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|Title: ||Diversity in breeding sites and distribution of Anopheles mosquitoes in selected urban areas of southern Ghana|
|Authors: ||Mattah, Precious A. Dzorgbe|
Amekudzi, Leonard K.
Mattah, Memuna M.
Souza, Dziedzorm K. de
Kartey-Attipoe, Worlasi D.
Wilson, Michael D.
|Issue Date: ||2017|
|Publisher: ||Parasites & Vectors|
|Citation: ||Parasites & Vectors (2017) 10:25|
|Abstract: ||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.
Results: Sixty-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
Conclusion: Taken 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.|
|Description: ||An article published by Parasites & Vectors (2017) 10:25 and available at
|Appears in Collections:||College of Science|
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