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Lymnaea stagnalis, better known as the great pond snail, is a species of large air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae. The great pond snail is a model organism to study parasitology, neurology, embryonal development and genetic regulation.
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Helix is a genus of large, air-breathing land snails native to the western Palaearctic and characterized by a globular shell. [1] [2]It is the type genus of the family Helicidae, and one of the animal genera described by Carl Linnaeus [3] at the dawn of the zoological nomenclature.
Freshwater snails are gastropod mollusks that live in fresh water. There are many different families. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs to major rivers.
The siphonal canal is an anatomical feature of the shells of certain groups of sea snails within the clade Neogastropoda. Some sea marine gastropods have a soft tubular anterior extension of the mantle called a siphon through which water is drawn into the mantle cavity and over the gill and which serves as a chemoreceptor to locate food. [1]
The grove snail, brown-lipped snail or lemon snail (Cepaea nemoralis) is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc. [3] It is one of the most common large species of land snail in Europe, and has been introduced to North America. Subspecies. Cepaea nemoralis etrusca (Rossmässler, 1835) [4]
The foot is also unusual, being armored with iron-mineralised sclerites. The snail's oesophageal gland houses symbiotic gammaproteobacteria from which the snail appears to obtain its nourishment. This species is considered to be one of the most peculiar deep-sea hydrothermal-vent gastropods, and it is the only known extant animal that ...
The excretory system of gastropods removes nitrogenous waste and maintains the internal water balance of these creatures, commonly referred to as snails and slugs. The primary organ of excretion is a nephridium. Drawing of excretory system of Lymnaea meridensis; renal tube and ureter in renal region extending between pericardium and mantle collar