant effect on the abundances of Ae. vexans arabiensis (P = 0.005). The type of biotope (temporary ponds, river or lake) around the trap points had a significant effect on the mosquito abundances (P < 0.001). Conclusions: In terms of species diversity, the SRD and SRV ecosystems are similar to each other and different from that of Ferlo. Meteorological indices and the type of biotope (river, lake or temporary pond) have significant effects on the abundance of RVFV mosquito vectors. |
format |
article |
topic_facet |
L72 - Organismes nuisibles des animaux L73 - Maladies des animaux L20 - Écologie animale Culicidae dynamique des populations distribution géographique écologie animale vecteur de maladie Virus de la fièvre de la vallée du Rift biotope conditions météorologiques entomologie Enquête organismes nuisibles http://aims.fao.org/aos/agrovoc/c_2016 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_932 http://aims.fao.org/aos/agrovoc/c_29565 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_32767 http://aims.fao.org/aos/agrovoc/c_6970 |
author |
Biteye, Biram Fall, Assane Gueye Ciss, Mamadou Seck, Momar Talla Apolloni, Andrea Fall, Moussa Tran, Annelise Gimonneau, Geoffrey |
author_facet |
Biteye, Biram Fall, Assane Gueye Ciss, Mamadou Seck, Momar Talla Apolloni, Andrea Fall, Moussa Tran, Annelise Gimonneau, Geoffrey |
author_sort |
Biteye, Biram |
title |
Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal |
title_short |
Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal |
title_full |
Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal |
title_fullStr |
Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal |
title_full_unstemmed |
Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal |
title_sort |
ecological distribution and population dynamics of rift valley fever virus mosquito vectors (diptera, culicidae) in senegal |
url |
http://agritrop.cirad.fr/586708/ http://agritrop.cirad.fr/586708/1/Biteye_2018.pdf |
work_keys_str_mv |
AT biteyebiram ecologicaldistributionandpopulationdynamicsofriftvalleyfevervirusmosquitovectorsdipteraculicidaeinsenegal AT fallassanegueye ecologicaldistributionandpopulationdynamicsofriftvalleyfevervirusmosquitovectorsdipteraculicidaeinsenegal AT cissmamadou ecologicaldistributionandpopulationdynamicsofriftvalleyfevervirusmosquitovectorsdipteraculicidaeinsenegal AT seckmomartalla ecologicaldistributionandpopulationdynamicsofriftvalleyfevervirusmosquitovectorsdipteraculicidaeinsenegal AT apolloniandrea ecologicaldistributionandpopulationdynamicsofriftvalleyfevervirusmosquitovectorsdipteraculicidaeinsenegal AT fallmoussa ecologicaldistributionandpopulationdynamicsofriftvalleyfevervirusmosquitovectorsdipteraculicidaeinsenegal AT tranannelise ecologicaldistributionandpopulationdynamicsofriftvalleyfevervirusmosquitovectorsdipteraculicidaeinsenegal AT gimonneaugeoffrey ecologicaldistributionandpopulationdynamicsofriftvalleyfevervirusmosquitovectorsdipteraculicidaeinsenegal |
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1792499411783254016 |
spelling |
dig-cirad-fr-5867082024-01-29T00:44:59Z http://agritrop.cirad.fr/586708/ http://agritrop.cirad.fr/586708/ Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal. Biteye Biram, Fall Assane Gueye, Ciss Mamadou, Seck Momar Talla, Apolloni Andrea, Fall Moussa, Tran Annelise, Gimonneau Geoffrey. 