CLASSIFICATION OF TEREBELLA

PHYLUM :- ANNELIDA (Metamerically segmented, coelomate and laterally symmetrical. )

CLASS :- POLYCHAETA (Many setae, clitellum absent. )

ORDER :- SEDENTARIA  (Tubicolous, sedentary and proboscis not-protrusible, without jaws or teeth.)

GENUS :- Terebella

GEOGRAPHICAL DISTRIBUTION

  • It is found in Europe, U.S.A., Woods Hole region and Vineyard Sound to Bay of Fundy.

HABIT AND HABITAT

  • Terebella is a marine, burrowing, sedentary annelid. The animal burrows in tubes in sand. Some species live 10 to 230 fathoms deep.

TEREBELLA

GENERAL CHARACTERSTICS OF TEREBELLA​

  • Body is elongated, cylindrical and divided into head and trunk.
  • Head is horseshoe-shaped, made up of prostomium and peristomium.
  • Prostomium contains number of long filliform bushy tentacles. 
  • Trunk contains about 60 segments reddish in colour and divided into anterior region or cirri, middle region with cirri and posterior region without cirri.
  • Gills or branchiae are found on the dorsal surface of few anterior segments and they form 4 wide comb like branches on a single peduncle. 
  • Anterior 113 body is thickened while major part of the posterior body tapers narrowly. 
  • Setae of anterior segments are well developed while reduced in posterior segments.
TEREBELLA

IDENTIFICATION

  • The animal the head contains bushy tentacles and all above characters and hence it is Terebella.

TEREBELLA
TEREBELLA
OUR POSTS

Leave a Comment

Your email address will not be published. Required fields are marked *