Showing papers on "Biomphalaria alexandrina published in 1975"

Carbohydrate metabolism in uninfected and trematode-infected snails Biomphalaria alexandrina and Bulinus truncatus

Abstract: 1. 1. Schistosome infection of the snails Biomphalaria alexandrina and Bulinus truncatus affected their citric acid cycle pathways; especially those concerned with succinic and cytochrome oxidases. 2. 2. The rate of gluconeogenesis was decreased in schistosome-infected snails to 62 per cent for Bulinus truncatus and to 45 per cent for Biomphalaria alexandrina. 3. 3. Lactic acid production was increased in schistosome-infected snails to 52 and 73 per cent that of uninfected B. alexandrina and B. truncatus respectively. 4. 4. Schistosome infection caused a marked decrease in the glycogen content of the tissues of both snail species. 5. 5. The effect of schistosome infection on the intermediary metabolism of both snails is discussed.

The suitability of several aquatic snails as intermediate hosts for Angiostrongylus cantonensis.

Abstract: Sixteen species of aquatic snails of four families were tested by quantitative technique under standardized conditions for their suitability as intermediate hosts for Angiostrongylus cantonensis. These species were the planorbid snails Biomphalaria glabrata, Biomphalaria alexandrina, Planorbis planorbis, Planorbis intermixtus, Bulinus truncatus, Bulinus contortus, Bulinus africanus, Bulinus tropicus and Helisoma sp.; the lymnaeid snails Lymnaea natalensis, Lymnaea tomentosa, Lymnaea stagnalis, and Stagnicola elodes; the physid snail Physa acuta (an Egyptian and a German strain) and the ampullariid snails Marisa cornuarietis and Lanistes carinatus.

Effect of Sublethal Doses of Copper Sulphate and Bayluscide on Survival and Oxygen Consumption of the Snail Biomphalaria Alexandrina

Abstract: The survival rate and oxygen consumption of Biomphalaria alexandrina snails exposed to sublethal concentrations of copper sulphate and Bayluscide were investigated. Prolonged exposure periods to the sublethal concentrations increased the percentage mortality among the exposed snails.