Binomial name Turritopsis nutricula McCrady, 1857[1] Turritopsis nutricula is a hydrozoan with a life cycle in which it reverts 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 (Piraino et al. 1996, p. 302). It does this through the cell development process of transdifferentiation. Theoretically, this cycle can repeat indefinitely, rendering it biologically immortal.
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 (68 °F) it is 25 to 30 days and at 22 °C (72 °F) it is 18 to 22 days).
Immortality 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 probably unique in the animal kingdom, and allows the jellyfish to bypass death, rendering the Turritopsis nutricula biologically immortal.
Recuerda que si te gusta las películas de terror viscoso y sangriento… Tienes una cita este fin de semana en Lloret de mar (Girona.
Ya puedes ver la programación del festival de viernes, sábado y domingo. Además podéis también comprar las entradas anticipadas on-line, todo esto en nuestra web tenebrosamente putrefacta: www. festerror. es/tienda. html
¡¡Os esperamos a todos, tenemos litros y litros de hemoglobina para vosotros!!
? El próximo sábado 29 de Noviembre, NARCO celebran el final de su gira con una fiesta brutal, llena de sorpresas, en su ciudad. En la Sala Q de Sevilla, y acompañados de los chiclaneros TRASHTUCADA. Además, después de los conciertos habrá sesiones con Dj Flow, Amnésico, Bi2 vs Kaverna y Dj Muerte.
Filmmakers and screenplay writers: Don’t forget to submit your horror film or script to Australia’s leading genre film event!
LATE DEADLINE: December 19, 2008 (postmarked) Final Deadline: December 31, 2008 (postmarked)
For more details simply click on the above artwork to visit the official A Night of Horror International Film Festival website: www. anightofhorror. com or enter online at: www. withoutabox. com
LA OSCURA CEREMONIA & SPOOKY HIGH SCHOOL PRESENTS:
SPOOKY PROM HOLLAND The Original Spooky Prom party with ghouls and deejays: Don Diablo and more... Come to our zombie party and try to be the best zombie, your effort will be compensated with our terrifying surprises..
SATURDAY JANUARY 24TH Venue: DB's (CARTESIUSWEG 90A 3534 BD UTRECHT) - Holland 20 H.
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