نتایج جستجو برای: helix snails
تعداد نتایج: 29272 فیلتر نتایج به سال:
The objectives of this study were (1) to determine cadmium (Cd) accumulation in the midgut gland of a land snail Helix pomatia L. inhabiting residential areas of the 14 largest cities in Poland, and (2) to examine whether the accumulated Cd exerted any toxic effects. The average accumulation of Cd in the midgut gland of snails, weighing 16-18 g, ranged from 7.00 to 87.3 µg/g dry weight (0.06-0....
Monoclonal antibodies were raised against the lectin of Helix pomatia (HPL). Besides antibodies bearing the more common gamma and kappa chains, antibodies with alpha, mu and lambda 2 chains were elicited. The anti-HPL antibodies are expected to be useful in studies on HPL biogenesis and HPL substructure and in studies concerned with the binding of HPL to cell surfaces. Binding of carbohydrates ...
Long-term changes in membrane potential after associative training were described previously in identified premotor interneurons for withdrawal of the terrestrial snail Helix. Serotonin was shown to be a major transmitter involved in triggering the long-term changes in mollusks. In the present study we compared the changes in electrophysiological characteristics of identifiable premotor interne...
In the present study, the efficacy of 6 different species of medicinal plants belonging to 5 different families against Biomphalaria alexandrina snails and Schistosoma mansoni stages were examined. During screening test of water suspension and methanol extract, results revealed that Oreopanax reticulatum (Family: Araliaceae) had the strongest molluscicidal activity against Biomphalaria alexandr...
This study investigated the effects of accumulated copper, on digestive epithelium height and percentage area, and on oocyte numbers of the snail Helix aspersa, in a vineyard where copper oxychloride is sprayed. The ultimate aim was to determine the usefulness of these cellular responses as biomarkers. Results showed that snails collected 2 months after fungicide application, had a significantl...
The purpose of the study was to record different intermediate hosts of A. cantonensis and to determine the infection prevalence and intensity of this parasite in freshwater snails in relation to some ecological and biological factors. The study was conducted at Al-Salam irrigation Canal and Al-Abtal village (north Sinai) for one year, from March 2004 to February 2005. Thirteen species of freshw...
Biomphalaria snails are instrumental in transmission of the human blood fluke Schistosoma mansoni. With the World Health Organization's goal to eliminate schistosomiasis as a global health problem by 2025, there is now renewed emphasis on snail control. Here, we characterize the genome of Biomphalaria glabrata, a lophotrochozoan protostome, and provide timely and important information on snail ...
Biomphalaria glabrata are simultaneous hermaphroditic freshwater snails that act as intermediate hosts for the macroparasitic trematode Schistosoma mansoni, a causative agent of schistosomiasis. Heritability and strain-specificity of both snail resistance and susceptibility to schistosome infection have been demonstrated, genetic variability for which is maintained, in part, through trade-offs ...
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