Results 241 to 250 of about 33,892 (258)
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Habituation in a freshwater snail (Limnaea stagnalis)
Animal Behaviour, 1971Abstract 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 Land and Freshwater Snails of Campeche
Bulletin of the Florida Museum of Natural History, 1967This 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
1996In 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 +3 more
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On the underwater weights of freshwater snails
Zeitschrift f�r Vergleichende Physiologie, 19631. 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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Freshwater snail consumption and angiostrongyliasis in Malaya.
Tropical and geographical medicine, 1979A survey of the freshwater snails, Pila scutata and Bellamyia ingallsiana, as food consumed by the local population was carried out in Peninsular Malaysia. Of these two species the first is preferred; the sizes favoured are between 25--40 mm. Pila snails were found to be consumed by the three communities, viz.
L B, Liat +4 more
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Suriname Freshwater Snails of the Genus Pomacea
1957Of the three Guyanas on the north coast of South America, Suriname is the middle one, lying between French Guyana to the east and British Guyana to the west. The frontiers between these three countries are formed by the Marowijne River (Suriname — French Guyana) and the Courantyne River (Suriname — British Guyana). In general the Guyanas are much alike
Geijskes, D.C., Pain, T.
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The Freshwater Snails of Taiwan (Formosa)
Transactions of the American Microscopical Society, 1974John O. Corliss, Gary L. Pace
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