...) in Helisoma and dopamine in Lymnaea ] that inhibit larval development acting via ergometrine-sensitive internal receptors. Thus, the novel regulatory mechanism in larval development of molluscs is suggested and compared with the phenomenon of dauer larvae formation in the nematode Caenorhabditis elegans...

...Nicolas Lartillot; Olivier Lespinet; Michel Vervoort; André Adoutte We report the characterisation of a Brachyury ortholog ( PvuBra ) in the marine gastropod Patella vulgata . In this mollusc, the embryo displays an equal cleavage pattern until the 32-cell stage. There, an inductive event takes...