Water closets as breeding sites for Aedes mosquitoes in dry seasons
https://dx.doi.org/10.4314/njpar.v43i1.19
Keywords:
dry season, water closet, occurrence, physicochemical parameters, density, Aedes aegyptiAbstract
The challenges of reducing vectors that transmit diseases such as mosquitoes have been very tasking, especially in dry seasons where there are no visible breeding habitats. The identification of these breeding habitats and control measures during dry periods are important in the integrated control approach. This study assessed various water closets to ascertain the occurrence and density of mosquitoes and the physicochemical parameters of the water in a University in Southern Nigeria. Water closets in the main campus and its annexes were examined for either the presence or absence of immature stages and adult mosquitoes. Mosquito density in each sampled closet was determined. Water parameters were taken using standard techniques. The association between the density of immature stages and adults with water parameters was equally determined. Mosquitoes were morphologically identified. Hydrogen ion concentration (7.57), electrical conductivity (498.60 µS/cm), and salinity (249.20 ppm) were highest in closets with mosquitoes compared to the closets without mosquitoes. Significant differences were observed between all the sampled water parameters of closets with and without mosquitoes (p< 0.05). Mean larval density (40.77) and occurrence were higher than eggs, pupal and adults. All adult mosquitoes (49) identified was Aedes aegypti. Out of the closets sampled, 48.2% had mosquitoes. Temperature and Hydrogen ion concentration (pH) positively influenced larval and pupae density while conductivity and salinity showed no correlation to all stages of mosquitoes. This study revealed that closets in this area also serve as reservoir habitats for Aedes aegypti especially when they are not in use during dry seasons and has implications for disease transmission in the region. This requires urgent awareness and prompt public health interventions.
References
Tandina, F., Doumbo, O., Yaro, A.S., Traore, S.F., Parola, P., and Robert, V. (2018). Mosquitoes (Diptera: Culicidae) and mosquito-borne diseases in Mali, West Africa. Parasites Vectors 11: 467 (2018). https://doi.org/10.1186/s13071-018-3045-8
Ukpai, O.M., and Ekedo, C.M. (2018). Insecticide Susceptibility Status of Aedes aegypti in Umudike, Ikwuano LGA Abia State, Nigeria. Animal ResearchInternational 15(3): 3082 – 3089
Akpan, G.E., Adepoju, K.A., Oladosu,O.R., and Adelabu, S.A. (2018). Dominant malaria vector species in Nigeria: Modelling potential distribution of Anopheles gambiae sensu lato and its siblings with MaxEnt. 13(10): e0204233. https://doi.org/10.1371/journal.pone.02042
Adeleke, M. A., Mafiana, C. F., Idowu, A.B., Adekunle, M. F., and Sam-Wobo, S. O. (2008). Mosquito larval habitats and their Public health implications in Abeokuta, Ogun State, Nigeria. Tanzania Journal of Health Research, 10 (2): 103-107. Publishedby the Tanzania Medical Research Institute. Available online at: http://www.bioline.org.br/journals and http://www.ajol.info/index.php/thrb
Adeleke, M.A., Mafiana, C.F., Idowu, A.B., Sam-Wobo, S.O., and Idowu, O.A. (2010). Population dynamics of indoor sampled mosquitoes and their implication in disease transmission in Abeokuta, southwestern Nigeria. Journal of Vector Borne Diseases 47 (1): 33–38. Published by the National Institute of Malaria Research on behalf of Indian Council of Medical Research (ICMR). Available online at www.mrcindia.org/journal
Mattah, P.A.D., Futagbi, G., Amekudzi,L.K., Mattah, M.M., de Souza, D.K.,Kartey-Attipoe, W.D., Bimi, L., and Wilson, M.D. (2017). Diversity in breeding sites and distribution of Anopheles mosquitoes in selected urban areas of southern Ghana. Parasites Vectors 10: 25. https://doi.org/10.1186/s13071-016-1941-3.
Ojianwuna, C.C., Enwemiwe, V.N., and Ekeazu, C.N. (2021). Abundance anddistribution of Anopheles mosquitoes in relation to physicochemical properties in Delta State, Nigeria. FUDMA Journal ofSciences 5(3): 274-280.
Batra, C. P. Mittal, P. K., Adak, T. and Ansari, M. A. (2005). Efficacy of IGR compound Starycide 480 SC (Triflumuron) against mosquito larvae in clear and polluted water. Journal of Vector Borne Diseases 42(3): 109–116.
Belinato, T.A., Martins,A.J., Lima, J.B.P., and Valle D. (2013). Effect of triflumuron, a chitin synthesis inhibitor, on Aedes aegypti,
Aedesalbopictus and Culex quinquefasciatus under laboratory conditions. Parasites Vectors 6: 83. https://doi.org/10.1186/1756-3305-6-83
World Health Organization (2012). Global Plan for Insecticide Resistance Management in Malaria Vectors. WHO Global Malaria
Programme. WHO/HTM/GMP/2012.5, Geneva.
Ojianwuna, C.C, Enwemiwe V.N, and Ossai, P.I. (2021). The use of deltamethrin, permethrin, their combination and synergist
on female Anopheles mosquito in Isoko South, Delta State. Nigerian Journal of Science and Environment. 19(1):39-50.
Villarreal-Trevino, C.R., PenillaNavarro, R.P., Vazquez-Martinez, M.G., Moo-Llanes, D.A., Rios-Delgado, J.C., Fernandez-Salas, I., and Rodriguez, A.D. (2015). Larval habitat characterization of Anopheles darling from its northernmost Mexico. Malaria Journal. 14:517.
WHO. (2021). World Malaria Report 2021. Geneva: World Health Organization.
WHO (2013). Larval source management:A supplementary measure for malaria vector control. An operational manual. Geneva. P
Ojianwuna, C.C., Enwemiwe, V.N., and Erhunmwun S. (2021). Effect of petroleum products on larvicidal activity of Aedes mosquitoes in Ika North-East LGA, Delta State, Nigeria. The Open Ecology Journal. 14: 24-30.
Ojianwuna, C.C., Ilondu E.M., andEnwemiwe, V.N. (2021). Larvicidal Efficacy of Leaf Extracts from Three Asteraceous Plant against Culex
quinquefasciatus FUDMA Journal of Sciences 5(2): 100-108.
Rueda, L.M. (2004). Pictorial keys for the identification of mosquitoes (Diptera: Culicidae) associated with Dengue virus transmission. Zootaxa. 589(589): 1-27. http://doi.org/10.11646/zootaxa.589.1.1
Coetzee, M. (2020). Key to the females of Afrotropical Anopheles mosquitoes (Diptera: Culicidae). Malaria Journal 19:70.
Amini, M., Hanafi-Bojd, A.A., Aghapour, A.A., and Chavshin, A.R. (2020). Larval habitats and species diversity of mosquitoes (Diptera: Culicidae) in West Azerbaijan Province, North-western Iran. BMC Ecology. 20: 60.
Ojianwuna, C.C., Enwemiwe, V.N., Ekeazu, C.N. (2021). Abundance and distribution of Anopheles mosquitoes about physiochemical properties in Delta State, Nigeria. FUDMA Journal of Science. 5(3): 274-280.
Garjito, T.A., Susanti, L., Mujiyono, M., Prihatin, M.T., Susilo, D., Nugroho, S.S., Mujiyanto, M., Wigati, R.A., Satoto, T.B.T., Manguin, S., Gavotte, L., and Frutos, R. (2021). Assessment of mosquito collection methods for dengue surveillance. Frontiers in Medicine. 8: 685926.
Doi:10.3389/fmed.2021.685926.
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