Shortspine spurdog: Difference between revisions

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{{Short description|Species of shark}}
{{Taxobox
{{speciesbox
| color = pink
| name = Shortspine spurdog
| name = Shortspine spurdog
| image = Fish4474 - Flickr - NOAA Photo Library.jpg
| status = DD
| trend =
| status = EN
| status_system = IUCN3.1
| image =
| status_ref = <ref name=iucn>Finucci, B., Cheok, J., Cotton, C.F., Kulka, D.W., Neat, F.C., Pacoureau, N., Rigby, C.L., Tanaka, S. & Walker, T.I. 2020. ''Squalus mitsukurii''. The IUCN Red List of Threatened Species {{doi|10.2305/IUCN.UK.2020-3.RLTS.T152781967A2957982.en}}. </ref>
| regnum = [[Animal]]ia
⚫
| genus = Squalus
| phylum = [[Chordate|Chordata]]
⚫
| species = mitsukurii
| classis = [[Chondrichthyes]]
⚫
| range_map = Squalus mitsukurii distmap.png
| subclassis = [[Elasmobranchii]]
| range_map_caption = Range of the shortspine spurdog
| ordo = [[Squaliformes]]
| authority = [[David Starr Jordan|D. S. Jordan]] & [[John Otterbein Snyder|Snyder]], 1903
| familia = [[Squalidae]]
| synonyms = ''Squalus acutirostris'' <small>Chu, Meng & Li, 1984</small>
⚫
| genus = [[Squalus]]
⚫
| species = '''''S. mitsukurii'''''
⚫
| binomial = ''Squalus mitsukurii''
| binomial_authority = Jordan & Snyder, 1903
}}
}}
{{sharksportal}}
⚫
The '''shortspine spurdog''', ''Squalus mitsukurii'', is a [[dogfish]], a member of the [[family (biology)|family]] [[Squalidae]], found circumglobally on the [[continental shelf|continental]] and insular shelves and upper slopes, in [[temperate]] and [[subtropical]] oceans between [[latitude]]s 45° N and 55° S, from the surface to 950 m. Its length is up to 75&nbsp;cm.


⚫
The '''shortspine spurdog''' ('''''Squalus mitsukurii''''') is a [[Squaliformes|dogfish]], a member of the [[family (biology)|family]] [[Squalidae]], found on [[continental shelf|continental shelves]] off Japan in [[temperate]] waters, from the surface to 950 m. Its length is up to 75&nbsp;cm.<ref>{{FishBase_species| genus = Squalus | species = mitsukurii | month = July | year = 2006}}</ref>
The shortspine spurdog is a large dogfish with a long, angular snout and a small mouth slightly more than half the snout length. The body is usually without spots, and the first [[dorsal fin]] spine is over the [[pectoral fin]]s. It feeds on bony fishes including [[hake]], [[snoek]], [[conger eel]]s, [[lanternfish]]es, [[cephalopod]]s, and [[crustacean]]s.


==Taxonomy==
Coloration is pearl-grey above, white below, with white-edged fins, and sides rarely with white spots.
The shortspine dogfish was once seen as a circumglobal species by many authors, including Compagno (1984) and Last & Stevens (1994).<ref>Compagno, L.J.V.,1984 FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO.</ref><ref>Last, P.R. and J.D. Stevens,1994 Sharks and rays of Australia. CSIRO, Australia. 513 p.</ref> However, a series on papers published since 2007 have shown that a number of species synonymized with ''S. mitsukurii'' are distinct, and that the Hawaiian population of ''S. mitsukurii'' represent a distinct species, the [[Hawaiian spurdog]].<ref>Last, P.R., White, W.T. and Motomura, H. 2007. Description of Squalus chloroculus sp. nov., a new spurdog from southern Australia, and the resurrection of S. montalbani Whitley. In: P.R Last, W.T. White and J.J. Pogonoski (eds) (eds), Descriptions of New Dogfishes of the genus Squalus (Squaloidea: Squalidae), pp: 55‒69.. CSIRO,, Australia.</ref><ref>Duffy, C.A.J. and P.R. Last, 2007. Redescription of the northern spiny dogfish Squalus griffini Phillipps, 1931 from New Zealand. pp. 91-100. In P.R. Last, W.T. White and J.J. Pogonoski Descriptions of new dogfishes of the genus Squalus (Squaloidea: Squalidae). CSIRO Marine and Atmospheric Research Paper No. 014. 130 pp.</ref><ref>Daly-Engel TS, Koch A, Anderson JM, Cotton CF, Grubbs RD (2018) Description of a new deep-water dogfish shark from Hawaii, with comments on the Squalus mitsukurii species complex in the West Pacific. ZooKeys 798: 135-157. https://doi.org/10.3897/zookeys.798.28375</ref>


