Elasmobranchii (haaien en roggen) (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.
Eponymy: Dr Shigeru M Shirai is a Japanese ichthyologist. [...] (Ref. 128868), visit book page.
Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied
Ecologie
marien pelagic-oceanic; diepte 310 - 390 m (Ref. 122378). Subtropical
Northwest Pacific: Japan
Grootte / Gewicht / Leeftijd
Maturiteit: Lm ?  range ? - ? cm
Max length : 68.5 cm TL mannelijk / geslacht onbekend; (Ref. 122378); 77.0 cm TL (female)
Korte beschrijving
Determinatiesleutels | Morfologie | Morfometrie
Wervels: 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).
Cross section: angular.
Found in shallow waters of the upper continental slope (Ref. 122378).
Levenscyclus en paargedrag
Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven
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)
Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-2 (Global))
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van potentieel belang
Tools
Speciale rapporten
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Internetbronnen
Schattingen op basis van modellen
Fylogenetische diversiteitsindex (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00355 (0.00168 - 0.00751), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisch niveau (Ref. 69278) |
4.1 ±0.4 se; based on size and trophs of closest relatives |
Weerstandsvermogen (Ref. 120179) |
laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Preliminary K or Fecundity.). |
Kwetsbaarheid van de visserij (Ref. 59153) |
High vulnerability (62 of 100). 🛈 |