Asma Mahmoud Hamza¹ , Kamal Mohammed Nour Saeed¹ , Fatima Abbas Khahd²

1 Department of Biology, Faculty of Education, University of Kassala, Sudan
2 Department of Biochemistry, Faculty of Medicine, University of Kassala, Sudan
Author    Correspondence author
Journal of Mosquito Research, 2017, Vol. 7, No. 20   doi: 10.5376/jmr.2017.07.0020
Received: 25 Sep., 2017    Accepted: 26 Oct., 2017    Published: 20 Nov., 2017

This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Hamza A.M., Saeed K.M.N., and Khahd F.A., 2017, Physicochemical characteristics associated with the mosquito (Diptera: Culicidae) immature abundance in seasonal aquatic habitats in Kassala town, eastern Sudan, Journal of Mosquito Research, 7(20): 166-174 (doi: 10.5376/jmr.2017.07.0020)

The study aimed to assess the mosquito larval abundance in seasonal man-made larval habitats associated with rainfall in Kassala town, eastern Sudan during the short rainy season 2016, evaluate the physicochemical characteristics, and determine the relationships between such characteristics and immatures abundance. Immature stages were collected monthly in the selected larval habitats, identified into genera by morphological criteria and counted. Physical characteristics were estimated by visual inspection. Water sample was collected from each larval habitat and analyzed for chemical characteristics. A total of 5020 mosquito larvae and pupae were collected and identified into two genera, Anopheles and Culex. All the investigated larval habitats were found exposed to direct sunlight with still water. The monthly mean values of measured chemical characteristics did not vary significantly except for the following parameters: pH, calcium and magnesium. Occurrence of Anopheline immatures was only associated, positively, with nitrates (r = 0.53; p < 0.05) while the presence of Culex immatures was associated, negatively with pH value (r = -0.56; p < 0.05) and positively, with sulphate (r = 0.56; p < 0.05). Correlations found between certain chemical parameters and larval abundance, perhaps, confirms the influence of these parameters on the abundance of two mosquito genera in their breeding habitats.

Mosquito abundance; Anopheles; Culex; Laval habitat; Physical; Chemical; Characteristics; Correlation; Kassala; Sudan