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Crown-of-thorns starfish

Acanthaster planci

Tentang nama: Its common name comes from the long, thornlike spines that cover its upper surface, which resemble the biblical crown of thorns.1

Perlu jumpa doktorJangan sentuhJarang membawa maut, tetapi jika durinya menikam kamu, jumpa doktor.

Landak laut, tapak sulaiman & cacing

Duri berbisaMakan: Daging

Bahaya kepada manusia: SeriusJika durinya menikam kamu, jumpa doktor. Kematian sangat jarang berlaku.

The crown-of-thorns starfish is a large starfish with long, sharp spines that look like a crown of thorns. It lives on coral reefs across the Indo-Pacific, from the Red Sea to the west coast of Central America, and it is most common around Australia. It feeds on hard coral, so it can change the reefs it lives on.1

Hidup di

Indo-Pacific: Red Sea, East African coast, Indian Ocean, Pacific Ocean to west coast of Central America; most common around Australia1

Lautan Hindi, Lautan Pasifik, Laut Merah, Laut Karang, Laut Filipina, Laut China Selatan, Laut Andaman, Laut Arab & Teluk Parsi, Laut Timor & Laut Arafura, Teluk Benggala

Laman utama

It lives where coral reefs or hard coral communities occur in tropical and subtropical waters.1

Panjang

25 cm hingga 35 cm (9.8 in hingga 1.1 ft)1

Kelajuan maksimum

kira-kira 0.02 km/j (0.01 mph)

Berenang, anggaran kasar

Apa yang ia makan?

It is a coral predator that climbs onto living coral using its tube feet and pushes its stomach out over the coral. Digestive enzymes turn the coral tissue into liquid, which it absorbs, leaving a white scar of bare skeleton.1

Gambar Crown-of-thorns starfish — Crown-of-thorns starfish. Gambar: John Hepburn. CC BY 4.0, Wikimedia Commons.

Cara mengenalinya

Adults are normally 25 to 35 cm across.1
Up to 21 arms, with long, stiff, very sharp spines that are 4 to 5 cm long on the top and sides of the arms.1
Colour varies with diet or region: purple, purple-blue, reddish grey or brown with red spine tips, or green with yellow spine tips.1
The body is flexible and can bend and twist around coral surfaces.1

Sering dikelirukan dengan: A close relative, Acanthaster brevispinus, lives on soft sea floors at moderate depths rather than on coral reefs. The two are considered sibling species.1

Kuasa bisa

Duri berbisa

Duri tajam membawa bisa. Memijak atau memegangnya menyakitkan.

Apa kesan bisanya?

The spines do not inject venom. When they pierce skin, tissue containing saponins (detergent-like chemicals) is left in the wound. In humans this causes a sharp, stinging pain that can last several hours, persistent bleeding, and nausea and swelling that may last a week or more.1

Berapa bahaya ia kepada manusia?

Bahaya kepada manusia: SeriusJika durinya menikam kamu, jumpa doktor. Kematian sangat jarang berlaku.

The spines can cause sharp pain, long-lasting bleeding, nausea and swelling. Brittle spines can break off and stay in the tissue.1

Jika durinya menikam kamu

Spines that become embedded in the tissue must be removed surgically.1
Rendam luka dalam air panas, sepanas yang orang itu boleh tahan tanpa melecur, dan dapatkan bantuan perubatan untuk mengeluarkan duri. Jangan korek sendiri.

Sentiasa hubungi nombor kecemasan dahulu (112, 000, 911). Ini panduan pertolongan cemas umum, bukan nasihat perubatan. Asas pertolongan cemas

Kekal selamat

Jangan sesekali sentuh, tangkap atau usik haiwan liar, walaupun yang kecil, dan walaupun ia nampak tidur atau mati.
Beri ia ruang. Jika kamu terjumpa, bertenang, undur perlahan-lahan dan biarkan ia pergi.
Jika durinya menikam kamu: bertenang, jangan bergerak, hubungi nombor kecemasan (112, 000, 911) atau pergi ke hospital dengan segera. Ingat rupanya, gambar boleh membantu.

Ia bukan mahu memburu kamu. Ia guna bisanya untuk menangkap makanan atau melindungi diri, dan ia lebih suka bersembunyi. Lagi tentang keselamatan

Di mana di dunia?

Afrika Asia Eropah Amerika Utara Amerika Selatan Australia & Oceania Lautan Pasifik Lautan Hindi Laut Merah Laut Karang Laut China Selatan Laut Filipina Laut Andaman Laut Arab & Teluk Parsi Laut Timor & Laut Arafura Teluk Benggala

Berapa besar ia?

Berapa panjang ia?

sepanjang 11 blok binaan mainan disusun sebarislebih perlahan daripada siput kebun

Berapa besar Crown-of-thorns starfish berbanding KAMU?

Hanya matematik dalam pelayar kamu. Tiada apa yang disimpan atau dihantar ke mana-mana.

Berapa laju ia?

Kuda laut kira-kira 0.0015 km/j (0 mph)

Crown-of-thorns starfish kira-kira 0.02 km/j (0.01 mph)

Siput taman kira-kira 0.05 km/j (0.03 mph)

berguna untuk diketahui

Fakta

An individual starfish can consume up to 6 square metres of living coral reef per year.1

When taken out of water, its soft body ruptures and collapses, but its spines can recover their shape if it is put back in the water while still alive.1

Its body contains detergent-like saponins, so keeping starfish in small volumes of water with aeration produces large amounts of foam.1

It is one of the largest starfish in the world.1

It has lost the usual five-fold symmetry of starfish as it grew more arms, although it begins life with five-fold symmetry.1

Pemecah mitos

Mitos: Its spines inject venom like a snake or stinging animal.

Hakikat: It has no mechanism for injecting toxin. Its spines pierce skin and leave saponin-containing tissue in the wound.1

Untuk pakar bisa

Nama saintifik: Acanthaster planci
Kumpulan: Landak laut, tapak sulaiman & cacing
Keluarga: Acanthasteridae2
Susunan: Valvatida
Benua-benua: Lautan Hindi, Lautan Pasifik, Laut Merah, Laut Karang, Laut Filipina, Laut China Selatan, Laut Andaman, Laut Arab & Teluk Parsi, Laut Timor & Laut Arafura, Teluk Benggala, Lautan
Anak: It releases vast amounts of eggs and sperm (gametes) during mass spawning events in summer, and the eggs contain saponins similar to those in adults.1
Bahaya kepada manusia: 3 / 5: Serius3

Dari mana fakta datang

Crown-of-thorns starfish (Wikipedia (CC BY-SA 4.0))
Acanthaster planci (iNaturalist): nama dan pengelasan.
Venom Wiki: tahap bahaya, saiz biasa dan anggaran kelajuan adalah penilaian kami sendiri. Lihat cara kami mengiranya: Cara kami menilai bahaya.

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