elaboration in southern African and Indian Ocean Fissurellidae (Mollusca: Prosobranchia) with descriptions of two new genera and one new species.
The fine structure of the newly discovered propodial
ganglia of the veliger larva of the nudibranch Oncitidoris bilamellata.
Patches of 3 to 6 faint, blue-green fluorescent cells were reliably located in the propodial region of the foot of larvae from all of these groups (Fig.
In these larvae, the largest concentrations of fluorescent cells were again found in the propodial regions of the foot.
Larvae of the nudibranch Onchidoris bilamellata were reported to detect a water-borne cue from the barnacle prey of the adult nudibranch via a pair of lateral propodial
"ganglia"; however, the barnacle factor induces only reversible settlement behavior, but not metamorphosis, which is dependent on a surface-bound cue (Arkett et al.
The various fibers of the medial pedal muscle insert on pedal epithelium underlying the operculum, on intrinsic muscle fibers associated with the crawling surface of the foot, and on the large propodial