Like some planktotrophic larvae in the closely related Echiuridae
and Opheliidae, larvae of N.
3 All crabs 2 3 Majidae Oregoniidae, Chionoecetes bairdi Chionoecetes opilio 3 Hyas lyratus 2 All Sipuncula 3 All Echiuridae
19 27 All Bryozoa Clypeasteroida, sand dollar 2 All Ascidiacea, tunicates 7 Chelysoma spp.
Feeding: Hatschek (1880); Miner et al (1999) Opheliidae Feeding: Miner et al (1999) Oweniidae Feeding: Emlet & Stralhmann (1994) Polygordiidae * Feeding: Hatschek (1878); Woltereck (1904); Pernet, pers.
Our study describes ciliation and mechanisms of particle capture in larvae of two families of annelids, the Opheliidae and the Echiuridae.
McHugh's (1997) molecular evidence shows that they are derived annelids, and she suggests that they should be placed in the annelid family Echiuridae.
Our observations demonstrate that larvae in the annelid families Opheliidae and Echiuridae are able to capture particles both with opposed bands and directly at the mouth.
Our observations add the Opheliidae and Echiuridae to those annelid families known to possess larvae with opposed-band feeding.