CLASSIFICATION OF GLYCERA
PHYLUM :- ANNELIDA (Metamerically segmented, coelomate and laterally symmetrical. )
CLASS :- POLYCHAETA (Many setae, clitellum absent. )
ORDER :- ERRANTIA (Free-swimming or burrowing, pharynx protrusible, provided with jaws and teeth. )
GENUS :- Glycera
It is found in U.S.A., North Carolina to Bay of Fundy and South Carolina to Cape Cod.
HABIT AND HABITAT
Glycera is marine, polychaet living in cylindrical burrows which are made by their proboscis, in the sand and mud, in shallow water. They burrow very rapidly.
GENERAL CHARACTERSTICS OF GLYCERA
- Glycera is commonly called as ‘Smooth bloodworm’.
- Body is elongated, cylindrical measuring 20 to 25 cm in length and adapted for burrowing life.
- Body is red coloured with small parapodia and an annulated prostomium.
- Animal makes cylindrical tunnels by its proboscis for dwelling.
- Prostomium is short, narrow and conical, having four small tentacles and two rudimentary palps.
- Due to burrowing life the parapodia are reduced in size bearing compound chaetae and special retractile gills.
- Blood vessels are absent, but the perivisceral fluid functions as circulatory fluid, having red corpuscles containing haemoglobin.
- Worm is quickly recognized by its long, tubular proboscis with 4 sharp teeth.
- Glycera is utilized as fish bait.
The animal contains long proboscis with 4 sharp teeth and all above characters hence it is Glycera.