Pristiophorus japonicus, Japanese sawshark : fisheries

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Pristiophorus japonicus Günther, 1870

Japanese sawshark
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Pristiophorus japonicus   AquaMaps   Data sources: GBIF OBIS
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Image of Pristiophorus japonicus (Japanese sawshark)
Pristiophorus japonicus
Picture by FAO

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

Elasmobranchii (haaien en roggen) (sharks and rays) > Pristiophoriformes (Saw sharks) > Pristiophoridae (Saw sharks)
Etymology: Pristiophorus: pristio-, presumably derived from prio (Gr.), to saw, but treated here as a noun (a saw); phorus, from phoreus (Gr.), bearer or carrier, referring to saw-like snout (note also that pristis is Greek for sawfish). (See ETYFish);  japonicus: -icus (L.), belonging to: Japan, where type locality (not specified) is situated. (See ETYFish).
More on author: Günther.

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

; marien demersaal; diepteverspreiding 0 - 500 m (Ref. 54710). Deep-water; 48°N - 22°N, 118°E - 145°E (Ref. 54710)

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

Northwest Pacific: Japan, Korea, northern China. Does not occur in the Western Central Pacific (Ref. 31368).

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 136.0 cm TL (female)

Korte beschrijving Morfologie | Morfometrie

Pristiophorus japonicus has a long, narrow, and narrowly tapering rostrum (rostrum length is 26-29% of TL), distance from rostral tip to barbels about equal or slightly greater than distance from barbels to mouth (1:1.1-1.2); distance from rostral barbels to nostrils about equal to distance from nostrils to 1st gill slits. About 15-26 large rostral teeth on each side of the rostrum in front of the barbels, 9-17+ behind them; distance from mouth to nostrils 1.1-1.2 times internarial space. Tooth rows 34-58 in upper jaw. Dorsal and pectoral fins covered with denticles in large specimens. Lateral trunk denticles largely unicuspidate. First dorsal fin origin behind free rear tips of pectorals by eye length or more (Ref. 247). Caudal fin almost straight, with slender upper and lower lobes; pectoral well developed but are not ray-like (Ref. 6871).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Lives on continental shelves and upper slopes on or near the bottom. Also found in coastal waters on sand or mud bottoms. Feeds on small bottom organisms using its barbels to poke the bottom with its snout. Ovoviviparous, with 12 young in a litter.

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

Ovoviviparous, embryos feed solely on yolk (Ref. 50449).

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

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. 247)

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

  Niet bedreigd (LC) ; Date assessed: 27 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





Gebruik door de mens

Visserij: commercieel
FAO - Visserij: soortsprofiel; Publication: search | FishSource |

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Internet-bronnen

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Bekijk FishWatcher gegevens | CISTI | Catalog of Fishes: Genus, Soort(en) | DiscoverLife | ECOTOX | FAO - Visserij: soortsprofiel; Publication: search | Faunafri | Fishipedia | 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 | Socotra Atlas | Tree of Life | Wikipedia: ga naar, zoek | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates based on models

Preferred temperature (Ref. 115969): 7.7 - 21.8, mean 17.4 °C (based on 199 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.8   ±0.58 se; based on food items.
Weerstandsvermogen (Ref. 120179):  laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec=12).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (82 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .
Prijsklasse (Ref. 80766):   High.