Trochophore

As trochophora ( gr trochos - Wheels, tires, phorein - carry) are mostly free-floating plankton matic larvae of most polychaetes ( Polychaeta ) and other annelids, as well as that of some other animal groups, including some molluscs ( Mollusca ) and the Goblet of worms ( Entoprocta ) denotes. These animals are summarized under the term " Trochozoa ", a subset of the Lophotrochozoa. Not all Protostomia have Trochophorae. Trochophoralarven are pear-shaped to round and have eyelashes wreaths that help them move around strudelnd. They feed at times of stored yolk reserves and later of unicellular algae, flagellates or bacteria.

To further develop a settlement, that the settlement of planktonic larvae on a substrate is usually necessary, which is caused by specific chemical signals or a complex combination of such inductors.