Why are gastropods coiled

Download preview PDF. Skip to main content. This service is more advanced with JavaScript available. Advertisement Hide. Authors Authors and affiliations Rihito Morita. This process is experimental and the keywords may be updated as the learning algorithm improves. This is a preview of subscription content, log in to check access. Crofts, D. The development of Haliotis tuberculata; with special reference to the organogenesis during torsion. B , — CrossRef Google Scholar.

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The various gastropod groups feed in different ways. Some are herbivorous while others are predators or scavengers. Those that feed on plants and algae use their radula to scrape and shred their food. Gastropods that are predators or scavengers use a siphon to suction food into the mantle cavity and filter it over its gills.

Some predatory gastropods the oyster borers, for example feed on shelled prey by boring a hole through the shell to locate the soft body parts inside. Most marine gastropods breath via their gills. Most freshwater and terrestrial species are an exception to this rule and breath instead using a rudimentary lung. Those gastropods that breath using a lung are called pulmonates.

The earliest gastropods are thought to have evolved in marine habitats during the Late Cambrian. The earliest terrestrial gastropods were the Maturipupa , a group that dates back to the Carboniferous Period. Throughout the evolutionary history of the gastropods, some subgroups have gone extinct while others have diversified.

Gastropods are classified within the following taxonomic hierarchy:. Gastropods are divided into the following basic taxonomic groups:. Actively scan device characteristics for identification. Use precise geolocation data.

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