CLASSIFICATION OF PALAEMON (SHRIMP)​

KINGDOM :- ANIMALIA (Multicellular eukaryotic organisms)

PHYLUM :- ARTHROPODA (Jointed appendages.)

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

CLASS :- MALACOSTRACA (6 abdominal segments having body distinctly segmented.)

ORDER :- DECAPODA (Carapace present.)

FAMILY :-  PALAEMONIDAE (Abdomen well developed and hard.)

GENUS :- Palaemon (Shrimp)

GEOGRAPHICAL DISTRIBUTION

  • Commonly found in India.

HABIT AND HABITAT

  • Palaemon is found in fresh-water streams, rivers, ponds and lakes. The animal is nocturnal, hiding at the bottom during the day and coming to the surface at night in search of food.

PALAEMON (SHRIMP)​

GENERAL CHARACTERSTICS OF PALAEMON (SHRIMP)​

  • Commonly called as Shrimp.
  • Body is elongated, spindle-shaped, bilaterally symmetrical and deep orange coloured when preserved and measuring about 25 cm in length. 
  • Divisions of the body are cephalothorax, abdomen and telson.
  • Cephalothorax is made up of 5 head and 8 thoracic segments. Carapace is anteriorly produced into sawtoothed rostrum. There are two prominent eyes on the head. 
  • Abdomen is made up of 6 segments. It is dorsally rounded, laterally compressed and nonnally bent under the cephalothorax so that the animal looks like comma. 
  • There are 19 pairs of appendages, one pair in each segment. The cephalic appendages comprise of antennules, antennae, mandibles, maxillulae and maxillae. A large platelike antennal used as a rudder in swimming. 
  • Thoracic appendages are I maxillipedes, II maxillipedes, III maxillipedes and 5 pairs of jointed walking legs. 
  • First abdomen somite is not reduced. Rest five abdominal segments contain paired biramous swimming pleopods. Vlth abdominal segment contains paired uropods and a telson. Development includes nauplius larva.
PALAEMON (SHRIMP)​

IDENTIFICATION

  • The animal is larger than Penaeus, contains spatulate uropods and all above characters, hence it is Palaemon

PALAEMON (SHRIMP)​
PALAEMON (SHRIMP)​
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