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The radula (US: / ˈ r æ dʒ ʊ l ə /; pl.: radulae or radulas) [1] is an anatomical structure used by mollusks for feeding, sometimes compared to a tongue. [2] It is a minutely toothed, chitinous ribbon, which is typically used for scraping or cutting food before the food enters the esophagus .
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Stylommatophora is the most diverse group of land snails and slugs. Pallial cavity forms a spacious, air-filled lung. Anus is located on the right side close to the pneumostome. Operculum is missing. Two pairs of tentacle are retractable and the posterior pair bears eyes on the tips. Radula typically has many small, quite uniform teeth per row.
The buccal mass is the first part of the digestive system, and consists of the mouth and pharynx. The mouth includes a radula, and in most cases, also a pair of jaws. The pharynx can be very large, especially in carnivorous species. Many carnivorous species have developed a proboscis, containing the oral cavity, radula, and part of the ...
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The radula is taenioglossate, consisting of seven teeth per row: one middle tooth, flanked on each side by one lateral and two marginal teeth. The radula is used to scrape algae and detritus. Phlorotannins in the brown algae Fucus vesiculosus and Ascophyllum nodosum act as chemical defenses against L. littorea. [19]
Tympanotonus radula (Linnaeus, 1758) (junior synonym; misspelled genus) Tympanotonos fuscatus , the West African mud creeper , is a species of snail living in brackish water , a gastropod mollusk in the family Potamididae .
[3] [4] [5] When drilling, it alternates acid secretions with scraping by its radula until it has fully penetrated the prey's shell, leaving a characteristic hole about 1 mm in diameter. [5] The speed of this process likely depends on temperature, [ 6 ] and the size of the hole depends on the size of the dogwhelk's accessory boring organ, which ...