You can sponsor this page

Squalus megalops (Macleay, 1881)

Shortnose spurdog
Voeg je waarneming toe in Fish Watcher
Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Squalus megalops   AquaMaps   Data sources: GBIF OBIS
Uploaden van je Foto's en video's
Pictures | Google afbeelding
Image of Squalus megalops (Shortnose spurdog)
Squalus megalops
Picture by Gloerfelt-Tarp, T.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Squaliformes (Bramble, sleeper and dogfish sharks) > Squalidae (Dogfish sharks)
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436).  More on author: Macleay.

Issue
Junior synonym Squalus acutipinnis Regan, 1908 is considered a valid species in Ref. 109601. Validity needs further confirmation.

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

; marien demersaal; diepteverspreiding 30 - 750 m (Ref. 27121), usually 80 - 300 m (Ref. 57911).   Subtropical; 9°C - 23°C (Ref. 57911); 42°N - 41°S, 18°W - 169°E (Ref. 247)

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

Eastern Indian Ocean: previously considered to be an Australian endemic (Ref. 49645). Eastern Atlantic: confirmed to occur in the Mediterranean (Ref. 93472). Dogfishes presently referred to in current literature as Squalus megalops appear to belong to a complex of similar species. Specimens from the different regions still need to be compared carefully (Ref. 6871).

Length at first maturity / Size / Gewicht / Leeftijd

Maturity: Lm 59.0, range 49 - 57 cm
Max length : 72.0 cm TL mannelijk/geslacht niet bekend; (Ref. 104718); 89.0 cm TL (female); Maximaal vermelde leeftijd: 32 jaren (Ref. 93445)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 2; Dorsale zachte stralen (totaal): 0; Anale stekels 0; Anale zachte stralen: 0. A small dogfish with a short, angular snout and a small mouth almost as wide as the snout is long; body without spots; 1st dorsal fin spine over pectoral fins (Ref. 5578). Bronze-grey above, white below; dorsal fins with black tips and white edges but markings inconspicuous in adults (Ref. 5578).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Found on the outer continental shelves and upper slopes, on or near the bottom (Ref. 31367); sublittoral below 130 m (Ref. 11230). Young mostly pelagic off the outer shelves (Ref. 5578). Aggregations by sex are regularly observed (Ref. 6871). Feeds on bony fishes, shrimps and other crustaceans, cephalopods and other elasmobranchs (Ref. 247). Ovoviviparous (Ref. 205), with 2 to 4 young in a litter (Ref. 247). Gestation period is 2 years (Ref. 36731). Utilized for human consumption, the flesh most appealing dried salted or smoked (Ref. 6871). Also consumed fresh (Ref. 31367). Minimum depth reported from Ref. 6808.

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

Distinct pairing with embrace (Ref. 205). Ovoviviparous, with 2 to 4 young in a litter. Gestation period is about two years. Size at birth 20-24 cm TL (Ref. 6871).

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

Last, P.R. and J.D. Stevens, 1994. Sharks and rays of Australia. CSIRO, Australia. 513 p. (Ref. 6871)

Status op de Rode Lijst van het IUCN (Ref. 120744)

  Onvoldoende gegevens (DD) ; Date assessed: 30 April 2003

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





Gebruik door de mens

Visserij: commercieel; vis voor de hengelsport: ja
FAO(Visserij: soortsprofiel; publication : search) | FishSource |

Meer informatie

Landen
FAO regio's
Ecosystems
Voorkomen
Introducties
Stocks
Ecologie
Dieet
voedselitems
Voedselconsumptie
voedselhoeveelheid
Populaire namen
Synoniemen
Metabolisme
Predators
Ecotoxicologie
Voortplanting
Geslachtsrijpheid
Kuitschieten
Spawning aggregation
Fecundity
Eieren
Ontwikkeling van de eieren
Leeftijd/Grootte
Groei
Lengte-gewicht parameters
Lengte-lengte parameters
Lengtefrequenties
Morfometrie
Morfologie
Larven
Populatiedynamica van de larven
recrutering
Abundantie
Referenties
Aquacultuur
Aquacultuurprofiel
Kweeklijnen
Genetica
Alleelfrequenties
Erfelijkheid
Ziekten
Verwerking
Mass conversion
Medewerkers
Illustraties
Stamps, Coins Misc.
Geluid
Ciguatera
Snelheid
Zwemstijl
Kieuwoppervlak
Otoliths
Hersenen
Zicht

Tools

Speciale rapporten

Download XML

Internet-bronnen

Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Bekijk FishWatcher gegevens | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genoom, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Nationale databanken | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Tree of Life | Wikipedia(ga naar, zoek) | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 12.8 - 22.8, mean 17.3 (based on 216 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00239 - 0.00633), b=3.07 (2.93 - 3.21), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.3   ±0.3 se; Based on diet studies.
Generation time: 27.5 ( na - na) years. Estimated as median LN(3)/K based on 2 growth studies.
Weerstandsvermogen (Ref. 120179):  zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (tmax = 32; Fec=2).
Kwetsbaarheid (Ref. 59153):  High to very high vulnerability (69 of 100) .
Prijsklasse (Ref. 80766):   Medium.