Results 201 to 210 of about 6,972 (211)
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Determinants of paternity in the garden snail Helix aspersa
Behavioral Ecology and Sociobiology, 2002Despite the likely importance of post-copulatory sexual selection in simultaneous hermaphrodites, the factors influencing sperm competition in these organisms are generally unknown. We have investigated the effects of dart-shooting, mating order, and several other predictors on the proportion of offspring fathered by penultimate (P
Ronald Chase, David W. Rogers
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Toxic effects of cadmium on the garden snail (Helix aspersa)
Bulletin of Environmental Contamination and Toxicology, 1981Spreading treated municipal wastes on agricultural and forest lands is becoming an established method of disposal. However, there is concern about the deleterious effects of toxicants, particularly cadmium, in the sludges. Cadmium concentrations in sewage sludge have been reported as high as 1500 ppM.
L. K. Russell +2 more
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Food-attraction conditioning in the snail, Helix pomatia
Journal of Comparative Physiology A, 1995Adult pulmonate snails (Helix pomatia) were released equidistant between two types of food, carrot and potato, respectively. Naive snails moved in different directions and did not locate either food above chance, although both foods were readily eaten upon direct contact.
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Transport of pinocytic vesicles in the eye of a snail, Helix aspersa
Cell and Tissue Research, 1983The heads of small adult snails, Helix aspersa, were injected with horseradish peroxidase (HRP) for one to five hours before extirpating the eyes and preparing them cytochemically for electron microscopy. There was internalization of tracer by pinocytic vesicles (pinosomes) at the bases of types-I and -II sensory cells, ganglion cells and, in lesser ...
Jean L. Brandenburger, Richard M. Eakin
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Elimination of Foreign Particles by the Snail, Helix aspersa
Nature, 1967Brown and Brown1 have described techniques for investigating the elimination of foreign, non-metabolizable particles from the bodies of invertebrate animals and have applied these techniques to the sandy-beach snail, Bullia. In this prosobranch the particles are phagocytosed by macrophagic haemocytes which migrate to the exterior mainly through the ...
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The fine structure of the myofibers in the heart of the snail Helix aspersa
Journal of Ultrastructure Research, 1963The ultrastructure of the myofibers in the heart of a mollusk is described. Two types of myofilaments are seen in the A-band. The Z-band material is fragmentary and results in small myofibrils. There is a well-represented sarcotubular system, and parts of it appear to be associated with the Z-band material and the sarcolemma.
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Determination of piperidine in snail brain (Helix pomatia)
Brain Research, 1973Ezio Giacobini +3 more
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On the Immediate Fate of Bacteria in the Land Snail Helix
1974The fate of materials injected into molluscs and other facets of molluscan internal defense mechanisms have been investigated and discussed widely. The unifying vision among the investigators was that they saw in such studies a useful tool for invertebrate immunology.
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Determination of cadaverine in active and dormant snails (Helix pomatia)
Brain Research, 1974Matej Stepita-Klauco +5 more
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