“…Similarly, several lines of evidence suggest that MFT have sensory roles, as expected for organs located on the middle mantle fold (Yonge 1983). For example, MFT in Ostreoidea and Pterioidea are organs provided with multiple tentacular nerves and sensory receptors, particularly at the tip of the tentacle where a group of ciliary receptors is located (Audino and Marian 2020). In scallops (Pectinidae), long MFT were observed in Argopecten irradians (Lamarck, 1819) (Wilkens 2006), Nodipecten nodosus (Linnaeus, 1758) (Audino et al 2015), Pecten maximus (Linnaeus, 1758) (Dakin 1909), and Placopecten magellanicus (Gmelin, 1791) (Moir 1977).…”