Many subsequent authors perpetuated Lamarck's misidentification, until Clench and Turner (1964) described the radular
morphology and properly distinguished both taxa.
Diffferentiation in radular
and embryonic characters, and further comments on gene flow, between two sympatric morphs of Littorina saxatilis (Olivi).
Finally, the images were analyzed using the software Image Pro-Plus, version 5.0 (Media Cybernetics, Rockville, MD), to estimate radular
length and width.
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.
Forewing with yellow or light brown veins and greyish radular
areas, membrane colorless, transparent.
Significance of radular
characters for reconstruction of thaidid phylogeny (Neogastropoda: Muricacea).
Distribution and radular
morphology of various nudibranchs (Gastropoda: Opisthobranchia) from the Gulf of California.
In GKL with an SL of ~2 mm, the teeth are larger, the rachidian tooth no longer has a triangular tip and lies flat along the radular
ribbon except for a curled cusp.
In our long-term growth studies, the mesh bags housing the snails might have encouraged the development of biofilms, and thus provided an additional food source for juveniles through radular
rasping, particularly for those being maintained without solid substrate (Chaparro et al., 2002; Navarro and Chaparro, 2002).