parapodium

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Related to parapodial: Notoseta

parapodium

(pl . parapodia) any of the paired numerous segmentally arranged projections of the body of polychaete worms, containing musculature and often bearing chaetae. It is locomotory in function.
References in periodicals archive ?
4-7), but there are some subtle differences in parapodial features in anterior chaetigers, especially in the dorsal cirri.
Submedial pigmented glands occur in the parapodial cirri which are larger than the parapodial lobes.
Diagnosis: Lateral antennae are attached to the parapodial base and auricles are present.
Quizas, la especie mas similar es Syllis licheri Ravara, San Martin & Moreira, 2004, de las costas atlanticas de la peninsula Iberica, pues los artejos de las sedas son tambien cortos y triangulares, pero en esta especie, hay sedas bidentadas y otras unidentadas, la espinulacion de los artejos es siempre mucho mas corta, y una acicula muy gruesa que sobresale de los lobulos parapodiales, lo que no sucede en Syllis sp.
Acicula mas o menos recta, algo curvada distalmente, sobresaliendo un poco del lobulo parapodial.
Sedas compuestas con artejos fuertemente bidentados con espinas gruesas en el margen; acicula recta y sobresaliendo un poco de lobulo parapodial. Distribucion: Cuba.
Thus, although its swimming behavior has less of a directional component than seen in some molluscs that use parapodial flapping, such as Aplysia brasiliana and Clione, Melibe appears to have more control than the animals that use dorsal-ventral flexions, like Trito nia and Pleurobranchaea.
Innervation of parapodial muscles by pedal ganglion motorneurons.
On the same day, the 3 to 6 setigers of the posterior blastema also develop parapodial buds, a few notopodial capillary chaetae on setigers nearest the abdomen, and small lateral tufts of cilia.
The worm feeds by pumping seawater through its tube with modified parapodial "fans," catching suspended organisms in a mucous net that it then rolls up, using the accessory feeding organ; sends to the mouth, via the mid-dorsal ciliary groove; and ingests (MacGinitie, 1939).
Tissues investigated were parapodial lobes, anterior and posterior mucous glands of the female reproductive system, gametolytic sac, and digestive gland.