CYANEA

CLASSIFICATION OF CYANEA

PHYLUM :- COELENTRATA (Tissue grade, diploblastic and acoelomate. )

CLASS :- SCYPHOZOA (Medusa well developed, hydroid reduced.)

ORDER :- SEMAEOSTOMEAE (Free-swimming scyphomedusae with umbrella-like disk and oral lobes.)

FAMILY :- CYANEIDAE (Tentacles clustered, branched and radiating.)

GENUS :- Cyanea

GEOGRAPHICAL DISTRIBUTION

  • It is found on the coastal waters of America, polar region and Pacific coast.

HABIT AND HABITAT

  • Cyanea is the largest, solitary, bioluminescent and marine medusa.

GENERAL CHARACTERSTICS OF CYANEA

  • Commonly called as Sun-jelly or Sea-blubber. 
  • Monstrous red or wine-coloured jelly fish. 
  • Largest known scyphozoa measuring 5 cm to 2 metres across the disk and some tentacles measuring 40 metres in length. 
  • Body divided into sub-umbrellar and ex-umbrellar surfaces. 
  • Margin of umbrella contains 8 bilobed lappets and 8 rhopalia in each niche between lappets .
  • Eight adradial V-shaped clusters of tentacles spring from sub-umbrella. 
  • 4 angles of mouth are drawn into 4 long, wide and voluminous oral arms. Radial canals extend into the rhopalia and tentacles. Circular canal is absent. Gonads prominent. 
  • It produces burning sensation when in contact with human body. 
  • It swims by rhythmic contractions of umbrellar surfaces with the help of radial muscles and coronal muscles. 
  • Cyanea also responds to mussel juice, proteins, peptones, amino acids but not to sugars, starches or glycogen.
CYANEA

IDENTIFICATION

  • The animal has V -shaped clusters of tentacles, voluminous oral arms and all above characters, hence it is Cyanea.
CYANEA
CYANEA
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