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Port Jackson shark

Heterodontus portusjacksoni

Tentang nama: The genus name Heterodontus comes from Greek words meaning 'different' and 'tooth', which refers to its teeth.1

Tidak berbahayaTidak berbahaya kepada manusia. Tiada apa yang perlu dirisaukan.

Ikan berbisa

Duri berbisaMakan: Daging

Bahaya kepada manusia: RinganSeperti sengatan lebah atau kurang. Boleh dikatakan tidak berbahaya kepada manusia.

The Port Jackson shark is a bottom-dwelling shark that lives in the cool coastal waters of southern Australia. It is active mostly at night, when it hunts shellfish, sea urchins and fish. It is harmless to people, though its spines have a reputation that is not confirmed.1

Hidup di

Temperate coastal waters of southern Australia, from southern Queensland to Tasmania and west to central Western Australia.1

Lautan Hindi, Lautan Selatan, Antartika

Laman utama

It lives on or near the sea bottom, mostly over rocky ground, though it also uses sandy, muddy and seagrass areas. By day it rests in flat areas that offer shelter from currents, including caves and under rocky outcrops. It usually lives at depths of less than 100 metres.1

Panjang

1.6 m (5.4 ft)1

Kelajuan maksimum

kira-kira 22 km/j (14 mph)

Berenang, anggaran kasar

Apa yang ia makan?

It eats hard-shelled molluscs, crustaceans, sea urchins and fish. It forages at night, when its prey is most active, and can suck in water and sand from the bottom to catch food. Black sea urchins are often eaten.1

Gambar Port Jackson shark — Port Jackson shark. Gambar: Mark Norman / Museum Victoria. CC BY 3.0, Wikimedia Commons.

Cara mengenalinya

Grey-brown body with dark brown, harness-like bands, including one that runs across the eyes.1
Large, blunt, flat head with raised ridges above the eyes.1
A spine at the front edge of each of its two dorsal fins, which are nearly equal in size.1
Front teeth are small and pointed, while back teeth are flat and blunt.1
Adults can grow up to 1.65 metres long.1

Kuasa bisa

Duri berbisa

Duri tajam membawa bisa. Memijak atau memegangnya menyakitkan.

Berapa bahaya ia kepada manusia?

Bahaya kepada manusia: RinganSeperti sengatan lebah atau kurang. Boleh dikatakan tidak berbahaya kepada manusia.

The shark poses no danger to humans. In October 2011, a man was bitten at Elwood Beach near Melbourne, but the bite did not pierce the skin and he was able to swim away while the shark was still attached to his calf.1

Jika durinya menikam kamu

Rendam luka dalam air panas, sepanas yang orang itu boleh tahan tanpa melecur (uji dengan tangan kamu sendiri), selama 30 hingga 90 minit. Dapatkan bantuan perubatan, terutamanya untuk ikan batu dan ikan pari.

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 Antartika Lautan Hindi Lautan Selatan

Berapa besar ia?

Berapa panjang ia?

sepanjang 3 ekor kucing rumah dari hidung ke ekorsepanjang 9 biji pisang disusun hujung ke hujungboleh berenang sepanjang kolam renang besar (50 m) dalam 8.2 saat

Berapa besar Port Jackson shark berbanding KAMU?

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

Berapa laju ia?

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

Port Jackson shark kira-kira 22 km/j (14 mph)

Ikan lumba-lumba pada kelajuan penuh kira-kira 35 km/j (22 mph)

berguna untuk diketahui

Fakta

It can turn its stomach inside out and spit out unwanted contents.1

It can breathe while lying still on the bottom. It pumps water in through its first gill slit and out through the others, so it does not need to swim with its mouth open.1

Juveniles have individual personalities. Some are bolder than others when exploring new places, and they respond differently to stress.1

Juveniles can learn to link bubbles, lights or sounds with food, and they can learn by watching other sharks.1

Adults are often seen resting together in caves, but juveniles do not seem to be social.1

Each year it migrates south in summer and returns north to breed in winter.1

Pemecah mitos

Mitos: Port Jackson sharks are dangerous to people.

Hakikat: The shark poses no danger to humans. Its spines are rumoured to be venomous, but this has not been confirmed.1

Untuk pakar bisa

Nama saintifik: Heterodontus portusjacksoni
Kumpulan: Ikan berbisa
Keluarga: Heterodontidae2
Susunan: Heterodontiformes
Benua-benua: Lautan Hindi, Lautan Selatan, Antartika, Lautan
Anak: It lays eggs rather than giving birth to live young. From late August to mid-November, the female lays pairs of eggs every 8 to 17 days, up to eight pairs in total, and the eggs take 10 to 11 months to hatch.1
Keadaannya di alam liar: Least Concern (IUCN Red List)1
Bahaya kepada manusia: 1 / 5: Ringan3

Dari mana fakta datang

Port Jackson shark (Wikipedia (CC BY-SA 4.0))
Heterodontus portusjacksoni (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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