Hanaa M. M. El-Khayat

TL;DR: The severe alteration and degeneration recorded in the physiological and hematological parameters and also histopathological observations are clear evidence for the pollution of the water from which these snails were collected.

TL;DR: Seasonal survey of freshwater snails in different water courses in Egypt during two successive years included 13 snail species and B. alexandrina was significantly found to live under the highest level of Pb, Cd,Cu, Na, K and Ca concentrations than the other species.

TL;DR: This work studied how pollution impacts the ecosystem of Lake Manzala by determination of physicochemical parameters, studying biodiversity of aquatic plants and macroinvertebrates, and determining bioaccumulation of Pb, Cu, Cd & Zn in some major organisms, Biomphalaria alexandrina and Melanoides tuberculata snails and Oreochromis niloticus fish.

TL;DR: Semi-field trials were carried out under simulated natural conditions to evaluate different modes of exposure to Anagallis arvensis and Calendula micrantha as plant molluscicides and bayluscide and copper sulphate as chemical molluskicides and indicated that the pre-exposure increases the snail mortality significantly.

TL;DR: Macro-invertebrates including freshwater snails collected from 643 sites over 8 successive seasons among the River Nile, branches, main canals and certain drains in eight Egyptian Governorates revealed descending tolerances from B. natalensis then B. truncates, but Hilsenhoff Biotic Index (HBI) showed the same tolerance to organic pollution.