Search
Search results for
We found
8 results for you
-
THE EFFECT OF CONSTANT TEMPERATURES ON THE HATCHING OF EGGS AND SURVIVAL OF THE FRESHWATER SNAIL BIOMPHALARIA GLABRATA (SAY)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.H. Joubert --- South African Medical Research Council and Department of Zoology, South Africa S.J. Pretorius --- South African Medical Research Council and Department of Zoology, South AfricaThe incubation period and percentage hatching of eggs of pigmented and unpigmented Biomphalaria glabrata at constant temperatures were investigated in the range 14 °C to 34 °C. In order to determine the influence of extreme temperatures on adult snails, specimens... -
AN EVALUATION OF BABY FISH FOOD AS A SUITABLE DIET FOR THE FRESHWATER SNAIL, BIOMPHALABIA GLABRATA (SAY)
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P.H. Joubert --- Research Institute for Diseases in a Tropical Environment, South Africa K.N. de Kock --- Research Institute for Diseases in a Tropical Environment, South AfricaTetra Kin Baby Fish Food ‘E’ for Egglayers (Tetra ‘E’) was evaluated as a possible nutrient for the laboratory culture and maintenance of pigmented and unpigmented Biomphalaria glabrata (Say). Growth was monitored weekly by determining shell diameter and mass. The... -
Benthic macrofauna community composition, abundance and distribution in the Tanzanian and Ugandan inshore and offshore waters of Lake Victoria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GW Ngupula --- , Tanzania R Kayanda --- , TanzaniaBenthic macroinvertebrate community composition was investigated in 2008 at 55 stations at various depths in the nearshore and offshore waters of Lake Victoria, in relation to dissolved oxygen, pH, temperature, chlorophyll a and conductivity. Macroinvertebrate abundance was higher in the... -
A laboratory assessment of the potential molluscicidal activity of some Nigerian plant species used as anthelmintics
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: AA Adenusi --- Parasitology Unit, Department of Plant Science and Applied Zoology, Nigeria AB Odaibo --- Department of Zoology, NigeriaLaboratory studies were conducted to determine the potential molluscicidal activity of five Nigerian plant species used in alternative medicine practice as anthelmintics. Laboratory-bred adult Biomphalaria pfeifferi, the snail host of Schistosoma mansoni in Nigeria, and their viable 0- to 24-hour-old... -
A laboratory assessment of the potential molluscicidal potency of Jatropha curcas aqueous extracts
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Chimbari CJ ShiffPreliminary laboratory studies were conducted to determine the molluscicidal potency of Jatropha curcas, the physic nut. Biomphalaria glabrata and Bulinus globosus snails were exposed to varying concentrations of aqueous extracts of crushed J. curcas seeds from unripe, ripe and overripe... -
The Mollusca inhabiting rice fields in northern Cameroon and their role as intermediate hosts for schistosomes
Item type: Journal Article • Journal: African Zoology • Authors: A. Ndassa --- General Biology Laboratory, Faculty of Science, Cameroon R. Mimpfoundi --- General Biology Laboratory, Faculty of Science, CameroonA systematic account is given of the freshwater gastropod and bivalve fauna of Ouro-Doukoudje, northern Cameroon, based on a survey conducted from July 2000 to June 2001 at 12 sites in rice fields spanning 800 ha. In total, 14 species... -
Sympatric Biomphalaria species (Gastropoda: Planorbidae) in Lake Albert, Uganda, show homoplasies in shell morphology
Item type: Journal Article • Journal: African Zoology • Authors: Maria Plam --- Mandahl-Barth Research Centre for Biodiversity in Developing Countries, DBL – Centre for Health Research and Development, Institute for Veterinary Pathology, Faculty of Life Sciences, University of Copenhagen, Copenhagen Aslak Jørgensen --- Mandahl-Barth Research Centre for Biodiversity in Developing Countries, DBL – Centre for Health Research and Development, Institute for Veterinary Pathology, Faculty of Life Sciences, University of Copenhagen, Copenhagen Thomas K. Kristensen --- Mandahl-Barth Research Centre for Biodiversity in Developing Countries, DBL – Centre for Health Research and Development, Institute for Veterinary Pathology, Faculty of Life Sciences, University of Copenhagen, Copenhagen Henry Madsen --- Mandahl-Barth Research Centre for Biodiversity in Developing Countries, DBL – Centre for Health Research and Development, Institute for Veterinary Pathology, Faculty of Life Sciences, University of Copenhagen, CopenhagenThe three known sympatric Biomphalaria species that occur in Lake Albert; B. choanomphala, B. stanleyi and B. sudanica, were studied using both molecular (COI, 16S and ITS) and shell morphometric data. An unidentified sample of 18 Biomphalaria specimens from Lake... -
Changing patterns of Schistosoma host snail population densities in Maun, Botswana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: MJ Chimbari --- , South Africa C Kalinda --- , South Africa N Siziba --- , ZimbabweChanges in the inflow of water into the Thamalakane River had been predicted to alter snail population dynamics and influence the risk of schistosomiasis transmission in Maun. We determined the abundance of schistosome intermediate host snails along the Thamalakane River...