CLASSIFICATION OF SYNAPTA

PHYLUM :- ECHINODERMATA (Coelomate, pentaradiate and spiny skinned animals with vascular system.)

SUB-PHYLUM :- ELEUTHEROZOA (Non-pedicellate and free-living.)

CLASS :- HOLOTHUROIDEA (Body orally and aborally elongated.)

ORDER :- SYNAPTIDA (Without tube feet.)

GENUS :- Synapta

GEOGRAPHICAL DISTRIBUTION

  • It is found in Europe, Pacific coast and Bermuda.

HABIT AND HABITAT

  • Synapta inhabits under stones and occasionally in the sand near low water mark.

SYNAPTA

GENERAL CHARACTERSTICS OF SYNAPTA

  • Synapta is a whitish elongated, worm-like, semitransparent and burrowing holothuroid. Size few to 60 cm.
  • Mouth and anus are found at opposite ends.
  • Mouth is enclosed by buccal membrane. Mouth opening is surrounded by 10 to 25 small bipinnate oral tentacles. Tentacles capture large and small zoophytes.
  • Tube feet, respiratory tree, ossicles and cuverian tubules are absent. 
  • Longitudinal muscle bands are distinctly seen through transparent body. 
  • Some peculiar anchor plates are found in the thin body wall. 
  • When irritated, the animal show autotomy i.e., breaks into two or more pieces, which regenerate into new individuals.
SYNAPTA

SPECIAL FEATURES

  • Thyone is famous for its power of autotomy and regeneration. When irritated, the bodywall ruptures and organs are eviscerated (ejected out). The animal regenerates the missing part.

IDENTIFICATION

  • The animal contains has transparent body and all above features hence it is Synapta.

SYNAPTA
SYNAPTA
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