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Eserese katuun nke Horn shark
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Horn shark

Heterodontus francisci
Gbasara aha ya: The scientific name francisci refers to San Francisco, although the shark's range does not reach that far north.1
Adịghị njọỌ dịghị njọ nye mmadụ. Ọ dịghị ihe ị ga-echegbu onwe gị.
Azụ na-agba nsị Mkpu na-agba nsịNri ya: Anụ
Ihe ize ndụ nye mmadụ: ObereDị ka ịgba aṅụ ma ọ bụ nke na-erughị ya. Ọ fọrọ nke nta ka ọ ghara ịdị njọ nye mmadụ.

The horn shark is a small shark with a blunt head and two tall fins, each with a large spine at the front. It lives along the western coast of North America, from California to the Gulf of California. It spends its days hidden in caves and crevices and hunts at night.1

Ebe obibi
Eastern Pacific coast of North America, from Monterey Bay in California south to the Gulf of California1
Oké Osimiri Pasifik, Ọwara California
Ụlọ
Adults live in shallower water, usually 2 to 11 m deep, on rocky reefs and in algae beds. Juveniles prefer sandy flats in deeper water, 40 to 150 m deep. In winter, adults move to water deeper than 30 m.1
Ogologo
1.2 m (3.9 ft)1
Ọsọ kacha elu
ihe dị ka 20 km/h (12 mph)
Igwu mmiri, nchepụta
Gịnị ka ọ na-eri?
Adults eat mostly hard-shelled molluscs, sea urchins and crustaceans, which they crush with their flat back teeth. They suck prey out of the sand and rocks, and can lever loose prey free with their body.1
N'ezie!Foto Horn shark
Horn shark. Foto: Chad King / SIMoN NOAA, no known copyright restrictions (public domain). Public domain, iNaturalist.

Otú ị ga-esi mata ya

  • Short, blunt head with low ridges over the eyes1
  • Two high dorsal fins, each with large, stout spines at the front1
  • Brown or grey body with many small dark spots, though older sharks may have no spots1
  • Yellowish underside1
  • Usually about 1 m long, and most do not exceed this length1

Ike nsị

Mkpu na-agba nsị

Mkpu dị nkọ na-ebu nsị ahụ. Ịzọ ya ụkwụ ma ọ bụ ijide ya na-afụ ụfụ.

Kedu otú o si dị egwu nye mmadụ?

Ihe ize ndụ nye mmadụ: ObereDị ka ịgba aṅụ ma ọ bụ nke na-erughị ya. Ọ fọrọ nke nta ka ọ ghara ịdị njọ nye mmadụ.

Horn sharks are harmless unless they are harassed. They are not targeted by commercial or recreational fisheries, though small numbers are caught by accident.1

Gịnị ka ọ na-eme mgbe ụjọ tụrụ ya?

During the day they stay still in hiding places, but they swim away quickly if disturbed.1

Ọ bụrụ na mkpu ya dụrụ gị

  • Tinye ọnya ahụ n'ime mmiri ọkụ, nke ọkụ dị ka onye ahụ nwere ike ịnagide n'ere ya ọkụ (jiri aka gị nwalee ya), ruo nkeji 30 ruo 90. Chọọ enyemaka ọgwụ, karịsịa maka azụ nkume (stonefish) na stingray.

Na-ebu ụzọ kpọọ nọmba mberede gị mgbe niile (112, 000, 911). Nke a bụ ndụmọdụ enyemaka mbụ n'ozuzu, ọ bụghị ndụmọdụ ọgwụ. Isi ihe enyemaka mbụ

Nọrọ na nchekwa

  • Emetụla anụ ọhịa aka, ejidela ya, emekwala ya ihe ọjọọ, ọbụna obere, ọbụna ma ọ dị ka ọ na-ehi ụra ma ọ bụ nwụọ anwụ.
  • Nye ya ohere. Ọ bụrụ na ị zutere otu, dị jụụ, laghachi azụ nwayọ, hapụ ya ka ọ gaa ụzọ ya.
  • Ọ bụrụ na mkpu ya dụrụ gị: dị jụụ, emegharịla ahụ, kpọọ nọmba mberede gị (112, 000, 911) ma ọ bụ gaa ụlọ ọgwụ ngwa ngwa. Cheta ka o si dị, foto na-enye aka.