<gallery mode=packed>
Its reproduction is [[ovoviviparous]], with about 4 to 9 pups in a litter.
HutoTZ.jpg|Head

Squalus mitsukurii jaws.jpg|Jaws
==See also==
Squalus mitsukurii upper teeth.jpg|Upper teeth
* [[List of sharks]]
Squalus mitsukurii lower teeth.jpg|Lower teeth
</gallery>


==References==
==References==
* {{FishBase_species| genus = Squalus | species = mitsukurii | month = July | year = 2006}}
{{Commons category|Squalus mitsukurii}}
{{reflist}}

{{Selachimorpha|S.}}
{{Taxonbar|from=Q2314437}}


{{DEFAULTSORT:Shortspine spurdog}}
[[Category:Sharks]]
[[Category:Squalidae]]
[[Category:Squalus]]
[[Category:Squaliformes]]
[[Category:Fish described in 1903]]
[[Category:ovoviviparous fish]]
[[Category:Taxa named by David Starr Jordan]]

Latest revision as of 04:01, 4 April 2024

Shortspine spurdog
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Subdivision: Selachimorpha
Order: Squaliformes
Family: Squalidae
Genus: Squalus
Species:
S. mitsukurii
Binomial name
Squalus mitsukurii
Range of the shortspine spurdog
Synonyms

Squalus acutirostris Chu, Meng & Li, 1984

The shortspine spurdog (Squalus mitsukurii) is a dogfish, a member of the family Squalidae, found on continental shelves off Japan in temperate waters, from the surface to 950 m. Its length is up to 75 cm.[2]

Taxonomy[edit]

The shortspine dogfish was once seen as a circumglobal species by many authors, including Compagno (1984) and Last & Stevens (1994).[3][4] However, a series on papers published since 2007 have shown that a number of species synonymized with S. mitsukurii are distinct, and that the Hawaiian population of S. mitsukurii represent a distinct species, the Hawaiian spurdog.[5][6][7]

  • Head
    Head
  • Jaws
    Jaws
  • Upper teeth
    Upper teeth
  • Lower teeth
    Lower teeth

References[edit]

Wikimedia Commons has media related to Squalus mitsukurii.
  1. ^ Finucci, B., Cheok, J., Cotton, C.F., Kulka, D.W., Neat, F.C., Pacoureau, N., Rigby, C.L., Tanaka, S. & Walker, T.I. 2020. Squalus mitsukurii. The IUCN Red List of Threatened Species doi:10.2305/IUCN.UK.2020-3.RLTS.T152781967A2957982.en.
  2. ^ Froese, Rainer; Pauly, Daniel (eds.) (2006). "Squalus mitsukurii" in FishBase. July 2006 version.
  3. ^ Compagno, L.J.V.,1984 FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO.
  4. ^ Last, P.R. and J.D. Stevens,1994 Sharks and rays of Australia. CSIRO, Australia. 513 p.
  5. ^ Last, P.R., White, W.T. and Motomura, H. 2007. Description of Squalus chloroculus sp. nov., a new spurdog from southern Australia, and the resurrection of S. montalbani Whitley. In: P.R Last, W.T. White and J.J. Pogonoski (eds) (eds), Descriptions of New Dogfishes of the genus Squalus (Squaloidea: Squalidae), pp: 55‒69.. CSIRO,, Australia.
  6. ^ Duffy, C.A.J. and P.R. Last, 2007. Redescription of the northern spiny dogfish Squalus griffini Phillipps, 1931 from New Zealand. pp. 91-100. In P.R. Last, W.T. White and J.J. Pogonoski Descriptions of new dogfishes of the genus Squalus (Squaloidea: Squalidae). CSIRO Marine and Atmospheric Research Paper No. 014. 130 pp.
  7. ^ Daly-Engel TS, Koch A, Anderson JM, Cotton CF, Grubbs RD (2018) Description of a new deep-water dogfish shark from Hawaii, with comments on the Squalus mitsukurii species complex in the West Pacific. ZooKeys 798: 135-157. https://doi.org/10.3897/zookeys.798.28375
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