Results 191 to 200 of about 31,775 (233)

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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Habituation in a freshwater snail (Limnaea stagnalis)

Animal Behaviour, 1971
Abstract Withdrawal responses were elicited by mechanical or visual stimuli and recorded both automatically and by observation. With stimulus repetition both response amplitude and frequency decline but the latency remains about the same: these effects are short lived.
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The Freshwater Snails Of Taiwan (formosa).

1970
PhD ; Zoology ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/188611/2/7021747 ...
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The Land and Freshwater Snails of Campeche

Bulletin of the Florida Museum of Natural History, 1967
This review of the land and freshwater snails of Campeche, Mexico, records 59 species and subspecies of snails including 47 terrestrial and 12 acquatic forms; 21 are recorded for the first time from the state. Miradiscops haplocochlion is described as new; 11 previously recognized taxa are placed in synonymy.
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The chemosensory spectrum of freshwater snails

1996
In this paper we review the present information on the chemosensory spectrum of freshwater snails with particular reference to our study on Planorbarius. By comparing our results with other data from literature, it is evident that different species have different chemosensory spectra as a function of their ecological adaptation.
D. Sonetti, MARAMALDO, Rita, MOLA, Lucrezia, B. Fratello   +3 more
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On the underwater weights of freshwater snails

Zeitschrift f�r Vergleichende Physiologie, 1963
1. Under laboratory conditions, the mantle cavities of Lymnaea stagnalis and Planorbarius corneus immediately after ventilation at the surface, contain enough air to make the animals buoyant. 2. Both species lose this buoyancy over the first three hours of submersion by a process reducing the gas volume. 3. The gas is used as
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Integrative oncology: Addressing the global challenges of cancer prevention and treatment

Ca-A Cancer Journal for Clinicians, 2022
Jun J Mao,, Msce, Lorenzo Cohen, Karen M Mustian   +2 more
exaly