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Igishushanyo cya Port Jackson shark
No. 1260 kuri 1 402

Port Jackson shark

Heterodontus portusjacksoni
Ibyerekeye izina: The genus name Heterodontus comes from Greek words meaning 'different' and 'tooth', which refers to its teeth.1
Ntacyo itwayeNtacyo itwaye abantu. Nta mpamvu yo guhangayika.
Amafi afite ubumara Amahwa afite ubumaraIrya: Inyama
Akaga ku bantu: YorohejeNko guterwa urubori n'uruyuki cyangwa munsi yaho. Mu by'ukuri ntacyo itwaye abantu.

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

Iba muri
Temperate coastal waters of southern Australia, from southern Queensland to Tasmania and west to central Western Australia.1
Inyanja y'Abahinde, Inyanja y'Amajyepfo, Antaragitika
Ahabanza
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
Uburebure
1,6 m (5,4 ft)1
Umuvuduko wo hejuru
hafi 22 km/h (14 mph)
Koga, ikigereranyo cy'ugereranyije
Irya iki?
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
Koko!Ifoto ya Port Jackson shark
Port Jackson shark. Ifoto: Mark Norman / Museum Victoria. CC BY 3.0, Wikimedia Commons.

Uko wayimenya

  • 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

Imbaraga z'ubumara

Amahwa afite ubumara

Amahwa atyaye ni yo atwara ubumara. Kuyikandagira cyangwa kuyifata birababaza.

Iteje akaga kangana iki ku bantu?

Akaga ku bantu: YorohejeNko guterwa urubori n'uruyuki cyangwa munsi yaho. Mu by'ukuri ntacyo itwaye abantu.

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

Niba amahwa yayo akujombye

  • Shyira igikomere mu mazi ashyushye, ashyushye uko umuntu abyihanganira atiriwe ashya (bigerageze ukoresheje ukuboko kwawe), mu gihe cy'iminota 30 kugeza kuri 90. Shaka ubufasha bwa muganga, cyane cyane ku bya stonefish na stingray.

Buri gihe banza uhamagare nimero y'ubutabazi (112, 000, 911). Izi ni inama rusange z'ubutabazi bw'ibanze, si inama za muganga. Ibanze by'ubutabazi bw'ibanze

Irinde akaga

  • Ntuzigere ukora, ufata cyangwa ushotora inyamaswa yo mu gasozi, nubwo yaba ntoya, kandi nubwo yasa n'isinziriye cyangwa yapfuye.
  • Yihe umwanya. Niba uhuye n'imwe, tuza, usubire inyuma buhoro buhoro kandi uyireke yigendere.
  • Niba amahwa yayo akujombye: tuza, ntunyeganyege, hamagara nimero y'ubutabazi (112, 000, 911) cyangwa ujye ku bitaro vuba. Ibuka uko yasaga, ifoto irafasha.

Ntigushakisha ngo ikugirire nabi. Ikoresha ubumara bwayo kugira ngo ifate ibyo kurya cyangwa yirinde, kandi ikunda cyane kwihisha. Ibindi ku kwirinda

Ni hehe ku isi?

AfurikaAziyaUburayiAmerika y'AmajyaruguruAmerika y'AmajyepfoOsitaraliya na OseyaniyaAntaragitikaInyanja y'AbahindeInyanja y'Amajyepfo

Ingana gute?

Ireshya ite?

Port Jackson shark ireshya hafi 1,6 m (5,4 ft)Imbwa hafi 1 m (3,3 ft)Umuntu mukuru hafi 1,7 m (5,6 ft)
ireshya n'injangwe zo mu rugo 3 zikurikiranye kuva ku zuru kugeza ku murizoireshya n'imineke 9 ikurikiranyeyakoga uburebure bw'ikidendezi kinini (metero 50) mu masegonda 8,2

Port Jackson shark ingana ite ugereranyije NAWE?

Ni imibare gusa ikorerwa muri mudasobwa yawe. Nta kintu kibikwa cyangwa cyoherezwa ahandi.

Yihuta gute?

bikwiye kumenywa

Ibintu by'ukuri

1

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

2

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

3

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

4

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

5

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

6

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

Usenya ibinyoma

Ikinyoma: Port Jackson sharks are dangerous to people.

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

Ku bahanga mu by'ubumara

Izina rya siyansi
Heterodontus portusjacksoni
Itsinda
Amafi afite ubumara
Umuryango
Heterodontidae2
Itsinda rinini (order)
Heterodontiformes
Imigabane
Inyanja y'Abahinde, Inyanja y'Amajyepfo, Antaragitika, Inyanja ngari
Abana bato
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
Uko imeze mu gasozi
Least Concern (IUCN Red List)1
Akaga ku bantu
1 / 5: Yoroheje3

Aho ibintu bivugwa bituruka

  1. Port Jackson shark (Wikipedia (CC BY-SA 4.0))
  2. Heterodontus portusjacksoni (iNaturalist): amazina n'ibyiciro.
  3. Venom Wiki: urwego rw'akaga, ingano isanzwe n'ikigereranyo cy'umuvuduko ni ibyacu bwite. Reba uko tubibara: Uko tugena akaga.

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