http://www.fishbase.org/Summary/speciesSummary.php?genusname=Apristurus&speciesname=japonicus ---> http://192.134.151.83/Summary/speciesSummary.php?genusname=Apristurus&speciesname=japonicus http://192.134.151.83/Summary/speciesSummary.php?genusname=Apristurus&speciesname=japonicus ---> https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Apristurus&speciesname=japonicus https://fishbase.mnhn.fr/Summary/speciesSummary.php?genusname=Apristurus&speciesname=japonicus ---> https://fishbase.mnhn.fr/summary/Apristurus-japonicus.html
Apristurus japonicus, Japanese catshark : fisheries
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Elasmobranchii (sharks and rays) >
Carcharhiniformes
(Ground sharks) >
Pentanchidae
(Deepwater catsharks)
Etymology:
Apristurus:
a-
, Latin privative, i.e., without;
pristis
, from
pristes
(Gr.), sawyer (but here meaning saw);
oura
(Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related
Pristiurus
(=
Galeus
). (
See ETYFish
)
;
japonicus:
-icus
(L.), belonging to: Japan, known only from the northwest Pacific off Chiba Prefecture, Honshu, Japan. (
See ETYFish
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; bathydemersal. Deep-water; 36°N - 34°N
Northwest Pacific: off Chiba Prefecture, Honshu, Japan. Collected from the East China Sea (Ref.
559
).
Size / Weight / Age
Maturity: L
m
 
?
  range ? - ? cm
Max length : 71.0 cm TL male/unsexed; (Ref.
244
); 63.0 cm TL (female)
Biology little-known. Oviparous. Utilized for oil, human consumption and fishmeal or fish cakes.
Life cycle and mating behavior
Maturity
|
Reproduction
|
Spawning
|
Eggs
|
Fecundity
|
Larvae
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref.
50449
).
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
)
IUCN Red List Status (Ref.
130435
)
Least Concern (LC)
; Date assessed:
28 August 2019
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
Fisheries: minor commercial
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00176 - 0.00714), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 4.0 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref.
120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <10).
Fishing Vulnerability (Ref.
59153
): Moderate to high vulnerability (48 of 100).
Price category (Ref.
80766
):
Low
.
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- 20 July 2016
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