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Risba: Port Jackson shark
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Port Jackson shark

Heterodontus portusjacksoni
O imenu: The genus name Heterodontus comes from Greek words meaning 'different' and 'tooth', which refers to its teeth.1
NeškodljivaZa ljudi neškodljiva. Ni razloga za skrb.
Strupene ribe Strupene bodiceJe: Meso
Nevarnost za ljudi: BlagaKot čebelji pik ali manj. Za ljudi praktično neškodljiva.

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

Živi v
Temperate coastal waters of southern Australia, from southern Queensland to Tasmania and west to central Western Australia.1
Indijski ocean, Južni ocean, Antarktika
Domov
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
Dolžina
1,6 m (5,4 ft)1
Največja hitrost
približno 22 km/h (14 mph)
Plavanje, groba ocena
Kaj je?
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
Zares!Fotografija: Port Jackson shark
Port Jackson shark. Fotografija: Mark Norman / Museum Victoria. CC BY 3.0, Wikimedia Commons.

Kako jo prepoznaš

  • 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

Moč strupa

Strupene bodice

Ostre bodice nosijo strup. Če stopiš nanjo ali jo primeš, boli.

Kako nevarna je za ljudi?

Nevarnost za ljudi: BlagaKot čebelji pik ali manj. Za ljudi praktično neškodljiva.

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

Če te zbode z bodicami

  • Rano daj v vročo vodo, tako vročo, kot jo poškodovanec prenese, ne da bi se opekel (preizkusi jo s svojo roko), za 30 do 90 minut. Poišči zdravniško pomoč, še posebej pri kamnitih ribah in morskih bičih.

Vedno najprej pokliči številko za klic v sili (112, 000, 911). To so splošna navodila za prvo pomoč, ne zdravniški nasvet. Osnove prve pomoči

Ostani varen

  • Nikoli se ne dotikaj divje živali, je ne lovi in je ne draži, tudi če je majhna in tudi če je videti, kot da spi ali je mrtva.
  • Pusti ji prostor. Če jo srečaš, ostani miren, počasi stopi nazaj in jo pusti, da gre svojo pot.
  • Če te zbode z bodicami: ostani miren, ne premikaj se, pokliči številko za klic v sili (112, 000, 911) ali hitro pojdi v bolnišnico. Zapomni si, kako je izgledala, fotografija pomaga.

Ne preži nate. Strup uporablja, da ulovi hrano ali se zaščiti, in se veliko raje skrije. Več o varnosti

Kako velika je?

Kako dolga je?

Port Jackson shark približno 1,6 m dolga (5,4 ft)Pes približno 1 m (3,3 ft)Odrasla oseba približno 1,7 m (5,6 ft)
dolga kot 3 domačih mačk od nosu do repadolga kot 9 banan, položenih ena za drugozmore preplavati dolžino velikega bazena (50 m) v 8,2 sekundah

Kakšne velikosti je Port Jackson shark v primerjavi s TABO?

Samo matematika v tvojem brskalniku. Nič se ne shrani in nič se nikamor ne pošlje.

Kako hitra je?

vredno vedeti

Dejstva

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

Razbijalec mitov

Mit: Port Jackson sharks are dangerous to people.

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

Za strokovnjake za strupe

Znanstveno ime
Heterodontus portusjacksoni
Skupina
Strupene ribe
Družina
Heterodontidae2
Red
Heterodontiformes
Celine
Indijski ocean, Južni ocean, Antarktika, Oceani
Mladiči
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
Kako ji gre v naravi
Least Concern (IUCN Red List)1
Nevarnost za ljudi
1 / 5: Blaga3

Od kod so dejstva

  1. Port Jackson shark (Wikipedia (CC BY-SA 4.0))
  2. Heterodontus portusjacksoni (iNaturalist): imena in razvrstitev.
  3. Venom Wiki: stopnja nevarnosti, tipična velikost in ocena hitrosti so naše lastne. Poglej, kako jih določimo: Kako ocenjujemo nevarnost.

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Živi tudi v: Indijski ocean

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