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Comparative Radular Morphology in Some Intertidal Gastropods along Hormozgan Province, Iran

Mina Eisapour, Seed Jafar Seyfabadi and Behnam Daghooghi

Radula is a specific character and Part of the Appendices of digestive of majority of mollusks; the main organ of the gastropods feeding. Since the shape and structure of the radula teeth is often limited to a species or genus, it is widely used for systematic studies and phylogeny. In this research, the radula morphology of some species from Turbinidae, Trochidae, Neritidae, Cypraeidae, Strombidae, Muricidae and conidae families were analyzed. The collected samples from southern coast of Iran, were fixed, dissected and radular was removed. After preparation, the radular was scanned using a scanning electron microscope (SEM). There were 4 types of radula Rhpidoglossan, Taenioglossan, Rachiglossan and Toxoglossate, among the species under investigation that represents the evolution of feeding from vegetarian to carnivore and indicates a decrease of the number of teeth radula from Archaeogastropoda to the Neogastropoda.