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Port Jackson shark

Heterodontus portusjacksoni

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

AláìléwuKò léwu fún ènìyàn. Kò sí ohun tó yẹ kí ó dààmú ọ.

Ẹja olóró

Ẹ̀gún olóróOúnjẹ rẹ̀: Ẹran

Ewu fún ènìyàn: Fúyẹ́Bí ìtani oyin tàbí kò tó bẹ́ẹ̀. Kò fẹ́rẹ̀ẹ́ léwu fún ènìyàn.

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

Ó ń gbé ní

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

Òkun Íńdíà, Òkun Gúúsù, Antáktíkà

Ilé

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

Gígùn

1.6 m (5.4 ft)1

Ìyára gíga jùlọ

nǹkan bí 22 km/h (14 mph)

Lílúwẹ̀ẹ́, àfojúbù

Kí ni ó máa ń jẹ?

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

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

Bí o ṣe lè dá a mọ̀

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

Agbára oró

Ẹ̀gún olóró

Ẹ̀gún mímú ló ń gbé oró náà. Títẹ̀ ẹ́ mọ́lẹ̀ tàbí dídì í mú máa ń dunni.

Báwo ló ṣe léwu tó fún ènìyàn?

Ewu fún ènìyàn: Fúyẹ́Bí ìtani oyin tàbí kò tó bẹ́ẹ̀. Kò fẹ́rẹ̀ẹ́ léwu fún ènìyàn.

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

Bí ẹ̀gún rẹ̀ bá gún ọ

Fi ọgbẹ́ náà sínú omi gbígbóná, tó gbóná tó bí ẹni náà ṣe lè fara dà á láìjóná (fi ọwọ́ ara rẹ dán an wò), fún ìṣẹ́jú 30 sí 90. Wá ìrànlọ́wọ́ ìṣègùn, pàápàá fún ẹja òkúta àti stingray.

Máa kọ́kọ́ pe nọ́ńbà pàjáwìrì rẹ nígbà gbogbo (112, 000, 911). Èyí jẹ́ ìtọ́sọ́nà ìtọ́jú àkọ́kọ́ gbogbogbò, kì í ṣe ìmọ̀ràn ìṣègùn. Ìpìlẹ̀ ìtọ́jú àkọ́kọ́

Wà láìléwu

Má ṣe fọwọ́ kan, mú tàbí yọ ẹranko igbó lẹ́nu láéláé, kódà bí ó bá kéré, kódà bí ó bá dà bí ẹni pé ó ń sùn tàbí ó ti kú.
Fún un ní àyè. Bí o bá pàdé ọ̀kan, farabalẹ̀, sẹ́yìn díẹ̀díẹ̀ kí o sì jẹ́ kí ó máa bá ọ̀nà rẹ̀ lọ.
Bí ẹ̀gún rẹ̀ bá gún ọ: farabalẹ̀, má ṣe mira, pe nọ́ńbà pàjáwìrì rẹ (112, 000, 911) tàbí lọ sí ilé ìwòsàn kíákíá. Rántí bí ó ṣe rí, fọ́tò máa ń ṣèrànwọ́.

Kò wá ọ kiri láti ṣe ọ́ léṣe. Ó ń lo oró rẹ̀ láti mú oúnjẹ tàbí láti dáàbò bo ara rẹ̀, ó sì fẹ́ràn láti farapamọ́ jù. Sí i nípa wíwà láìléwu

Níbo ní ayé?

Áfíríkà Éṣíà Yúróòpù Àríwá Amẹ́ríkà Gúúsù Amẹ́ríkà Ọsirélíà àti Òṣéáníà Antáktíkà Òkun Íńdíà Òkun Gúúsù

Báwo ló ṣe tóbi tó?

Báwo ló ṣe gùn tó?

ó gùn tó ológbò ilé 3 láti imú dé ìrùó gùn tó ọ̀gẹ̀dẹ̀ 9 tí a tò tẹ̀léralè lúwẹ̀ẹ́ gígùn adágún ìwẹ̀ ńlá (50 m) ní ìṣẹ́jú-àáyá 8.2

Báwo ni Port Jackson shark ṣe tóbi tó tí a bá fi wé ÌWỌ?

Ìṣirò nìkan nínú bráwúsà rẹ. A kò fi ohunkóhun pamọ́, a kò sì fi ránṣẹ́ sí ibikíbi.

Báwo ló ṣe yára tó?

Olùwẹ̀ Olympic nǹkan bí 8 km/h (5 mph)

Port Jackson shark nǹkan bí 22 km/h (14 mph)

Ẹja dolphin tó ń sá pẹ̀lú gbogbo agbára nǹkan bí 35 km/h (22 mph)

ó yẹ ní mímọ̀

Òtítọ́

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

Olùfọ́ àròsọ

Àròsọ: Port Jackson sharks are dangerous to people.

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

Fún àwọn amòye oró

Orúkọ sáyẹ́ǹsì: Heterodontus portusjacksoni
Ẹgbẹ́: Ẹja olóró
Ìdílé: Heterodontidae2
Ètò: Heterodontiformes
Àwọn kọ́ńtínẹ́ńtì: Òkun Íńdíà, Òkun Gúúsù, Antáktíkà, Àwọn òkun ńlá
Àwọn ọmọ: 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
Bí ó ṣe ń ṣe nínú igbó: Least Concern (IUCN Red List)1
Ewu fún ènìyàn: 1 / 5: Fúyẹ́3

Ibi tí àwọn òtítọ́ ti wá

Port Jackson shark (Wikipedia (CC BY-SA 4.0))
Heterodontus portusjacksoni (iNaturalist): orúkọ àti ìpínsísọ̀rí.
Venom Wiki: ìpele ewu, ìtóbi déédé àti àfojúbù ìyára jẹ́ tiwa. Wo bí a ṣe ń ṣírò wọn: Bí a ṣe ń díwọ̀n ewu.

Gbogbo òtítọ́ ojú-ìwé yìí ní nọ́ńbà tó tọ́ka sí orísun rẹ̀. Bí a bá ṣe àṣìṣe, má bínú, olólùfẹ́ ẹranko ni wá, kì í ṣe ìwé ìròyìn sáyẹ́ǹsì. Sọ fún wa ní [email protected] a ó sì tún un ṣe.

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