Squalus shiraii, Shirai's spurdog

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Squalus shiraii Viana & Carvalho, 2020

Shirai's spurdog
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Image of Squalus shiraii (Shirai\
No image available for this species;
drawing shows typical species in Squalidae.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436);  shiraii: Named for Dr. Shigeru M. Shirai, Japanese ichthyologist from Tokyo University of Agriculture, for his valuable contributions to Systematics of Squaliformes..

Environment: milieu / climate zone / depth range / distribution range Ökologie

seewasser; tiefenbereich 310 - 390 m (Ref. 122378). Subtropical

Verbreitung Länder | FAO Gebiete | Ecosystems | Vorkommen | Point map | Einführungen | Faunafri

Northwest Pacific: Japan

Size / Gewicht / Alter

Maturity: Lm ?  range ? - ? cm
Max length : 68.5 cm TL Männchen/unbestimmt; (Ref. 122378); 77.0 cm TL (female)

Kurzbeschreibung Morphologie | Morphometrie

Wirbelzahl: 120 - 123. This species is distinguished from S. mitsukurii by the following characters: colour of body brown dorsally; caudal fin with ventral and dorsal tips markedly tapered and broadly white; dermal denticles uniscuspidate and lanceolate; larger number of vertebrae, precaudal 91-94, total 120-123 (vs. body dark grey to black; caudal fin with ventral and dorsal tips rounded and not white in colour; denticles tricuspidate and rhomboid; precaudal 86-90 and total 116-117 S. mitsukurii) (Ref. 122378).

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

Found in shallow waters of the upper continental slope (Ref. 122378).

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

Hauptreferenz Upload your references | Referenzen | Koordinator : Compagno, Leonard J.V. | Partner

Viana, S.T.F.L. and M.R. de Carvalho, 2020. Squalus shiraii sp. nov. (Squaliformes, Squalidae), a new species of dogfish shark from Japan with regional nominal species revisited. Zoosystematics and Evolution 96(2):275-311. (Ref. 122378)

IUCN Rote Liste Status (Ref. 130435)

  gefährdet, siehe IUCN Red List (VU) (A2bd); Date assessed: 12 May 2022

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

  Harmless





Nutzung durch Menschen

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Internet Quellen

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher Einträge suchen | CISTI | Catalog of Fishes: Gattung, Arten | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: Genom, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Gehe zu, Suchen | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = No PD50 data   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00339 (0.00162 - 0.00707), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.3   ±0.3 se; based on size and trophs of closest relatives
Widerstandsfähigkeit (Ref. 120179):  niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (51 of 100).