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Risba: Spiny dogfish
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Spiny dogfish

Squalus acanthias
O imenu: The species name acanthias refers to the shark's two spines.1
Samo boliNe dotikaj seBoli, a te ne bo resno poškodovala.
Strupene ribe Strupene bodiceJe: Meso
Nevarnost za ljudi: BolečeLahko zelo boli, a skoraj nikoli ni resno.

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

Živi v
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
Atlantski ocean, Tihi ocean, Indijski ocean, Sredozemsko morje, Južni ocean, Arktični ocean, Antarktika, Severno morje
Domov
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
Dolžina
60 cm do 84 cm (2 ft do 2,8 ft)1
Največja hitrost
približno 20 km/h (12 mph)
Plavanje, groba ocena
Kaj je?
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
Zares!Fotografija: Spiny dogfish
Spiny dogfish. Fotografija: Ecomare/Salko de Wolf. CC BY-SA 4.0, iNaturalist.

Kako jo prepoznaš

  • 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

Pogosto zamenjujejo z: 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

Moč strupa

Strupene bodice

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

Kaj naredi njen strup, ko ugrizne ali piči?

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

Kako nevarna je za ljudi?

Nevarnost za ljudi: BolečeLahko zelo boli, a skoraj nikoli ni resno.

Kaj naredi, ko se prestraši?

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

Kje na svetu?

AfrikaAzijaEvropaSeverna AmerikaJužna AmerikaAvstralija in OceanijaAntarktikaTihi oceanAtlantski oceanIndijski oceanArktični oceanJužni oceanSredozemsko morjeSeverno morje

Kako velika je?

Kako dolga je?

Spiny dogfish približno 84 cm dolga (2,8 ft)Domača mačka približno 50 cm (1,6 ft)Pes približno 1 m (3,3 ft)
dolga kot 1,5 domačih mačk od nosu do repadolga kot 5 banan, položenih ena za drugozmore preplavati dolžino velikega bazena (50 m) v 9 sekundah

Kakšne velikosti je Spiny dogfish 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

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

Razbijalec mitov

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

Resnica: 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

Za strokovnjake za strupe

Znanstveno ime
Squalus acanthias
Skupina
Strupene ribe
Družina
Squalidae2
Red
Squaliformes
Celine
Atlantski ocean, Tihi ocean, Indijski ocean, Sredozemsko morje, Južni ocean, Arktični ocean, Antarktika, Severno morje, Oceani
Mladiči
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
Kako ji gre v naravi
Vulnerable globally; Critically endangered in the Northeast Atlantic1
Nevarnost za ljudi
2 / 5: Boleče3

Od kod so dejstva

  1. Spiny dogfish (Wikipedia (CC BY-SA 4.0))
  2. Squalus acanthias (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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