[ DISTRIBUTION SPATIO-TEMPORELLE DES MOLLUSQUES Physa acuta, HOTES POTENTIELS DE LA SCHISTOSOMOSE A Schistosoma haematobium DANS LA REGION DE KATANA ]
Volume 7, Issue 1, July 2014, Pages 309–316
Pierre Batumike Cishibanji1, Jean Jacques BAGALWA MASHIMAGO2, Bertin NDEGEYI KABALE3, Jean Pierre Baluku Bajope4, and Jean Louis BAHIZIRE KAYEYE5
1 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
2 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
3 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
4 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
5 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
Original language: French
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Schistosoma mansoni, the blood fluke responsible for human intestinal schistosomiasis exists in Katana region and it's hosted by the snail Biomphalaria Pfeifferi. But Schistosoma haematobium responsible of urinary schistosomiasis has not been reported in that area. The appearance of its intermediate host Physa acuta in the region attracts our attention about future infestation. The objective of this study is to determine the distribution area of this species which appears in region. The snail collection was done in 25 sites comprising 14 streams and rivers, 3 groups of ponds, 7 springs and Lake Kivu.These sites are grouped in terms of altitude gradient and the frequency of people and domestic animals. The results show that altitude has an effect on the distribution of Physa acuta in the region. The snail was collected in streams and ponds compared to sites located at the Lake and in rivers. They were found in the site where the ecological conditions were favorable (water velocity, aquatic vegetation and also water quality). The absence of snails in some elevations is related to the ecological factors which reduce the survival of Physa acuta. The risk of local transmission of urinal schistosomiasis in Katana is predictable as its potential intermediate host Physa acuta is now present and largely distributed in the region.
Author Keywords: Distribution, Physa acuta, Schistosoma haematobium, Katana, D. R. Congo.
Volume 7, Issue 1, July 2014, Pages 309–316
Pierre Batumike Cishibanji1, Jean Jacques BAGALWA MASHIMAGO2, Bertin NDEGEYI KABALE3, Jean Pierre Baluku Bajope4, and Jean Louis BAHIZIRE KAYEYE5
1 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
2 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
3 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
4 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
5 Département de Biologie, Centre de Recherche en Sciences Naturelles, RD Congo
Original language: French
Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Schistosoma mansoni, the blood fluke responsible for human intestinal schistosomiasis exists in Katana region and it's hosted by the snail Biomphalaria Pfeifferi. But Schistosoma haematobium responsible of urinary schistosomiasis has not been reported in that area. The appearance of its intermediate host Physa acuta in the region attracts our attention about future infestation. The objective of this study is to determine the distribution area of this species which appears in region. The snail collection was done in 25 sites comprising 14 streams and rivers, 3 groups of ponds, 7 springs and Lake Kivu.These sites are grouped in terms of altitude gradient and the frequency of people and domestic animals. The results show that altitude has an effect on the distribution of Physa acuta in the region. The snail was collected in streams and ponds compared to sites located at the Lake and in rivers. They were found in the site where the ecological conditions were favorable (water velocity, aquatic vegetation and also water quality). The absence of snails in some elevations is related to the ecological factors which reduce the survival of Physa acuta. The risk of local transmission of urinal schistosomiasis in Katana is predictable as its potential intermediate host Physa acuta is now present and largely distributed in the region.
Author Keywords: Distribution, Physa acuta, Schistosoma haematobium, Katana, D. R. Congo.
Abstract: (french)
La schistosomiase intestinale à Schistosoma mansoni dont l'hôte intermédiaire est le mollusque Biomphalaria pfeifferi existe dans la région de Katana. Mais la schistosomiase à Schistosoma haematobium n'a jamais été signalée dans cette région. L'apparition de son hôte intermédiaire dans la région suscite des inquiétudes sur l'infestation ultérieure. Cette étude a été inité pour déterminer l'aire de distribution de cette espèce qui apparait dans la région.Il a été procédé à la récolte des mollusques dans 25 sites dont 14 ruisseaux et rivières, 3 groupes d'étangs piscicoles, 7 sources et le Lac Kivu. Ces sites sont choisis en fonction de l'altitude et le choix des sites a été dicté par la fréquentation de la population et les animaux d'élevage. Les résultats montrent que les mollusques Physa acuta sont inégalement repartis dans les écosystèmes de la région de Katana et en fonction de l'altitude. Les mollusques sont fréquemment récoltés dans les ruisseaux et les étangs par rapport aux autres sites. Ces mollusques se retrouvent dans les sites où les conditions écologiques leur sont favorables (vitesse du courant, végétation aquatique, mais aussi la qualité des eaux). L'absence des mollusques dans certaines tranches d'altitude est liée aux facteurs écologiques de l'espèce qui rend difficile la survie de Physa acuta. Le risque de transmission locale de la bilharziose urinaire est d'autant plus à envisager que les porteurs de Schistosoma haematobium dans les populations venant des régions infestées sont en mouvement dans la région de Katana.
Author Keywords: Distribution, Physa acuta, Schistosoma haematobium, Katana, R. D. Congo.
How to Cite this Article
Pierre Batumike Cishibanji, Jean Jacques BAGALWA MASHIMAGO, Bertin NDEGEYI KABALE, Jean Pierre Baluku Bajope, and Jean Louis BAHIZIRE KAYEYE, “SPATIO-TEMPORAL DISTRIBUTION OF THE SNAILS Physa acuta, POTENTIAL HOSTS of Schistosomiasis of Schistosoma haematobium IN KATANA AREA,” International Journal of Innovation and Applied Studies, vol. 7, no. 1, pp. 309–316, July 2014.
