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Irukandji jellyfish

Carukia barnesi

Boleh membunuhJangan sentuhBoleh membunuh kamu tanpa rawatan. Jika ia menyengat kamu, dapatkan bantuan dengan cepat.

Obor-obor & penyengat laut

Sesungut yang menyengatMakan: Daging

Bahaya kepada manusia: Sangat berbahayaIa boleh membunuh orang yang tidak mendapat rawatan.

The Irukandji jellyfish is a tiny box jellyfish with a sting that can cause a serious illness called Irukandji syndrome. It lives in the open water near Australia, and it is hard to spot because it is so small.1

Hidup di

Open water near Australia, with most reported incidents in Australia, especially North Queensland1

Lautan Hindi, Lautan Pasifik, Laut Karang, Laut Timor & Laut Arafura

Laman utama

It lives in open water. Most reported stings happen in Australia during the warm summer season. Swimmers in open water near North Queensland were the first people recorded with this syndrome.1

Panjang

5 cm (2 in)1

Kelajuan maksimum

kira-kira 5 km/j (3.1 mph)

Berenang, anggaran kasar

Apa yang ia makan?

Muscle cells in the tentacles bring food to the mouth, where it enters a stomach-like cavity and is digested. Its prey changes as it grows, from small invertebrates such as zooplankton and crustaceans to fish.1

Gambar Irukandji jellyfish — Irukandji jellyfish. Gambar: Lisa-ann Gershwin. CC BY 4.0, iNaturalist.

Cara mengenalinya

The bell is square-shaped and very small, about 12 mm high and 30 mm across.1
It has four long tentacles, one from each corner of the bell.1
The tentacles range from 5 to 50 cm long.1
Its small size means it often goes unseen in open water.1

Sering dikelirukan dengan: The common name Irukandji jellyfish is also used for other Irukandji jellyfish, such as Malo kingi. The name alone does not tell them apart.1

Kuasa bisa

Sesungut yang menyengat

Ribuan sel penyengat kecil melepaskan sengat apabila sesuatu menyentuhnya.

Apa kesan bisanya?

This jellyfish is extremely venomous. Its venom comes from stinging cells called nematocysts in its tentacles and bell, and it changes as the jellyfish matures. A sting can cause Irukandji syndrome, with muscle aches, back pain, nausea, headaches, chest and stomach pains, sweating, high blood pressure and difficulty breathing.1

Berapa bahaya ia kepada manusia?

Bahaya kepada manusia: Sangat berbahayaIa boleh membunuh orang yang tidak mendapat rawatan.

Irukandji syndrome can be severe, and the symptoms are described in detail in medical accounts. Most reported incidents have been in Australia during the warm summer season. Because the jellyfish is so small, people often do not see it before they are stung.1

Jika ia menyengat

In hospital, patients are given intravenous morphine, hydromorphone or fentanyl for pain. Pethidine is avoided because of its toxic metabolite norpethidine.1
Keluar dari air dan tanggalkan semua sesungut (dengan sarung tangan atau kain).
Untuk obor-obor kotak tropika: tuang cuka pada sengatan sekurang-kurangnya 30 saat, panggil bantuan dan bersedia melakukan CPR. Untuk bluebottle dan kebanyakan yang lain: bilas dengan air laut, kemudian air panas untuk menghilangkan sakit.

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 ia menyengat 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 Karang Laut Timor & Laut Arafura

Berapa besar ia?

Berapa panjang ia?

lebih pendek daripada jari kelingking kamuboleh berenang sepanjang kolam renang besar (50 m) dalam 36 saat

Berapa besar Irukandji jellyfish berbanding KAMU?

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

Berapa laju ia?

Orang berenang kira-kira 3 km/j (1.9 mph)

Irukandji jellyfish kira-kira 5 km/j (3.1 mph)

Perenang Olimpik kira-kira 8 km/j (5 mph)

berguna untuk diketahui

Fakta

Jack Barnes of Cairns, Australia, discovered the species. During an exploration aimed at finding the cause of Irukandji syndrome, he allowed himself, a lifeguard and his 9-year-old son to be stung.1

Irukandji syndrome, which this jellyfish can cause, was first identified after a group of swimmers were stung in open water near North Queensland, Australia.1

Its venom changes in composition as the jellyfish grows, matching its change in prey from invertebrates to fish.1

Its life cycle alternates between a young form that attaches to a reef or rock and an adult form that swims freely in the water.1

This jellyfish is a type of box jellyfish, a group known for potent venom.1

Untuk pakar bisa

Nama saintifik: Carukia barnesi
Kumpulan: Obor-obor & penyengat laut
Keluarga: Carukiidae2
Susunan: Carybdeida
Benua-benua: Lautan Hindi, Lautan Pasifik, Laut Karang, Laut Timor & Laut Arafura, Lautan
Anak: Young jellyfish begin as a swimming planula larva, which settles on a reef or rock and grows into a polyp. The polyp later forms a colony that develops into an adult medusa.1
Bahaya kepada manusia: 4 / 5: Sangat berbahaya3

Dari mana fakta datang

Carukia barnesi (Wikipedia (CC BY-SA 4.0))
Carukia barnesi (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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