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Chithunzi chojambula cha Port Jackson shark
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Port Jackson shark

Heterodontus portusjacksoni
Za dzinali: The genus name Heterodontus comes from Greek words meaning 'different' and 'tooth', which refers to its teeth.1
YosavulazaYosavulaza anthu. Palibe chodandaula.
Nsomba zaululu Minga yaululuImadya: Nyama
Ngozi kwa anthu: YofatsaNgati kulasidwa ndi njuchi kapena pang'ono kuposa pamenepo. Pafupifupi yosavulaza anthu.

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

Imakhala ku
Temperate coastal waters of southern Australia, from southern Queensland to Tasmania and west to central Western Australia.1
Nyanja ya Indian, Nyanja ya Kumwera (Southern Ocean), Antarctica
Kunyumba
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
Kutalika
1,6 m (5,4 ft)1
Liwiro lapamwamba
pafupifupi 22 km/h (14 mph)
Kusambira, kuyerekeza chabe
Imadya chiyani?
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
Zoona!Chithunzi cha Port Jackson shark
Port Jackson shark. Chithunzi: Mark Norman / Museum Victoria. CC BY 3.0, Wikimedia Commons.

Mmene ungaizindikirire

  • 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

Mphamvu ya ululu

Minga yaululu

Minga yakuthwa imanyamula ululu. Kuiponda kapena kuigwira kumapweteka.

Ndi yoopsa bwanji kwa anthu?

Ngozi kwa anthu: YofatsaNgati kulasidwa ndi njuchi kapena pang'ono kuposa pamenepo. Pafupifupi yosavulaza anthu.

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

Minga yake ikakubaya

  • Ika bala m'madzi otentha, otentha monga momwe munthuyo angapirire osapsa (yesa ndi dzanja lako), kwa mphindi 30 mpaka 90. Peza thandizo la dokotala, makamaka pa stonefish ndi stingray.

Nthawi zonse yamba wayimbira nambala yadzidzidzi (112, 000, 911). Awa ndi malangizo wamba a chithandizo choyamba, osati malangizo a dokotala. Zoyambira za chithandizo choyamba

Khala wotetezeka

  • Usakhudze, kugwira kapena kuseweretsa nyama yakuthengo, ngakhale yaing'ono, ndipo ngakhale ikuoneka ngati yagona kapena yafa.
  • Ipatse malo. Ukakumana nayo, khala chete, bwerera m'mbuyo pang'onopang'ono ndipo uilole ipite njira yake.
  • Minga yake ikakubaya: khala chete, usasunthe, imbira nambala yadzidzidzi (112, 000, 911) kapena pita kuchipatala mwachangu. Kumbukira m'mene inkaonekera, chithunzi chimathandiza.

Sikufuna kukuvulaza. Imagwiritsa ntchito ululu wake kugwira chakudya kapena kudziteteza, ndipo imakonda kwambiri kubisala. Zambiri za kukhala wotetezeka

Kuti padziko lapansi?

AfricaAsiaUlayaAmereka ya KumpotoAmereka ya KumweraAustralia ndi OceaniaAntarcticaNyanja ya IndianNyanja ya Kumwera (Southern Ocean)

Ndi yaikulu bwanji?

Ndi yaitali bwanji?

Port Jackson shark yaitali pafupifupi 1,6 m (5,4 ft)Galu pafupifupi 1 m (3,3 ft)Munthu wamkulu pafupifupi 1,7 m (5,6 ft)
yaitali ngati amphaka apakhomo 3 mphuno ndi mchira motsatizanayaitali ngati nthochi 9 zoyalidwa motsatizanaingasambire kutalika kwa dziwe lalikulu losambira (50 m) m'masekondi 8,2

Port Jackson shark ndi yaikulu bwanji poyerekeza ndi IWE?

Ndi masamu chabe mu msakatuli wako. Palibe chomwe chimasungidwa kapena kutumizidwa kwina.

Imathamanga bwanji?

zoyenera kudziwa

Mfundo

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

Kuthetsa nthano zabodza

Nthano yabodza: Port Jackson sharks are dangerous to people.

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

Za akatswiri a ululu

Dzina la sayansi
Heterodontus portusjacksoni
Gulu
Nsomba zaululu
Banja
Heterodontidae2
Dongosolo
Heterodontiformes
Makontinenti
Nyanja ya Indian, Nyanja ya Kumwera (Southern Ocean), Antarctica, Nyanja zikuluzikulu
Ana akhanda
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
Mmene ilili kuthengo
Least Concern (IUCN Red List)1
Ngozi kwa anthu
1 / 5: Yofatsa3

Kumene mfundo zimachokera

  1. Port Jackson shark (Wikipedia (CC BY-SA 4.0))
  2. Heterodontus portusjacksoni (iNaturalist): mayina ndi magulu a sayansi.
  3. Venom Wiki: mlingo wa ngozi, kukula wamba ndi kuyerekeza kwa liwiro ndi zathu. Ona mmene timazipezera: Mmene timayezera ngozi.

Mfundo iliyonse patsamba lino ili ndi nambala yosonyeza kochokera. Ngati talakwitsa, pepani, ndife okonda nyama, osati magazini a sayansi. Tiuze pa [email protected] ndipo tikonza.

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