Environmental Factors Associated with Larval Habitats of Anopheline Mosquitoes (Diptera: Culicidae) in Metema District, Northwestern Ethiopia

  • Esayas Aklilu Department of Biology, Mada Walabu University, Bale-Robe, Ethiopia
  • Mizan Kindu Department of Parasitology, School of Medicine, Microbiology and Immunology, MadaWalabu University, Bale-Robe, Ethiopia
  • Araya Gebresilassie Department of Zoological Sciences, Addis Ababa University, Addis Ababa, Ethiopia
  • Solomon Yared Department of Biology, Jigjiga University, Jigjiga, Ethiopia
  • Habte Tekie Department of Zoological Sciences, Addis Ababa University, Addis Ababa, Ethiopia
  • Meshesha Balkew Aklilu Lemma Institute of Pathobiology, Addis Ababa University, Addis Ababa, Ethiopia
Keywords:
Anpheles gambiae s.l.; Larval habitat; Metema; Ethiopia

Abstract

Background: Malaria is one of the major public health concerns in Ethiopia. Control options available for the manage­ment of malaria, include case detection, personal protection and larval source management. Effective control of Anoph­eles larvae largely depends on understanding of the habitats of the vectors. The aims of this study were to identify the breeding habitats of mosquitoes and characterize the larval habitats in Gende Wuha Town in northwestern Ethiopia.Methods: Different aquatic habitats were sampled and characterized for anopheline larvae from November 2012 to June 2013.Results: In total, 2784 larvae of Anopheles mosquitoes were collected from various breeding habitats. Microscopic identification of the III and IV instars revealed the presence of seven Anopheles species. Of the Anopheles spp, Anophe­les gambiae s.l. (80%) was the most predominant species in the study area. Spearman correlation coefficient results also determined that the density of An. gambiae s.l. increased significantly with habitat temperature (r= 0.346, p< 0.01). Significantly higher An. gambiae s.l. larvae were obtained in non-shaded habitats (z= -3.120, p< 0.05) when compared with shaded habitats.Conclusions: The current study demonstrated An. gambiae s.l., the principal malaria vector in the country, is the pre­dominant species in the larval sampling habitats. It was also noted the importance of edge of stream as larva breeding habitats for this species during the dry season of the year. Therefore, attention should be given for this breeding habitat for control of the vector during dry season.

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Published
2020-05-03
How to Cite
1.
Aklilu E, Kindu M, Gebresilassie A, Yared S, Tekie H, Balkew M. Environmental Factors Associated with Larval Habitats of Anopheline Mosquitoes (Diptera: Culicidae) in Metema District, Northwestern Ethiopia. J Arthropod Borne Dis. 14(2):153–161.
Section
Original Article