Hemitriakis japanica, Japanese topeshark : fisheries

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Hemitriakis japanica (Müller & Henle, 1839)

Japanese topeshark
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Hemitriakis japanica   AquaMaps   Data sources: GBIF OBIS
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Hemitriakis japanica
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Classificatie / Namen Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Triakidae (Houndsharks) > Galeorhininae
Etymology: Hemitriakis: hemi-, from hemisys (Gr.), half, being a genus that Herre believed was “most closely related” to Triakis (See ETYFish)japanica: -ica (L.), belonging to: Japan, type locality (See ETYFish).
More on authors: Müller & Henle.

Environment: milieu / Klimaatzone / Diepte / distribution range Ecologie

marien demersaal; diepte 20 - 345 m (Ref. 86942). Subtropical; 40°N - 19°N, 112°E - 141°E

Verspreiding Landen | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

Northwest Pacific: China, Taiwan, Korea, and Japan. Nominal records from Ambon, Indonesia (unconfirmed and based on a specimen close to if not identical to Hemitriakis abdita) and New Caledonia (Ref. 13563).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturiteit: Lm 91.5, range 81 - 102 cm
Max length : 110 cm TL mannelijk / geslacht onbekend; (Ref. 244); 120.0 cm TL (female); max. gerapporteerde leeftijd: 15 Jaren (Ref. 9031)

Biologie     Verklarende woordenlijst (bv. epibenthic)

Occurs close inshore and offshore down to at least 100 m depth. Presumably feeds on small fishes, cephalopods and crustaceans. Ovoviviparous, with 8 to 22 young in a litter. Size at birth about 20 to 21 cm. Utilized for human consumption.

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

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

Hoofdreferentie Upload uw referenties | 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 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)

Status op de Rode Lijst van het IUCN (Ref. 130435: Version 2025-1)

  Bedreigd (EN) (A2d); Date assessed: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

Visserij: commercieel
FAO - Publication: search | FishSource |

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Internetbronnen

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | Websites from users | Bekijk FishWatcher | CISTI | Catalog of Fishes: Genus, Soort(en) | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GloBI | Google Books | Google Scholar | Google | IGFA World Record | Nationale databanken | OneZoom | Open Tree of Life | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | TreeBase | Tree of Life | Wikipedia: ga naar, zoek | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 9.7 - 27, mean 20.2 °C (based on 252 cells).
Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00427 (0.00180 - 0.01010), b=3.04 (2.84 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  4.4   ±0.4 se; based on diet studies.
Weerstandsvermogen (Ref. 120179):  Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Fec=8).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (72 of 100). 🛈
Prijsklasse (Ref. 80766):   High.