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Spiny dogfish

Squalus acanthias
Tungkol sa pangalan: The species name acanthias refers to the shark's two spines.1
Masakit langHuwag hawakanMasakit, pero hindi ka nito lubhang mapipinsala.
Mga makamandag na isda Makamandag na tinikKinakain: Karne
Panganib sa tao: MasakitTalagang masakit, pero halos hindi kailanman malala.

The spiny dogfish is a small, well-known shark with a sharp spine in front of each of its two back fins. It lives in shallow and offshore waters in most parts of the world, especially cooler seas, and it is hunted heavily for food. Its spines are its main form of defence.1

Nakatira sa
Shallow and offshore waters in most parts of the world, especially temperate seas; the northern Pacific population is now a separate species, the Pacific spiny dogfish1
Karagatang Atlantiko, Karagatang Pasipiko, Karagatang Indiyano, Dagat Mediteraneo, Karagatang Timog, Karagatang Artiko, Antarctica, Dagat Hilaga
Home
It lives in shallow waters and further offshore, and is described as bottom-dwelling. It is commonly found at depths of about 50 to 149 m, and has been found deeper than 700 m. Commercial fishing brings it to fish markets, fish and chip shops and restaurants.1
Haba
60 cm hanggang 84 cm (2 ft hanggang 2.8 ft)1
Pinakamataas na bilis
mga 20 km/h (12 mph)
Paglangoy, tantiya lang
Ano ang kinakain nito?
It eats squid, fish, crab, jellyfish, sea cucumber, shrimp and other invertebrates. It hunts in packs that can number into the thousands and is described as an aggressive hunter.1
Totoo!Litrato ng Spiny dogfish
Spiny dogfish. Litrato: Ecomare/Salko de Wolf. CC BY-SA 4.0, iNaturalist.

Paano ito makikilala

  • Two spines, one in front of each dorsal (back) fin.1
  • No anal fin on the underside.1
  • White spots along its back.1
  • Greyish brown on both sexes, with countershading (darker on top, paler underneath).1
  • Asymmetrical tail lobes, forming a heterocercal tail (the upper lobe is larger).1

Madalas mapagkamalang: Several shark species share the names dogfish, spurdog and piked dogfish. Spiny dogfish are told apart by having two spines, one in front of each dorsal fin, and no anal fin.1

Lakas ng kamandag

Makamandag na tinik

May dalang kamandag ang matatalim na tinik. Masakit kapag naapakan o nahawakan ito.

Ano ang epekto ng kamandag nito?

Its dorsal spines secrete a mild venom. The spines are driven into an attacker when the shark arches its back.1

Gaano ito kapanganib sa tao?

Panganib sa tao: MasakitTalagang masakit, pero halos hindi kailanman malala.

Ano ang ginagawa nito kapag natatakot?

If it is caught, it arches its back to pierce its captor with the spines near its dorsal fins.1

Kung matusok ka ng mga tinik nito

  • Ilubog ang sugat sa mainit na tubig, kasing-init ng kayang tiisin ng tao nang hindi napapaso (subukan muna gamit ang sarili mong kamay), sa loob ng 30 hanggang 90 minuto. Kumuha ng tulong medikal, lalo na para sa stonefish at pagi.

Laging tawagan muna ang numero pang-emergency (112, 000, 911). Ito ay pangkalahatang gabay sa pangunang lunas, hindi payong medikal. Mga batayan ng pangunang lunas

Mag-ingat

  • Huwag kailanman hawakan, hulihin o asarin ang ligaw na hayop, kahit maliit, at kahit mukha itong tulog o patay.
  • Bigyan ito ng espasyo. Kung makasalubong ka ng isa, manatiling kalmado, dahan-dahang umatras at hayaan itong umalis.
  • Kung matusok ka ng mga tinik nito: manatiling kalmado, huwag gumalaw, tawagan ang numero pang-emergency (112, 000, 911) o pumunta agad sa ospital. Tandaan ang itsura nito, makakatulong ang litrato.

Hindi ka nito hinahabol. Ginagamit nito ang kamandag para manghuli ng pagkain o ipagtanggol ang sarili, at mas gusto pa nitong magtago. Higit pa tungkol sa pag-iingat

Gaano ito kalaki?

Gaano ito kahaba?

Spiny dogfish mga 84 cm ang haba (2.8 ft)Isang pusang bahay mga 50 cm (1.6 ft)Isang aso mga 1 m (3.3 ft)
kasinghaba ng 1.5 pusang bahay mula ilong hanggang buntotkasinghaba ng 5 saging na magkakadugtongkayang languyin ang haba ng malaking swimming pool (50 m) sa loob ng 9 segundo

Gaano kalaki si Spiny dogfish kumpara sa IYO?

Math lang sa browser mo. Walang sine-save o ipinapadala kahit saan.

Gaano ito kabilis?

magandang malaman

Mga fact

1

Dogfish sharks have one of the longest pregnancies of any organism, lasting around 18 to 24 months.1

2

Spiny dogfish hunt in packs that can range up into the thousands.1

3

In England, dogfish are sold in fish and chip shops as 'huss', and used to be sold as 'rock salmon' until that term was outlawed.1

4

Spiny dogfish are popular dissection specimens in high schools and universities because they are easy to get and have small, cartilaginous skulls.1

5

Squalus acanthias fossils from the Miocene of Denmark and the Netherlands date from about 11 million years ago.1

6

Males are identified by a pair of modified pelvic fins called claspers, which they use to transfer sperm to the female.1

Myth buster

Mito: All animals called dogfish or spurdog are the same species.

Totoo: These common names can apply to several species. Spiny dogfish are identified by their two spines, one in front of each dorsal fin, and by having no anal fin.1

Para sa mga eksperto sa kamandag

Pangalang siyentipiko
Squalus acanthias
Grupo
Mga makamandag na isda
Pamilya
Squalidae2
Ayos
Squaliformes
Mga kontinente
Karagatang Atlantiko, Karagatang Pasipiko, Karagatang Indiyano, Dagat Mediteraneo, Karagatang Timog, Karagatang Artiko, Antarctica, Dagat Hilaga, Ang mga karagatan
Mga sanggol
The eggs develop inside the mother and the pups are born alive, with about 5 to 6 in each litter; gestation can last from around 18 to 24 months, one of the longest of any organism.1
Kalagayan nito sa ligaw
Vulnerable globally; Critically endangered in the Northeast Atlantic1
Panganib sa tao
2 / 5: Masakit3

Saan galing ang mga fact

  1. Spiny dogfish (Wikipedia (CC BY-SA 4.0))
  2. Squalus acanthias (iNaturalist): mga pangalan at klasipikasyon.
  3. Venom Wiki: sarili naming tantiya ang antas ng panganib, karaniwang laki at hula sa bilis. Tingnan kung paano namin ito kinukuwenta: Paano namin sinusukat ang panganib.

Bawat fact sa pahinang ito ay may numerong tumuturo sa pinagmulan nito. Kung may mali kami, pasensya na, mahilig lang kami sa hayop, hindi kami science journal. Sabihin sa amin sa [email protected] at aayusin namin.

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