Squalus notocaudatus, Bartail spurdog

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Squalus notocaudatus Last, White & Stevens, 2007

Bartail spurdog
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Squalus notocaudatus   AquaMaps   Data sources: GBIF OBIS
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Image of Squalus notocaudatus (Bartail spurdog)
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drawing shows typical species in Squalidae.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

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);  notocaudatus: Name from Latin 'nota' for mark and 'cauda' for tail, referring to the dark bar on the caudal fin..
More on authors: Last, White & Stevens.

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

; marien; diepteverspreiding 225 - 454 m (Ref. 58440). Tropical

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Western Pacific: Queensland, Australia.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 61.9 cm TL mannelijk/geslacht niet bekend; (Ref. 58440)

Korte beschrijving Morfologie | Morfometrie

This species in the 'highfin megalops group' is distinguished by the following set of characters: abdomen depth 8.6-11.1% TL; pre-vent length 45.3-46.5% TL, 1.9-2.0 times dorsal caudal margin; pre-second dorsal length 3.6-4.0 times pectoral-fin anterior margin, 2.4-2.6 times dorsal caudal margin; head width 1.4-1.6 times abdomen width; preoral length 2.8-3.2 times the horizontal prenarial length, 8.4-9.5% TL; head length 3.8-4.3 times its eye length; mouth width 3.4-4.3 times the length of upper labial furrow; interorbital width 1.4-1.5 times the horizontal preorbital length; fifth gill slit height 1.9-2.1% TL; strongly bifurcated anterior nasal flap; first dorsal fin upright, upper posterior margin almost vertical, greatest concavity closer to free rear tip than fin apex; posterior margin of second dorsal fin deeply concave; second dorsal-fin spine with a broad base; pectoral fin of adult weakly falcate, anterior margin long, 14.6-16.4% TL; both dorsal and ventral surfaces are pale; dorsal fins pale with obvious dark tips; first dorsal-fin spine and base of soft portion of dorsal fin both pale; caudal fin with broad white posterior margin; prominent dark, diagonal subterminal streak parallel to the upper posterior margin; flank denticles strongly tricuspid; monospondylous centra 47-49, precaudal centra 94-97, total centra 123-127 (Ref. 58440).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Distinct pairing with embrace (Ref. 205).

Voornaamste referentie Upload your references | Referenties | Coördinator : Compagno, Leonard J.V. | Medewerkers

Last, P.R., W.T. White and J.D. Stevens, 2007. New species of Squalus of the 'highfin megalops group' from the Australasian region. p. 39-53. 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 p. (Ref. 58440)

Status op de Rode Lijst van het IUCN (Ref. 125652)

  Niet bedreigd (LC) ; Date assessed: 03 August 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Preferred temperature (Ref. 115969): 8.7 - 17.5, mean 13 °C (based on 25 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00339 (0.00159 - 0.00720), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this Genus-BS (Ref. 93245).
Trophic level (Ref. 69278):  4.2   ±0.3 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153):  Moderate vulnerability (45 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .