Acanthaster Planci


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Acanthaster Planci

 

a starfish of the phylum Echinodermata measuring as much as 50 cm across. A. planci is found on coral reefs in the tropical regions of the Pacific and Indian oceans. Its body is covered with numerous sharp needles reaching 3 cm in length. Stings are extremely painful and cause severe poisoning in humans. The starfish feeds on polyps and madrepores. In the 1960’s massive numbers of the starfish appeared in many regions and caused the complete destruction of corals on extensive areas of reefs (for example, on Guam, in some areas of the Great Barrier Reef of Australia, and on the Fiji Islands). The principal control measure is the destruction of the starfish with injections of Formalin, which are administered by teams of divers.

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The findings, published in the journal BMC Biology, could play an important role in controlling the feeding behavior of the crown of thorns starfish (Acanthaster planci), which feeds on coral and is having a devastating impact on the Australian Great Barrier Reef.
In echinoderms, light flashes directed at optical cushion photoreceptors of the crown-of-thorns starfish (Acanthaster planci) elicit voltage changes (Petie et al., 2016).
The starfish, scientific name Acanthaster planci, is a venomous coral-eating starfish that threatens corals, which are living organisms that take years and centuries to rehabilitate.
| WHAT type of creature is the crown-of-thorns, acanthaster planci? | WHERE in Africa are the Efik people found?
Major genetic differences between crown-of-thorns starfish (Acanthaster planci) in the Indian and Pacific oceans.
Investigation of the anti-cancer potential of Acanthaster planci starfish extract along with Tamoxifen (a non-steroidal selective estrogen receptor modulator) in human breast cancer cells indicated that the sea star extract compared with Tamoxifen ([IC.sub.50]=15.6 [micro]g/ml) was more efficient in the early arrest of cell growth and recruitment of the apoptosis process (25).
Typical phenomena in the coral reef are, for example, coral bleaching under environmental stress and leading to widespread devastation of the corals by the outbreak of a starfish Acanthaster planci that feed on corals.
Bacteria on the surface of crustose coralline algae induce metamorphosis of the crown-of-thorns starfish Acanthaster planci. Mar.
The Crown of Thorns starfish (Acanthaster planci) is covered in poisonous spines and is infamous throughout the Indian and Pacific oceans and the Red Sea as its population outbreak spells danger to the coral reefs.
Orden valvatida Perrier, 1884 Familia Oreasteridae Fisher, 1911 Genero Nidorellia Gray, 1840 Nidorellia armata (Gray, 1840) Genero Pentaceraster Doderlein, 1916 Pentaceraster cuminigi (Gray, 1840) Familia Acanthasteridae Sladen, 1889 Genero Acanthaster Gervais, 1841 Acanthaster planci (Linnaeus, 1758) Familia Mithrodiidae viguier, 1878 Genero Mithrodia Gray, 1840 Mithrodia bradleyi (verrill, 1870) Familia Ophidiasteridae verrill, 1870 Genero Pharia Gray, 1840 Pharia pyramidatus (Gray, 1840) Genero Phataria Gray, 1840 Phataria unifascialis (Gray, 1840) Orden Forcipulatida Perrier, 1884 Familia Heliasteridae viguier, 1878 Genero Heliaster Gray, 1840 Heliaster kubinijii (Xantus, 1860)
In fact two of the reef's worst enemies--the crown of thorns starfish (Acanthaster planci) and a species of the sea urchin Diadema--are members of this phylum.