Sipuncula

Los filos menos abundantes y menos representados fueron Chordata, Sipuncula y Platyhelminthes con <1%.

However, the Sipuncula included seven individuals of A.

Scyliorhinus canicula exhibited a diverse diet, composed of 63 different taxa, belonging to eight taxonomical groups: Sipuncula, Annelida, Crustacea, Mollusca, Echinodermata, Urochordata, Chondrichthyes, and Teleostei, as well as unidentified materials (Table 1).

Polychacta, Myzostomida, Pogonophora, Echiura, Sipuncula. (P.

Authority Bering Sea area Skalkin (1963) Southeastern Mineva (1964) Eastern Feder (1977, 1978) Eastern Allen(1) (1984) Southeastern Zhang (1987) Eastern Lang (1992) Eastern Authority Major food items Skalkin (1963) Benthic crustaceans, mollusks, polychaetes Mineva (1964) Bivalves, gastropods, polychaetes Feder (1977, 1978) Polychaetes, bivalves, amphipods, nemerteans Allen(1) (1984) Benthopelagic, epifaunal, sessil infaunal preys Zhang (1987) Polychaetes, amphipods, Echiura, Sipuncula Lang (1992) Polychaetes, amphipods, bivalves, decapods

2 and 5 Other Metazoa Phyla Other Eukaryote Phyla Chaetognatha Ciliophora Ctenophora Other Alvelata Entoprocta Amoebozoa Hemichordata Cryptophyta Loricifera Loukozoa Gnathifera Glaucophyta Onochophora Choanozoa Porifera Picozoa Rotifera Foraminifera Xenoturbeiidea Rhodophyta Acanthocephala Myzozoa Chordata Apusozoa Cycliophora Heliozoa Gnathostomulida Percolozoa Kinohycha Euglenozoa Mesozoa Haptophyta Nematomorpha Metamunada Placozoa Cercozoa Priapulida Radiozoa Sipuncula Uncultured unicellular Uncultured Metazoa Eukaryote Acknowledgments

A total of 1,138 prey corresponding to 76 items or prey categories were identified, belonging to 8 phyla: Arthropoda, Mollusca, Echiura, Sipuncula, Echinodermata, Ectoprocta, Annelida, and Chordata.

Inversely to density, biomass dominance was shared among other groups besides Polychaeta (27%), as Mollusca (39%), Echinodermata (22%), Sipuncula (8%) and Crustacea (4%).

PCB concentrations in intertidal sipunculan (Phylum Sipuncula) marine worms from the Pacific coast of Costa Rica.

The miscellaneous prey included Sipuncula, Echiura, fish offal (processed fish parts like head, tail, pyloric caeca, etc.), and all other prey organisms not included in the other eight prey categories.

Aplacophora as progenetic aculiferans and the coelomate origin of mollusks as the sister taxon of Sipuncula. Biol.

nov., isolated from a sipuncula (Phascolosoma japonicum).

The following list includes only the newly described taxa; they are presented for each family (except in Hirudinea and Sipuncula) and all in an alphabetical sequence.

Golfingia pugettensis, and Themiste pyroides with a discussion of developmental patterns in the Sipuncula. Ophelia 4:143-171.