Sacculina

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 SACCULINA



CLASSIFICATION

PHYLUM: ARTHROPODA (Jointed appendages).

SUB-PHYLUM: CRUSTACEA (Biramous appendages).

CLASS: CIRRIPEDIA (Adult sessile or

parasitic).


COMMENTS:

•Commonly called as "Root-headed barnacle".

•Parasitizes crabs. Zoologists were able to discover its real crustacean nature by studyings it embryology having 1st stage nauplius larva.

• Adult loses all arthropodan characters & appears like a fleshy tumour attached to the abdomen of the crab on ventral side & lead a parasitic life on decapod sructures.

•It sends root like structures like mycelium of fungus through peduncle in each appendages of crab & in the body to derive nutrition.

• Appendages, segmentation, mouth, anus, alimentation absent.

•Hermaphroditic,

• Presence of sacculina causes development of many changes in secondary sexual characters of the host.



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