Tanner crabs consume not only a variety of infaunal prey, including bivalves, polychaetes
, and other crustaceans, but also detrital material (Jewett and Feder, 1983), which presumably occurs in higher concentrations in silty and muddy sediments than in coarser sediments.
were numerical dominants at all sites followed by crustaceans (Fig.
Shrimp occurred most often (73% FO), followed by echiurid worms (27% FO), polychaetes
(17% FO), and cephalopods (10% FO).
Lake Nhlange had a community dominated by polychaetes
, chironomid larvae, amphipods and the bivalve Brachidontes virgiliae (Barnard, 1964).
Based on regional topography and the rich benthic and pelagic faunal association comprising brachiopods, trilobites, tentaculitoids, scolecodont-bearing polychaetes
, graptolites, chitinozoans and abundant sclerobionts, it is interpreted as having been deposited in a low-energy proximal shelf environment below the photic zone (Calner et al.
macronemus feed over sand like other mullid fishes, thrusting the pair of sensory barbels on the chin into sand to reveal the usual prey of small crustaceans, polychaetes
, and sipunculids.
are sometimes referred to as bristle worms.
In some of these regions, predatory polychaetes
were completely absent.
A team of scientists led by Plymouth University, and including colleagues from the Naples Zoological Station in Ischia; the Marine Ecology Laboratory ENEA in La Spezia, Italy; the University of Texas Galveston; and the University of Hull, conducted a three-year research project into the potential mechanisms that species of worm polychaetes
use to live around the underwater CO2 vent of Ischia in Southern Italy.
With less organic matter to feed on, tiny organisms like amphipods and polychaetes
-- species that constitute a critical amount of flounder food -- declined significantly.
35) Besides bacteria and diatoms, other species like barnacles, serpulidae, ascidians, bryozoans, algae, and polychaetes
are the frequent fouling organisms encountered on hard substrates in Mar del Plata harbor.
The majority of polychaetes
and molluscs (both bivalves and gastropods), as well as some crustacean species, significantly increased their biomass and biomass proportion within invertebrate communities along the human-induced stress gradient including eutrophication.