Ryukyu Islands country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: ttp://en.wikipedia.org/wiki/Ryukyu_Island
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database:

Common names from other countries

Aiguillat togari, Galludo japones, قِرش الإسكندر ياباني, ... more

Classificatie / Names Lokale 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).

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

marien; diepte 150 - 300 m (Ref. 31367). Deep-water; 41°N - 5°N

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

Western Pacific: southeastern Japan and East China Sea, including the Republic of Korea, the Philippines, and the Arafura Sea (Ref. 9819).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: L_m ?, range 79 - ? cm
Max length : 91.0 cm TL mannelijk / geslacht onbekend; (Ref. 247)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 2; Anale stekels: 0.

Found on the outer continental and insular shelves and uppermost slopes, presumably on or near sandy-mud bottom (Ref. 31367, 11230). Ovoviviparous (Ref. 205).

Levenscyclus en paargedrag Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven

Distinct pairing with embrace (Ref. 205).

Hoofdreferentie 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. 130435)

Bedreigd (EN) (A2d); Date assessed: 30 August 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

Visserij: van minder commercieel belang

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 12.4 - 19.6, mean 15.3 (based on 39 cells).

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [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).

Trofisch niveau (Ref. 69278): 4.4 ±0.4 se; based on size and trophs of closest relatives

Weerstandsvermogen (Ref. 120179): laag, minimale populatieverdubbelingstijd 4,5-14 jaar (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): High vulnerability (56 of 100).

Prijsklasse (Ref. 80766): Medium.

Squalus japonicus Ishikawa, 1908