Results 231 to 240 of about 33,892 (258)

Freshwater Snails Of Anwai River

2019
The Nigerian Field, 70 (1), 51 ...
Okonta, A A, Ogunbor, A O
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Fixed phagocytes in the freshwater snail Lymnaea stagnalis

Cell and Tissue Research, 1979
Morphological and histochemical examination of the blood and connective tissue of the freshwater snail Lymnaea stagnalis injected with various types of foreign particulate materials has shown the existence of free as well as fixed phagocytic cells. The morphology of the fixed phagocytes is described, and the phagocytic system of the snail is compared ...
T, Sminia, W P, van der Knaap, F G, Kroese   +2 more
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Freshwater snails in brackish water

1929
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Chromosomes of Gyraulus circumstratius, a Freshwater Snail

Nature, 1960
POLYPLOIDY is relatively scarce in the animal kingdom, and is apparently almost entirely confined to those species in which reproduction is partheno-genetic, hermaphroditic or clonal1. Such animals usually do not have a heterogametous sex-determining mechanism to be disturbed by polyploidy.
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Freshwater snails of Oman, South Eastern Arabia

Hydrobiologia, 1985
A systematic account is given of the extant freshwater snail fauna of Oman, based on recent collections made in Dhofar and in the northern mountainous areas. Also included are certain species found in brackish coastal localities. A total of 8 freshwater species is regarded as belonging to the fauna of normal freshwater; 7 have been found alive (Thiara ...
D. S. Brown, M. D. Gallagher
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A new Celebes Freshwater Snail (Hydrobiinae)

1945
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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Biological methods for the control of freshwater snails

Parasitology Today, 1990
As a result of the advent of new drugs and diagnostic techniques, the emphasis in the control of schistosomiasis has changed from snail control to chemotherapy for infected individuals. However, chemotherapy does not prevent reinfection and there remains a need to reduce snail densities in human water supplies. In the past, treatment with molluscicides
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The effects of the herbicide atrazine on freshwater snails

Ecotoxicology, 2015
Atrazine has been shown to affect freshwater snails from the subcellular to community level. However, most studies have used different snail species, methods, endpoints, and atrazine exposure concentrations, resulting in some conflicting results and limiting our understanding.
Kyle D, Gustafson, Jason B, Belden, Matthew G, Bolek   +2 more
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Freshwater snails, mussels and clams (Mollusca)

2002
Chitons, clams, cuttlefish, mussels, octopus, squid, snails, and slugs are all molluscs, but only two classes, the bivalves and the gastropods, have successfully left the sea and invaded the land and its freshwaters.
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Freshwater snails from the river Torrens

1940
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
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