Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien demersaal. Tropical
Northwest Pacific: southern Japan to the China seas. Possibly in Thailand (Ref. 9918). Reported from India (Ref. 45255).
Lengte bij maturiteit / Grootte / Gewicht / Leeftijd
Maturity: Lm 57.0, range 55 - 59 cm
Max length : 100.0 cm TL mannelijk / geslacht onbekend; (Ref. 637)
Inhabits sandy or muddy bottom in shallow waters (Ref. 11230). Feeds on benthic animals. Spines covered with skin with poisonous glands. Ovoviviparous. Used as 'kamaboko' material (Ref. 637). Caught often by demersal trawl, trammel and gillnet fisheries, and occasionally using tangle nets.Utilized for its meat, but of limited value due to its typically small size (Ref.58048).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205). Gives birth to ~3 pups; born between 20-22 cm WD (Ref.58048).
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gebruik door de mens
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Estimates based on models
Preferred temperature (Ref.
123201): 17.9 - 29.1, mean 28.1 °C (based on 1500 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00776 (0.00352 - 0.01710), b=3.09 (2.89 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.8 ±0.61 se; based on food items.
Weerstandsvermogen (Ref.
120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Fec assumed to be <10).
Fishing Vulnerability (Ref.
59153): High vulnerability (60 of 100).