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The Immortal Jellyfish

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by

Jumelle Rebalbos

on 11 July 2015

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Transcript of The Immortal Jellyfish

The Immortal Jellyfish
by: Jumelle Rebalbos
-OUTLINE-
Species Name
Classification
Morphological Characteristics
Habitat
Diet
Reproduction
Conservation
Interesting Facts
At first, the immortal jellyfish was known as the
Turritopsis nutricula
but recently, it was changed into
Turritopsis dohrnii.
Species Name
Kingdom
: Animalia
Phylum:
Cnidaria
Class:
Hydrozoa
Subclass:
Hydroidolina
Order:
Athoathecatae
Suborder:
Filifera
Family:
Oceaniidae
Genus:

Turritopsis
Species:

T. dohrnii
Classification
Polyp Form
Sparingly branched colonies
Stem and branches are covered by a firm perisarc
Produces medusa buds.
Medusa Form
Bell-shaped
Diameter of 3.3 mm
Adult medusa form has a height of 2.7 mm with about 14-32 tentacles
Newly born medusae have 8-12 tentacles
Tentacles have terminal swellings
The gonads are brownish in color
Has four rust-colored dots between the radial canal
Originated in the Caribbean Sea
Found in temperate to tropical regions of the world's oceans
Started to spread across the world through cargo ships
Turritopsis dohrnii
are carnivorous animals. These species of jellyfish usually eat the following:
Plankton
Small Molluscs
Fish Eggs
Morphological Characteristics
Asexual Reproduction
Polyps of
Turritopsis dohrnii
reproduce asexually through budding. The buds produced develops into young medusae that swims freely in the ocean.
Sexual Reproduction
Habitat
Diet
Reproduction
Conservation
Interesting Fact 1
Interesting Fact 2
Mature female medusae develop their eggs at their gonads which are located in the walls of their manubrium
Mature male medusae produce and release their sperm to swim freely in the sea
Mature eggs from female medusae are spawned and fertilized by the released sperm
Fertilized eggs develop into planula larvae which then settles to the ocean floor and eventually develop into polyp colonies
Turritopsis dohrnii
are relatively many in terms of the number of their species. Currently, these animals are part of the least concerned animals of the world. Although, some scientists culture them in the laboratory in order to study them further.
Jellyfishes are between 95% - 98% water and do not need respiratory systems. The oxygen enters their body through diffusion. The process is possible because jellyfishes have very thin skin or body tissue.
Biological Immortality
Turritopsis dohrnii
has the ability of transdifferentiation. Transdifferentiation enables them to become biologically immortal. Once stressed, physically assaulted, sick or old, the medusae transforms back into its polyp form.
THANK YOU! :)
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