SOME MICRO-ECOLOGICAL FACTORS INFLUENCING THE POPULATION DYNAMICS OF SCHISTOSOMIASIS INTERMEDIATE HOST SNAILS IN KHARTOUM STATE, SUDA
DOI:
https://doi.org/10.29121/granthaalayah.v4.i8.2016.2573Keywords:
Snail, Ecology, SudanAbstract [English]
This study was conducted to determine the role of some micro-ecological factors influencing the population dynamics of schistosomiasis intermediate host snails in the water bodies of Khartoum State, Sudan. The results show that the air and water temperature play a significant role in the determination of snail growth, a gradual increase of air and water temperate causing an increase in the snail population growth rate with the peak in summer. Water of high turbidity and high current speed caused a drop in the snail population. Vegetation cover in water bodies showed a significant effect on the snail population, the denser the cover the higher the snail population growth rate.
Downloads
References
Ahmed, A.A.1998. Epidemiology of Schistosoma mansoni infection in the Guneid sugar cane scheme, Gezira State. Sudan. Ph.D.Thesis, Department of Zoology, Faculty of Science, University of Khartoum.
Amin, M.A. 1972. Large scale assessment of the molluscicides copper sulphate and N-tritglmorpholine (Frescon) in the north group of the Gezira irrigated area, Sudan. J Trop Med Hyg.75: 169-175.
Appleton, C.C. 1978. Review of literature on a biotic factors influencing the distribution and life cycles of bilharziasis intermediate host snails. Malacol Rev,11: 1-25.
Babiker, A. 1987. Transmission and control of Schistosoma mansoni in the Gezira irrigated area of the Sudan. Ph.D. Thesis, Department of Zoology, Faculty of Science, University of Khartoum.
Colley, D.G., Bustinduy, A.L., Secor, W.E., King, C.H. 2014. Human schistosomiasis. Lancet, 383:2253-64. DOI: https://doi.org/10.1016/S0140-6736(13)61949-2
Engels, D., Chitsulo, L., Montressor, A., Savioli, L. 2002. The global epidemiological situation of schistosomiasis and new approaches to control and research. Acta Trop. 2: 136-146. DOI: https://doi.org/10.1016/S0001-706X(02)00045-1
Fenwick, A. 1988. Experience in mollusciding to control schistosomiasis. Parasitology Today 3: 70-73. DOI: https://doi.org/10.1016/0169-4758(87)90161-X
Khairala, M.A. 2006. Epidemiological observations and control assessment of schistosomiasis in New Halfa Scheme, Ph.D. Thesis, Department of Zoology, Faculty of Science, University of Khartoum.
Madsen, H. 1982. Snail ecology.11. Theory and examples. Notes of Danish Bilharziasis Laboratory, Charl-otten-lund, Danmnark.
Madsen, H. 1990. Biological methods for the control of fresh water snails. Parasitology Today 6: 237-241. DOI: https://doi.org/10.1016/0169-4758(90)90204-H
Mahmoud, A.A.F., Pasvol, G., Hoffman, S.L. 2001. Schistosomiasis. In: Tropical Medicine. Science and Practice. Vol. 3. London: Imperial College Press. DOI: https://doi.org/10.1142/p126
O’Keeffe, J.H. 1985. Population biology of the freshwater snail Bulinusglobosus on the Kenya Coast. II. Feeding and density effects on population parameters. J App Ecol. 34: 534-543.
Pfluger, W. 1980. Experimental epidemiology of schistosomiasis. I. The prepatent period and cercarial production of Schistosoma mansoni in Biomphalaria snails at various constant temperatures. Z Parasitenkd. 63: 159-169. DOI: https://doi.org/10.1007/BF00927532
Storey, K.B. 2002. Life in the slow lane: molecular mechanisms of estivation. CompBiochem Physiol. 133A: 733-754. DOI: https://doi.org/10.1016/S1095-6433(02)00206-4
Sturrock, R.F. 1993. The intermediate host and host parasite relationships. In: Human schistosomiasis, P. Jordan, G. Webbe, R.F. Sturrock. (eds.), CAB International, Wallingford, USA.
Webbe, G. 1962. The transmission of Schistosoma haematobium in an area of Lake Province, Tanganyika. Bull World Health Organ. 27: 59-85.
Downloads
Published
How to Cite
Issue
Section
License
With the licence CC-BY, authors retain the copyright, allowing anyone to download, reuse, re-print, modify, distribute, and/or copy their contribution. The work must be properly attributed to its author.
It is not necessary to ask for further permission from the author or journal board.
This journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.
