CLASSIFICATION OF CAPRELLA

PHYLUM :- ARTHROPODA (Jointed appendages.)

CLASS :- CRUSTACEA (Exoskeleton thick, antennae 2 pairs, jaws 3 pairs.)

SUB-CLASS :- MALACOSTRACA (Free-living Crustacea with compound eyes, biramous antennules. mandibles. 8 thoracic and 6 abdominal segments having appendages. )

ORDER :- AMPHIPODA (Carapace absent. body elongated and laterally compressed.)

GENUS :- . Caprella

GEOGRAPHICAL DISTRIBUTION

  • It has cosmopolitan distribution. Specially found in U.S.A., Alaska to Santa Barbara.

HABIT AND HABITAT

  • Caprella lives in association of seaweeds, hydroid and polyzoan colonies.

CAPRELLA DIAGRAM

GENERAL CHARACTERSTICS OF CAPRELLA

  • It is a known as no-body crab with peculiar and extremely slender body and limbs.
  • Body has elongated segments, consisting of cephalothorax and abdomen.
  • First thoracic segments fuse with head forming cephalothorax containing eyes, antennules and antennae. Antennae are shorter than antennules.
  • First antennae longer than the second.
  • Thorax has six free segments and contains heart.
  • Gills confined to third and fourth free thoracic segments on which the legs may be wanting while the rest have sub-chelate walking legs.
  • Abdomen reduced to a small knob bearing a pair of rudimentary legs in the male.
  • Male is smaller than the female. Structure of male is like female.
  • It resembles in colour and form with polyzoan hydroid to which it mimics. It holds on by 3 pairs of long posterior prehensile thoracic legs.
CAPRELLA CAPRELLA

IDENTIFICATION

  • The animal contains elongated cephalothorax and all above features, hence it is Caprella.

CAPRELLA
CAPRELLA
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