External parameres of phallosome well sclerotized; aedeagal arch of one piece; endophallus radular
or with more than one pair of sclerites 4 4.
Las caracteristicas del sistema radular
(Larrea et al.
Poppe and Goto (1992) proposed that the genera Adelomelon and Odontocymbiola are synonyms, although Adelomelon has radular
teeth cuspids in the same plane and very short racemose salivary ducts, whereas Odontocymbiola has strongly curved, "fang-like" teeth, and very long racemose salivary ducts, as described by Clench and Turner (1964).
Polystira albida (Perry, 1811) perteneciente a la familia Turridae, se encuentra dentro del suborden Toxoglossa, que se caracteriza por presentar habitos alimenticios de tipo carnivoro, mediante un sistema radular
modificado hacia un mecanismo inyector de veneno, cuya morfologia funcional y evolucion, han sido estudiados por Shimek & Kohn (1981), Sysoev & Kantor (1987) y Kantor & Taylor (1991).
teeth are like mini harpoons, filled with venom.
Las descripciones se realizaron de acuerdo con los tres caracteres utilizados para la clasificacion taxonomica para los animales que tienen concha, que son: concha, aparato radular
y complejo peneal.
In situ measurement of radular
movements of three species of Littorina (Gastropoda: Littorinidae).
Form and function: size of radular
teeth and inorganic content of faeces in a guild of grazing molluscs at Rottnest Island, Western Australia.
They live on the same shore and they partly overlap in distribution, but still they retain differences in shell morphology, physiology, mating behavior, and embryonic and radular
characters (Johannesson et al.
Radula (Figs 16, 17): rachidian tooth wide, comb-like, occupying about half of radular
width; curved base, width ~ 5x greater than its length; ~17 triangular, sharp pointed cusps of similar size, except for some diminishment towards the side; lateral tooth hook-like, bicuspid, base broad (equivalent to 1/2 of rachidian base width), obliquely disposed; main lateral cusp widely curved inwards, about as long as base; secondary, medial cusp approximately half the size of lateral cusp; both cusps separated from each other by smooth area equivalent to 1/3 of tooth's width.
5 4um in diameter that meet beneath radular
sac; ducts may not be fused although having juxtaposed cell walls.
Significance of radular
characters for reconstruction of thaidid phylogeny (Neogastropoda: Muricacea).