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Blood feeding pattern and seasonal distribution of dengue mosquito, Aedes aegypti (Diptera: Culicidae) in Southern Benin

By: Yadouleton Anges, Aikpon Rock, Klotoe Jean-Robert, Agbarin Ramziyath, Tchibozo Carine, Agolinou Achase, Ahissou Fabrice, Akogbeto Martin

Key Words: Aedes aegypti, Season, Traps, Blood, Benin.

Int. J. Biosci. 13(4), 84-91, October 2018.

DOI: http://dx.doi.org/10.12692/ijb/13.4.84-91

Certification: ijb 2018 0012 [Generate Certificate]

Abstract

To assess the seasonal distribution of Ae. aegypti and its blood feeding pattern in Cotonou, southern Benin,  a cross seasonal entomological study on adults of Ae. aegypti was carried out from May 2013 to April 2014 in southern Benin. Ae. aegypti were collected by Human Landing Catches (HLC), Indoor Pyrethrum Spray Catches (PSC), Biogents (BG) sentinel trap and Gravid traps (GT) in order to evaluate the seasonal distribution of Ae. Aegypti in southern Benin. Moreover, blood-meal sources were searched from mosquitoes collected using Polymerase Chain Reaction (PCR). During the year of study, a total number of 18,658 mosquitoes were collected. 15,204 were sampled by HLC; 303 with BG trap, 3,038 with PSC, 48 with the GT. From 13,834 females, 1,380 were blood-fed. Adult’s collection was high during the two rainy seasons (June to July and October to November) but declined in the two dry seasons (December to March and August to September). The average of Human Biting Rates (HBR) obtained during the rainy seasons (79.6 bites/ person/ night) was significantly higher than those obtained during the dry seasons (58.62 bites/p/n) (p < 0.05). Identification of blood-meal sources indicated humans as the primary host. These findings showed the presence of Ae. aegypti year round at Cotonou in southern Benin. Data on blood feeding patterns of Ae. aegypti collected during this study showed that the most important host are humans. These results provide valuable information about potential dengue virus transmission cycles and will help to get a greater understanding about DENV ecology in Benin.

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Blood feeding pattern and seasonal distribution of dengue mosquito, Aedes aegypti (Diptera: Culicidae) in Southern Benin

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Yadouleton Anges, Aikpon Rock, Klotoe Jean-Robert, Agbarin Ramziyath, Tchibozo Carine, Agolinou Achase, Ahissou Fabrice, Akogbeto Martin.
Blood feeding pattern and seasonal distribution of dengue mosquito, Aedes aegypti (Diptera: Culicidae) in Southern Benin.
Int. J. Biosci. 13(4), 84-91, October 2018.
https://innspub.net/ijb/blood-feeding-pattern-seasonal-distribution-dengue-mosquito-aedes-aegypti-diptera-culicidae-southern-benin/
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