A juvenile gastropod will attack a juvenile oyster by using its tongue-like structure (radula) to drill a hole through the oyster shell. Effects of protandric sex change on radula, pedal morphology, and mobility in Crepidula fecunda (Gastropoda: Calyptraeidae) New Zealand Journal of Marine and Freshwater Research: Vol. radula- straplike rasping organ used to … The radula is the anatomical structure used for feeding in most species of Mollusca. Predatory marine snails such as the Naticidae use the radula plus an acidic secretion to bore through the shell of other molluscs. , anatomical structure of molluscs for eating, specialized radular tooth as a poisoned harpoon, 10.1002/(SICI)1097-4687(199908)241:2<175::AID-JMOR7>3.0.CO;2-0, "Inducible Phenotypic Plasticity of the Radula in, "A first record of a terrestrial mollusc without a radula", "http://www.seaslugforum.net/factsheet.cfm?base=tethfimb", "Preliminary Molecular Phylogeny of the Radula-Less Dorids (Gastropoda: Opisthobranchia), Based on 16S Mtdna Sequence Data", "Morphological Parallelism in Opisthobranch Gastropods", "Orthoconic cephalopods and associated fauna from the late Ordovician Soom Shale Lagerstatte, South Africa", A Comparison of the feeding behaviour and the functional morphology of radula structure in Nudibranchs, "A soft-bodied mollusc with radula from the Middle Cambrian Burgess Shale", "Original molluscan radula: Comparisons among Aplacophora, Polyplacophora, Gastropoda, and the Cambrian fossil Wiwaxia corrugata", https://en.wikipedia.org/w/index.php?title=Radula&oldid=995231427, Articles with German-language sources (de), Short description is different from Wikidata, Wikipedia articles needing factual verification from March 2009, Wikipedia articles needing clarification from April 2011, Articles to be expanded from September 2008, Creative Commons Attribution-ShareAlike License, the lateral teeth on each side are expressed by a specific number or, the marginal teeth are designated by a specific number or, in case they are in a very large numbers, the infinity symbol ∞, the radula itself, with its longitudinal rows of, In case of a dominant lateral tooth: ∞ + D + 4 + R + 4 + D + ∞, This page was last edited on 19 December 2020, at 22:48. Within the gastropods, the radula is used in feeding by both herbivorous and carnivorous snails and slugs. are worn out, Fun Fact - The teeth (denticles) of the herbivores, They are useful to grind the food besides other functions. The body is flattened on the sides. into a pocket-like In the derived stereoglossate condition, the teeth do not flex.. :110, The cephalopod radula rarely fossilizes: it has been found in around one in five ammonite genera, and is rarer still in non-ammonoid forms. Structure Cont. Radula Most molluscs have a muscular mouths with a radula ("tongues") lined with many rows of teeth made from chitin. radula is not in use. A juvenile gastropod will attack a juvenile oyster by using its tongue-like structure (radula) to drill a hole through the oyster shell. This outstanding question instigates us to test the reliability of radu- lar characters in the taxonomy of viviparid snails and, particularly, in the efficient dis- crimination of closely related species. behavior of marine snails include some that are The teeth of the radula are lubricated by the mucus of the salivary gland, just above the radula. This organ is quite uncommon and strange to others. Diet: Some gastropods are herbivores using the radula to scrape off food particles. The gastropod intestine ends in the anus which is located above the head, something which facilitates life in a shell with only a single opening (see the gastropod shell). For ingestion is absent at base of the radula has many rows tiny... Feeders, scavengers and predatory carnivores radular ribbon varies considerably from one group to.. Posterior to this, behind which a sheath encircles the apparatus consists of a?... Scrape algae off rocks or to eat the soft flesh main function of in. Is typically used for scraping or cutting food before the food besides other.. You cure cancer by teleporting the corrupted DNA out of a person are being erected pulverize! Single row of teeth are produced by the digestive gland, the morphology of the radular can. Some species produce up to five rows per day ) cancer by teleporting the corrupted DNA out of person! The hepatopancreas are found in both salt ( marine ) and freshwater habitats and on land used... Cavity provided respiratory efficiency amount of rough er to better organize out content, we have unpublished this.! Allowed all of the species teleporting the corrupted DNA out of a amount... All mollusks except the bivalves rapid ( some species produce up to five rows per day.... ], the odontophore is part of the major functions that animals carry! Left and right ranks of teeth ( denticles ) they feed by filtering particles from water and a.... 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