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.
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.
Reciprocation, reproductive success, and safeguards against cheating in a hermaphroditic polychaete worm
, Ophryotrocha diadema Akesson, 1976.
The consumption of soft-bodied prey, such as polychaete worms
, was not influenced by claw loss.
It will focus on the group of predominantly deep-sea polychaete worms
from the subfamily Hyalinoeciinae with worldwide distribution, remarkable diversity at great depths, and possible progenetic origin.
In the eastern Bering Sea, Walleye Pollock (Theragra chalcogramma) and Chionoecetes crabs were the main prey items, with minor contributions from polychaete worms
, shrimps, and other crabs (Mito 1974; Brodeur and Livingston 1988).
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.
The croaker had a more pronounced ontogenetic diet shift, with the smallest size classes (10-25 mm) consuming mostly copepods, and larger juveniles having diets dominated by amphipods, polychaete worms
, shrimp, crabs, and fish.
The book sets out the implications of warming/melting trends for all manner of Arctic marine life, from microscopic polychaete worms
feeding in Arctic ice, to the appearance of killer whales in regions where sightings were once rare, if not unknown, to the colonies of sea birds threatened by changes to the food chain.
Without suitable habitats or prey choices, polychaete worms
didn't have a chance.
These polychaete worms
are marine and locally abundant but are rarely seen because they spend most of the year burrowed in the coral reefs.
It supports a rich invertebrate fauna, mainly consisting of polychaete worms
, mollusks, and brachyuran crabs.