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Ikhathuni ka-Port Jackson shark
Inombolo 1260 kwezingu-1 402

Port Jackson shark

Heterodontus portusjacksoni
Mayelana negama: The genus name Heterodontus comes from Greek words meaning 'different' and 'tooth', which refers to its teeth.1
AkunangoziAkunangozi ebantwini. Akukho okufanele ukhathazeke ngakho.
Izinhlanzi ezinobuthi Ameva anobuthiSidla: Inyama
Ingozi ebantwini: KuncaneNjengokuhlatshwa yinyosi noma ngaphansi. Cishe akunangozi ebantwini.

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

Ihlala
Temperate coastal waters of southern Australia, from southern Queensland to Tasmania and west to central Western Australia.1
ULwandlekazi i-India, ULwandlekazi lwaseNingizimu, I-Antarctica
Ekhaya
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
Ubude
1.6 m (5.4 ft)1
Ijubane eliphezulu
cishe 22 km/h (14 mph)
Ukubhukuda, isiqagela nje
Sidlani?
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
Ngempela!Isithombe sika-Port Jackson shark
Port Jackson shark. Isithombe: Mark Norman / Museum Victoria. CC BY 3.0, Wikimedia Commons.

Indlela yokusibona

  • 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

Amandla obuthi

Ameva anobuthi

Ameva abukhali aphethe ubuthi. Ukusinyathela noma ukusibamba kubuhlungu.

Siyingozi kangakanani ebantwini?

Ingozi ebantwini: KuncaneNjengokuhlatshwa yinyosi noma ngaphansi. Cishe akunangozi ebantwini.

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

Uma ameva aso ekugwaza

  • Faka inxeba emanzini ashisayo, ashisa ngendlela umuntu angakwazi ukuyibekezelela ngaphandle kokusha (yihlole ngesandla sakho), imizuzu engama-30 kuya kwengama-90. Thola usizo lwezokwelapha, ikakhulukazi kuma-stonefish nama-stingray.

Njalo shayela kuqala inombolo yezimo eziphuthumayo (112, 000, 911). Lokhu kuyiseluleko sosizo lokuqala esijwayelekile, akusona iseluleko sezokwelapha. Izisekelo zosizo lokuqala

Hlala uphephile

  • Ungalokothi uthinte, ubambe noma ugcone isilwane sasendle, ngisho noma sincane, futhi ngisho noma sibukeka silele noma sifile.
  • Sinike isikhala. Uma uhlangana naso, hlala uzolile, uhlehle kancane bese usiyeka sihambe ngendlela yaso.
  • Uma ameva aso ekugwaza: hlala uzolile, ungashukumi, shayela inombolo yezimo eziphuthumayo (112, 000, 911) noma uye esibhedlela ngokushesha. Khumbula ukuthi besibukeka kanjani, isithombe siyasiza.

Asikuzingeli wena. Sisebenzisa ubuthi baso ukuze sibambe ukudla noma ukuzivikela, futhi singancamela ukucasha. Okwengeziwe mayelana nokuhlala uphephile

Kuphi emhlabeni?

I-AfrikaI-AsiaI-YurophuINyakatho MelikaINingizimu MelikaI-Australia ne-OceaniaI-AntarcticaULwandlekazi i-IndiaULwandlekazi lwaseNingizimu

Sikhulu kangakanani?

Side kangakanani?

Port Jackson shark ubude obucishe bube ngu-1.6 m (5.4 ft)Inja cishe 1 m (3.3 ft)Umuntu omdala cishe 1.7 m (5.6 ft)
side njengamakati asekhaya angu-3 kusuka ekhaleni kuya emsileniside njengobhanana abangu-9 abalandelanayosingabhukuda ubude bechibi elikhulu lokubhukuda (50 m) ngemizuzwana engu-8.2

Port Jackson shark mkhulu kangakanani uma uqhathanisa NAWE?

Yizibalo nje kusiphequluli sakho. Akukho okulondolozwayo noma okuthunyelwa ndawo.

Sishesha kangakanani?

kuhle ukwazi

Amaqiniso

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

Umqothuli wezinganekwane

Inganekwane: Port Jackson sharks are dangerous to people.

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

Okongoti bobuthi

Igama lesayensi
Heterodontus portusjacksoni
Iqembu
Izinhlanzi ezinobuthi
Umndeni
Heterodontidae2
Ukuhleleka
Heterodontiformes
Amazwekazi
ULwandlekazi i-India, ULwandlekazi lwaseNingizimu, I-Antarctica, Izilwandlekazi
Izinsana
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
Simo saso endle
Least Concern (IUCN Red List)1
Ingozi ebantwini
1 / 5: Kuncane3

Lapho amaqiniso evela khona

  1. Port Jackson shark (Wikipedia (CC BY-SA 4.0))
  2. Heterodontus portusjacksoni (iNaturalist): amagama nokuhlelwa ngezigaba.
  3. Venom Wiki: izinga lengozi, usayizi ojwayelekile nesiqagela sejubane kungokwethu. Bona ukuthi sikubala kanjani: Indlela esilinganisa ngayo ingozi.

Iqiniso ngalinye kuleli khasi linenombolo ekhomba umthombo walo. Uma senze iphutha, uxolo, singabathandi bezilwane, hhayi iphephabhuku lesayensi. Sitshele ku-[email protected] futhi sizolilungisa.

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