Turritopsis nutricula

Turritopsis nutricula

name = "Turritopsis nutricula"

image_width = 240px
regnum = Animalia
phylum = Cnidaria
classis = Hydrozoa
ordo = Hydroida
familia = Clavidae
genus = "Turritopsis"
species = "T. nutricula"
binomial = "Turritopsis nutricula"
binomial_authority = McCrady, 1858

"Turritopsis nutricula" is a hydrozoan with a life cycle in which it reverts back to the polyp stage after becoming sexually mature. It is the only known case of a metazoan capable of reverting completely to a sexually immature, colonial stage after having reached sexual maturity as a solitary stage Harv|Piraino|Boero|Aeschbach|Schmid|1996|p=302. It does this through the cell development process of transdifferentiation. Theoretically, this cycle can repeat indefinitely, rendering it effectively immortal.


"Turritopsis nutricula" has a diameter of 4-5 millimeters. It has an equally high and bell-shaped figure. The walls are uniformly thin. The bright red, big stomach has a cruciform shape in its cross section. Young specimens have only eight tentacles along the edge, while adult specimens have 80-90 tentacles.

Life cycle

The fertilized eggs develop in the stomach and in the screen formed by the cave in the jellyfish Planula. The eggs are then planted on the seabed in polyp colonies. The jellyfish hatches after two days. The jellyfish becomes sexually mature after a few weeks (the exact duration depends on the ocean temperature; at 20°C it is 25 to 30 days and at 22°C it is 18 to 22 days).


Jellyfish usually die after propagating, however the "Turritopsis nutricula" has developed the ability to return to a polyp state. This is done through a cell change in the external screen (Exumbrella). The ability to reverse the life cycle is unique in the animal kingdom, and allows the jellyfish to bypass death, rendering the "Turritopsis nutricula" immortal.


"Turritopsis nutricula" are found in temperate to tropical regions in all of the world's oceans.


* [http://8e.devbio.com/preview_article.php?ch=2&id=6 Cheating Death: The Immortal Life Cycle of "Turritopsis"]

Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Turritopsis nutricula — Systematik Klasse: Hydrozoa Ordnung: Anthomedusae Unterordnung: Filifera Familie: Oc …   Deutsch Wikipedia

  • Turritopsis nutricula — ? Turritopsis nutricula Научная классификация Царство: Животные Тип: Стрекающие Класс: Гидроидные …   Википедия

  • Turritopsis nutricula — Turritopsis nutricula …   Wikipédia en Français

  • Turritopsis nutricula —   Turritopsis nutricula Clasificación científica Reino …   Wikipedia Español

  • Turritopsis nutricula — Turritopsis nutricula …   Wikipédia en Français

  • медуза turritopsis nutricula — сущ., кол во синонимов: 2 • единственное на планете бессмертное существо (2) • медуза (25) …   Словарь синонимов

  • Turritopsis — Turritopsis …   Википедия

  • Turritopsis dohrnii — Turritopsis dohrnii …   Wikipédia en Français

  • Immortalité — Fountain of Eternal Life à Cleveland (Ohio), aux États Unis[1]. L immortalité désigne le fait d’échapper à la mort et d’exister pour une période de temps indéfinie, voire éternel …   Wikipédia en Français

  • Death — For other uses, see Death (disambiguation) and Dead (disambiguation). Dying redirects here. For the process of coloring, see Dyeing. For other uses, see Near death (disambiguation). The human skull, widely considered a symbol of death Death is… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.