2018. Parasites and Vectors, 11:27, 10 p.https://doi.org/10.1186/s13071-017-2591-9 <https://doi.org/10.1186/s13071-017-2591-9> Ecological distribution and population dynamics of Rift Valley fever virus mosquito vectors (Diptera, Culicidae) in Senegal Biteye, Biram Fall, Assane Gueye Ciss, Mamadou Seck, Momar Talla Apolloni, Andrea Fall, Moussa Tran, Annelise Gimonneau, Geoffrey eng 2018 Parasites and Vectors L72 - Organismes nuisibles des animaux L73 - Maladies des animaux L20 - Écologie animale Culicidae dynamique des populations distribution géographique écologie animale vecteur de maladie Virus de la fièvre de la vallée du Rift biotope conditions météorologiques entomologie Enquête organismes nuisibles http://aims.fao.org/aos/agrovoc/c_2016 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_5083 http://aims.fao.org/aos/agrovoc/c_427 http://aims.fao.org/aos/agrovoc/c_8164 http://aims.fao.org/aos/agrovoc/c_16463 http://aims.fao.org/aos/agrovoc/c_932 http://aims.fao.org/aos/agrovoc/c_29565 http://aims.fao.org/aos/agrovoc/c_2588 http://aims.fao.org/aos/agrovoc/c_32767 Sénégal http://aims.fao.org/aos/agrovoc/c_6970 Background: Many zoonotic infectious diseases have emerged and re-emerged over the last two decades. There has been a significant increase in vector-borne diseases due to climate variations that lead to environmental changes favoring the development and adaptation of vectors. This study was carried out to improve knowledge of the ecology of mosquito vectors involved in the transmission of Rift Valley fever virus (RVFV) in Senegal. Methods: An entomological survey was conducted in three Senegalese agro-systems, Senegal River Delta (SRD), Senegal River Valley (SRV) and Ferlo, during the rainy season (July to November) of 2014 and 2015. Mosquitoes were trapped using CDC light traps set at ten sites for two consecutive nights during each month of the rainy season, for a total of 200 night-traps. Ecological indices were calculated to characterize the different populations of RVFV mosquito vectors. Generalized linear models with mixed effects were used to assess the influence of climatic conditions on the abundance of RVFV mosquito vectors. Results: A total of 355,408 mosquitoes belonging to 7 genera and 35 species were captured in 200 night-traps. RVFV vectors represented 89.02% of the total, broken down as follows: Ae. vexans arabiensis (31.29%), Cx. poicilipes (0.6%), Cx. tritaeniorhynchus (33.09%) and Ma. uniformis (24.04%). Comparison of meteorological indices (rainfall, temperature, relative humidity), abundances and species diversity indicated that there were no significant differences between SRD and SRV (P = 0.36) while Ferlo showed significant differences with both (P < 0.001). Mosquito collection increased significantly with temperature for Ae. vexans arabiensis (P < 0.001), Cx. tritaeniorhynchus (P = 0.04) and Ma. uniformis (P = 0.01), while Cx. poicilipes decreased (P = 0.003). Relative humidity was positively and significantly associated with the abundances of Ae. vexans arabiensis (P < 0.001), Cx. poicilipes (P = 0.01) and Cx. tritaeniorhynchus (P = 0.007). Rainfall had a positive and significant effect on the abundances of Ae. vexans arabiensis (P = 0.005). The type of biotope (temporary ponds, river or lake) around the trap points had a significant effect on the mosquito abundances (P < 0.001). Conclusions: In terms of species diversity, the SRD and SRV ecosystems are similar to each other and different from that of Ferlo. Meteorological indices and the type of biotope (river, lake or temporary pond) have significant effects on the abundance of RVFV mosquito vectors. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/586708/1/Biteye_2018.pdf text Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1186/s13071-017-2591-9 10.1186/s13071-017-2591-9 info:eu-repo/semantics/altIdentifier/doi/10.1186/s13071-017-2591-9 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1186/s13071-017-2591-9 info:eu-repo/semantics/reference/purl/https://doi.org/10.18167/DVN1/LINKQD info:eu-repo/semantics/reference/purl/https://doi.org/10.18167/DVN1/IQ2J1L info:eu-repo/grantAgreement/EC/FP7/613996//(EU) Emerging viral vector borne diseases/VMERGE |