Squalidae

Squalidae
Squalidae
Temporal range: Upper Cretaceous–Recent
[1]
Spiny dogfish, Squalus acanthias
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: Squaliformes
Family: Squalidae
Blainville, 1816
Genera

Cirrhigaleus
Squalus

Squalidae is the family of dogfish sharks. They are found in the Atlantic, Pacific, and Indian oceans, from tropical equatorial climates to the Arctic and Antarctic.[2]

Dogfishes are small to medium sized sharks, ranging from 48 centimetres (19 in) to 1.6 metres (5.2 ft) in adult body length. They have two dorsal fins, each with smooth spines, but have no anal fin. Their skin is generally rough to the touch.[1] Unlike virtually all other shark species, dogfish possess venom, which coats its dorsal spines and is mildly toxic to humans.

These sharks are characterized by teeth in upper and lower jaws similar in size; caudal peduncle with lateral keels; upper precaudal pit usually present; and a caudal fin without subterminal notch. They are carnivores and prey upon organisms smaller than themselves.

The livers and stomachs of the Squalidae contain the compound squalamine, which possesses the property of reduction of small blood vessel growth in humans.[3]

References

  1. ^ a b Froese, Rainer, and Daniel Pauly, eds. (2009). "Squalidae" in FishBase. January 2009 version.
  2. ^ Stevens, J. & Last, P.R. (1998). Paxton, J.R. & Eschmeyer, W.N.. ed. Encyclopedia of Fishes. San Diego: Academic Press. p. 64. ISBN 0-12-547665-5. 
  3. ^ National Geographic June 1998



Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Squalĭdae — Squalĭdae, Haifische …   Meyers Großes Konversations-Lexikon

  • Squalidae — Squalĭdae, die Haifische …   Kleines Konversations-Lexikon

  • Squalidae —   [lateinisch], die Dornhaie.   …   Universal-Lexikon

  • Squalidae —   Squalidae Mielga Squalus acan …   Wikipedia Español

  • Squalidae — Squalidae …   Wikipédia en Français

  • Squalidae — Dornhaie Dornhai (Squalus acanthias) Systematik Überklasse: Kiefermäuler (Gnathostomata) …   Deutsch Wikipedia

  • Squalidae — paprastieji dygliarykliai statusas T sritis zoologija | vardynas taksono rangas šeima apibrėžtis Visi vandenynai, iki 2,7 km gelmės. Gyvavedžiai. Kūno ilgis – iki 1–2 m. 20 genčių, per 70 rūšių. Anksčiau buvo išskiriama atskira Dalatiidae šeima.… …   Žuvų pavadinimų žodynas

  • Squalidae — noun dogfishes having a spine in each dorsal fin • Syn: ↑family Squalidae • Hypernyms: ↑fish family • Member Holonyms: ↑Elasmobranchii, ↑subclass Elasmobranchii, ↑Selachii, ↑ …   Useful english dictionary

  • squalidae — squa·li·dae …   English syllables

  • Семейство Колючие или Катрановые акулы (Squalidae) —          В этом семействе объединены довольно мелкие акулы, характерной особенностью которых являются острые колючие шипы, расположенные перед первым и вторым спинными плавниками. Известно 9 родов и около двух десятков видов катрановых акул. Они… …   Биологическая энциклопедия

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”