Ọ naghị achụ gị. Ọ na-eji nsị ya ejide nri ma ọ bụ chebe onwe ya, ọ ga-akakwa mma n'anya ya ịzo onwe ya. Ihe ndị ọzọ gbasara ịnọ na nchekwa

Ebee n'ụwa?

AfrịkaEshiaYuropUgwu AmerikaNdịda AmerikaỌstrelia na OsheniaOké Osimiri PasifikỌwara California

Ọ hà aṅaa?

Kedu otú o si dị ogologo?

Horn shark ogologo ya dị ihe dị ka 1.2 m (3.9 ft)Nkịta ihe dị ka 1 m (3.3 ft)Okenye ihe dị ka 1.7 m (5.6 ft)
dị ogologo dị ka nwamba ụlọ 2.5 site n'imi ruo n'ọdụdị ogologo dị ka unere 7 a tọgbọrọ n'ahịrịnwere ike igwu mmiri ogologo nnukwu ọdọ igwu mmiri (50 m) n'ime sekọnd 9

Kedu otú Horn shark si hà ma e jiri ya tụnyere GỊ?

Naanị mgbakọ na mwepụ n'ime browser gị. Ọ dịghị ihe echekwara ma ọ bụ ezigara ebe ọ bụla.

Kedu otú o si agba ọsọ?

ọ dị mma ịmara

Eziokwu

1

For its size, the horn shark has the strongest bite of any shark that has been measured.1

2

To pull prey loose, the shark pushes its head up with a downward stroke of its tail. No other shark has been seen doing this.1

3

Large horn sharks that eat many sea urchins can have purple-stained teeth and fin spines.1

4

A Pacific angelshark was filmed trying to swallow a juvenile horn shark, but spat it out because of the spines.1

5

Horn sharks have only 148 electroreceptors (ampullae of Lorenzini), far fewer than most sharks, which may have over 2,000. They rely mainly on smell to find food.1

6

A dropped tooth takes about 4 weeks to be replaced.1

Maka ndị ọkachamara nsị

Aha sayensị
Heterodontus francisci
Otu
Azụ na-agba nsị
Ezinụlọ
Heterodontidae2
Usoro
Heterodontiformes
Kọntinent dị iche iche
Oké Osimiri Pasifik, Ọwara California, Oké osimiri niile
Ụmụ ọhụrụ
They lay eggs. From February to April, females lay up to 24 eggs, two at a time, every 11 to 14 days, and wedge the egg cases into crevices to protect them.1
Otú ọ na-eme n'ọhịa
Insufficient data (IUCN); population listed as stable on 10 October 20251
Ihe ize ndụ nye mmadụ
1 / 5: Obere3

Ebe eziokwu ndị a si

  1. Horn shark (Wikipedia (CC BY-SA 4.0))
  2. Heterodontus francisci (iNaturalist): aha na nhazi ọkwa.
  3. Venom Wiki: ọkwa ihe ize ndụ, nha nkịtị na nchepụta ọsọ bụ nke anyị. Lee otú anyị si achọpụta ha: Otú anyị si atụ ihe ize ndụ.

Eziokwu ọ bụla dị na peeji a nwere nọmba na-egosi ebe o si. Ọ bụrụ na anyị mehiere ihe, ndo, anyị bụ ndị hụrụ anụmanụ n'anya, ọ bụghị akwụkwọ akụkọ sayensị. Gwa anyị na [email protected], anyị ga-edozi ya.

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