Author(s): A. Ebenezer , S.N. Okiwelu , P.I. Agi , M.A.E Noutcha , T.S. Awolola & A.O. Oduola
Journal: Journal of Vector Borne Diseases
ISSN 0972-9062
Volume: 49;
Issue: 3;
Start page: 164;
Date: 2012;
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Keywords: Anopheles gambiae s.l. | Bayelsa state | distribution | eco-vegetation | Nigeria | PCR
ABSTRACT
Background & objectives: Correct vector identification is an important task in the planning and implementationof malaria vector control programmes. This study was designed to provide baseline information on the speciescomposition and distribution of members of the Anopheles gambiae complex in three eco-vegetational zones inBayelsa state, Nigeria.Methods: Adult mosquitoes were collected by pyrethrum spray catch (PSC) in randomly selected houses duringSeptember 2009–August 2010. Anopheles mosquitoes were identified using standard morphological keys.Mosquitoes identified as An. gambiae s.l. were used for species specific PCR-assays.Results: Out of 203 Anopheles gambiae s.l. successfully amplified, 180 (88.7%) were Anopheles gambiae s.s.,14 (6.9%) were An. melas and 9 (4.4%) were An. arabiensis. The variation in the sibling species composition ofAn. gambiae s.l. was not significant (p >0.05). Anopheles gambiae s.s. was predominant in all the collectionswith three sibling species occurring in all the eco-vegetational zones.Interpretation & conclusion: The observation of An. melas in the fresh water swamp forest of Yenagoa is ofimportance in malaria epidemiology. These findings are of importance in the planning and implementation ofmalaria vector control strategy in the three eco-vegetational zones of Bayelsa state.
Journal: Journal of Vector Borne Diseases
ISSN 0972-9062
Volume: 49;
Issue: 3;
Start page: 164;
Date: 2012;
VIEW PDF
DOWNLOAD PDF Original pageKeywords: Anopheles gambiae s.l. | Bayelsa state | distribution | eco-vegetation | Nigeria | PCR
ABSTRACT
Background & objectives: Correct vector identification is an important task in the planning and implementationof malaria vector control programmes. This study was designed to provide baseline information on the speciescomposition and distribution of members of the Anopheles gambiae complex in three eco-vegetational zones inBayelsa state, Nigeria.Methods: Adult mosquitoes were collected by pyrethrum spray catch (PSC) in randomly selected houses duringSeptember 2009–August 2010. Anopheles mosquitoes were identified using standard morphological keys.Mosquitoes identified as An. gambiae s.l. were used for species specific PCR-assays.Results: Out of 203 Anopheles gambiae s.l. successfully amplified, 180 (88.7%) were Anopheles gambiae s.s.,14 (6.9%) were An. melas and 9 (4.4%) were An. arabiensis. The variation in the sibling species composition ofAn. gambiae s.l. was not significant (p >0.05). Anopheles gambiae s.s. was predominant in all the collectionswith three sibling species occurring in all the eco-vegetational zones.Interpretation & conclusion: The observation of An. melas in the fresh water swamp forest of Yenagoa is ofimportance in malaria epidemiology. These findings are of importance in the planning and implementation ofmalaria vector control strategy in the three eco-vegetational zones of Bayelsa state.
