Abundance patterns (19841987/1994-1998) of
polychaete worms (Annelida) from an estuarine tidal flat, Pacific, Costa Rica.
At Holiday and Pillar, the depth distribution of
polychaete worms in 2011 (Fig.
Among the 236 species of
polychaete worms from the deep western North Atlantic, 64 percent are undescribed, and among bivalve mollusca, one of the better known groups of the deep-sea benthos, 105 new species (about 43 percent of all species collected) have been described over the last 20 years.
Polychaete worms of the family Paraonidae Cerruti, 1909 (Polychaeta, Sedentaria).
Partner fidelity and egg reciprocation in the simultaneously hermaphroditic
polychaete worm Ophryotrocha diadema.
ABSTRACT Biotic interactions between brachiopods and spionid
polychaete worms, collected around San Juan Islands (USA), were documented using observations from live-collected individuals and traces of bioerosion found in dead brachiopod shells.
The test shrimp were reared in artificial seawater and fed fresh
polychaete worms, Neanthes japonica (Izuka) for 30 days.
Sex determination and genetic balance of Ophryotrocho puerillis, a hermaphrodite
polychaete worm. Nature 207: 1208-1209.
Organization of early larvae of the
polychaete worm Chaetopterus variopedatus (Spiomorpha, chaetopteridae).
The scans of the pterosaur coprolites revealed many microscopic food remains including foraminifera (small amoeboid protists with external shells), small shells of marine invertebrates and possible remains of
polychaete worms.
The Western Terrestrial Garter Snake (Thamnophis elegans) is a versatile predator on a diverse spectrum of animal species, including aquatic and terrestrial mollusks (snails, slugs) and annelids (
polychaete worms, leeches, earthworms), intertidal marine crustaceans (small crabs), terrestrial arthropods (insects, spiders), and members of every vertebrate class, especially amphibians and fish, less often reptiles, small mammals, and birds (Cunningham 1955; Campbell 1969; White and Kolb 1974; Anderson 1977; Gregory 1978; Kephart and Arnold 1982).
Chronic acidification resulted in decreased abundance of spionid and syllid
polychaete worms. Episodes of acidification may have substantial impacts on the food web that are additive to impacts of chronic exposure (Rosemond & Reice 1992); however, this study only considered a 2-wk period of extreme acidification.
Researchers found that some species of
polychaete worms are able to modify their metabolic rates to better cope with and thrive in waters high in carbon dioxide (CO2), which is otherwise poisonous to other, often closely-related species.
Fauchald, The
Polychaete Worms. Definitions and Keys to the Orders, Families and Genera, vol.
