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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 .
Acanthaster is a bitypic genus of large and venomous starfish placed in its own family, Acanthasteridae. Its two members are known as crown-of-thorns starfish. Acanthaster are native to coral reefs in Indo-Pacific region. [2]
The crown-of-thorns starfish has few other natural predators, and are capable of destroying large sections of coral reef. The struggle between a starfish and an Atlantic triton can last up to an hour before the seastar is subdued by the snail's paralyzing saliva. Tritons can be observed to turn and give chase when the scent of prey is detected.
C. tritonis is one of the few animals to feed on the crown-of-thorns starfish, Acanthaster planci. Occasional plagues of this large and destructive starfish have killed extensive areas of coral on the Great Barrier Reef of Australia and the western Pacific reefs. The triton has been described as tearing the starfish to pieces with its file-like ...
A Crown-of-thorns starfish outbreak in conjunction with anthropogenic stressors can cause irreversible reef-system damage. [ 45 ] [ 46 ] The Kuroshio Current controls patterns of connectivity between coral reefs (as well as other marine organisms with a larval phase), transporting larvae from southerly coral reefs to downstream reefs along the ...
In Okinawa, fishermen observed numerous individuals of the predatory crown-of-thorns starfish (Acanthaster planci) gathering around the remains of the internal organs of flower urchins. [63] A follow-up study by Japanese researchers in 2001 confirmed that the viscera of flower urchins could indeed attract crown-of-thorns starfish in both ...
Yabiji from the north. Yabiji (八重干瀬, Miyako: /jaːpɨ̥ɕi/ [1]), also known as Yaebiji, Yaebise, Yaebishi, and Yapiji and appearing on some historical Western nautical charts as Providence Reef, is the largest coral reef group in Japan.
Acropora acuminata is a species of acroporid coral found in Australia, the Red Sea, the central Indo-Pacific, Japan, the northern Indian Ocean, the East China Sea, southeast Asia, and the western Pacific Ocean. It is particularly susceptible to coral bleaching, the crown-of-thorns sea star (Acanthaster planci), and