Hermit crab

1. EUPAGURUS

3. POPULARLY KNOWN AS HERMIT C

4. HABITATE
• MARINE CRUSTACEAN FOUND IN ALL SEAS
• IT LIVES IN THE EMPTY SHELL OF GASTROPODS

5. BODY..• LONG
• COILED
• COMPRESSED
• ASYMMETRICAL
• BODY DIVIDED INTO
1. CEPHALOTHORAX
2. ABDOMEN

6. BODY
CEPHALOTHORX
• LARGE, BROAD, FLAT
• HEAD BEARS A PAIR OF
STAKED EYES
• BIRAMOUS ANTENNUL
• MOUTH PAIRS ARE HIGHLY
REDUCED
ABDOMEN
• SOFT, FLESHY, ELONGATED
AND SPIRALLY TWISTED TO
FIT WITHIN THE SHELL
• ABDOMINAL APPENDAGES
ABSENT OR REDUCED
• LAST PAIR OF APPENDAGES,
UROPODS ARE HOOK LIKE
USED TO CLING TO THE
SHELL

8. THORAX HAS 5 PAIR OF LEGS
• FIRST PAIR OF THORACIC LEGS ARE CHELATE SO
CALLED CHELIPEDS
USED TO BLOCK SHE’LL MOUTH
• SECOND PAIRS ARE NON CHELATE WALKING LEGS
USED TO LOCOMOTION
• LAST TWO PAIR IS REDUCED

9. Eupagurus have
a faculative
mutalisam with
sea anemone

10. •SEA ANIMON GIVE
CAMOUFLAGE AND
PROTECTION
•CRAB GIVE TRANSPORT AND
SOME FOOD PARTICLES

11. Thank you…