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  1. jellyfish Duque, Maria Angelica M. Gotuato, Geneizzel B.

  2. The discussion’s main focus is on: Box jellyfish

  3. Outline of the discussion

  4. Box jellyfish Kingdom AnimaliaPhylum CnidariaSub-phylum MedusozoaClass Cubozoa

  5. Box jellyfish

  6. Parts of a jellyfish

  7. Each tentacle has about 500,000 cnidocytes, containing nematocysts, a harpoon-shaped microscopic mechanism that injects venom into the victim.

  8. Toxins present • Proteinaceous toxins of C. rastoni • Toxin a and toxin b

  9. Nucleotide and amino acid sequences of CqTX-A

  10. With thousands of stinging cells that can emit deadly venom from tentacles that can reach ten feet in length, the 50 or so species of box jellyfish have long been of interest to scientists and to the public.

  11. Chironexfleckeri

  12. the most venomous marine creatures on the planet and, in Australia, have killed almost 70 people in the last 120 years. In the Northern Territory, fatal box jellyfish stings have been reported in every month of the year except August.

  13. Most stings occur in shallow water when the wind is light and the water calm (although stings have occurred in rough weather, in very dirty, deeper water). Victims usually blunder into tentacles trailing behind the jellyfish which are almost invisible in the water. Most stings occur on the lower legs and body.

  14. Jellyfish Sting Symptoms • Symptoms include an intense, stinging pain, itching, rash, and raised welts. • The progressive effects of a jellyfish sting may include nausea, vomiting, diarrhea, lymph node swelling, abdominal pain, numbness/tingling, and muscle spasms.

  15. Jellyfish Sting Symptoms • Severe reactions can cause difficulty breathing, coma, and death. • A sting from a box jellyfish or other venomous types of jellyfish can cause death in minutes.

  16. VICTIMS OF BOX JELLYFISH

  17. TREATMENT • Get out of the water. • Rinse the affected area with sea water. • Remove the tentacles on your skin.

  18. RECEPTORS • mixture of polypeptides and proteins • HYALUNORIDASE • HISTAMINE • fibrolysins, kinins, phospholipases

  19. HYALUNORIDASE

  20. HISTAMINE

  21. Thank You !