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Murex is a genus of medium to large sized predatory tropical sea snails.These are carnivorous marine gastropod molluscs in the family Muricidae, commonly called "murexes" or "rock snails".
Freshwater snails are gastropod mollusks that live in fresh water. 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 great majority of freshwater gastropods have a shell, with very few
The word gastropod comes from Greek γαστήρ (gastḗr 'stomach') and πούς (poús 'foot'), a reference to the fact that the animal's "foot" is positioned below its guts. [7] The earlier name "univalve" means one valve (or shell), in contrast to bivalves, such as clams, which have two valves or shells.
The Terebridae, commonly referred to as auger shells or auger snails, is a family of predatory marine gastropods in the superfamily Conoidea. [3] They have extremely high-spired shells with numerous whorls; their common name refers to the resemblance of their shells to rock-drill bits. More than 400 species are recently known worldwide. [2] [4]
The scaly-foot gastropod is an obligate symbiotroph throughout post-settlement life. [24] Throughout its post-larval life, the scaly-foot gastropod obtains all of its nutrition from the chemoautotrophy of its endosymbiotic bacteria. [26] [24] The scaly-foot gastropod is neither a filter-feeder [5] [24] nor uses other mechanisms for feeding. [5]
When the animal emerges from the dormancy, it discards the calcareous epiphragm using the posterior part of the foot. [citation needed] Helix lucorum may have up to three calcareous epiphragms, [63] but they are much thinner than in H. pomatia. The hibernation and aestivation takes place in the soil, where the snails bury themselves with the foot.
In gastropods, this chemical cue is often a substance produced by the juvenile or adult food source. In bivalves, the chemical cue may be produced by bacteria specific to the type of biofilm growing in the adult habitat. As a result of this inductive response the veliger will metamorphose in a habitat where it can successfully feed and grow to ...
Cypraea tigris, commonly known as the tiger cowrie, is a species of cowry, a large sea snail, a marine gastropod mollusk in the family Cypraeidae, the cowries. Taxonomy [ edit ]