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Starfish, such as the ochre sea star (Pisaster ochraceus) and the reef sea star (Stichaster australis), have become widely known as examples of the keystone species concept in ecology. The tropical crown-of-thorns starfish ( Acanthaster planci ) is a voracious predator of coral throughout the Indo-Pacific region, and the Northern Pacific ...
Heliaster kubiniji is a species of starfish in the order Forcipulatida. It is commonly known as the gulf sun star , the common sun star or estrella de mar de golfo and it occurs in the intertidal zone of the Pacific coast of California, Mexico and Nicaragua.
The genus Linckia, as is true of other species of starfish, is recognized by scientists as being possessed of remarkable regenerative capabilities, and endowed with powers of defensive autotomy against predators: [citation needed] Although not yet documented, L. laevigata may be able to reproduce asexually, as does the related species Linckia ...
The crown-of-thorns starfish (frequently abbreviated to COTS), [1] Acanthaster planci, is a large starfish that preys upon hard, or stony, coral polyps (Scleractinia). The crown-of-thorns starfish receives its name from venomous thornlike spines that cover its upper surface, resembling the biblical crown of thorns. It is one of the largest ...
When L. clathrata loses part or all of an arm through predation, it can regenerate the limb.The damaged area is sealed off, and a new small arm-tip appears within a week. Subsequent development is at the rate of about 3.7 mm (0.15 in) a month, although this slows down when regeneration is nearly complete.
Like other starfish in the family Asteriidae, Marthasterias glacialis is a predator and feeds mostly on bivalve molluscs and other invertebrates. [6] It has been found that secondary metabolites known as saponins , found within the starfish's tissues, have a dramatic effect on the whelk Buccinum undatum .
Australia is infamously full of things that can kill you. One of the most fearsome is the saltwater crocodile, the world’s largest reptile. If you invade this bad boy’s space, he will clamp ...
Larger starfish take larger prey. [3] It is the dominant predator in the tidal and shallow subtidal zones of the Falkland Islands. A study of the community in the Beagle Channel associated with the giant kelp Macrocystis pyrifera showed A. antarctica as being at the top trophic level , feeding on the herbivores grazing on the seaweed, on the ...