This species is a synonym of Bathytoshia lata (Garman, 1880) according to Last et al., 2016 (Ref. 114953). The species page will be removed.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal. Temperate
Northwest Pacific: northern Japan to the East China Sea.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 120 - ? cm
Max length : 202 cm WD male/unsexed; (Ref. 58048)
Demersal on insular and continental shelves (Ref.58048). Ovoviviparous (Ref. 50449). Caught often by demersal tangle net and longline fisheries operating in shelf waters. Utilized for its meat, cartilage and thorny tail (Ref.58048).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
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).
Nishida, K. and K. Nakaya, 1990. Taxonomy of the genus Dasyatis (Elasmobranchia, Dasyatidae) from the North Pacific. NOAA Tech. Rept. NMFS 90:327-346. (Ref. 7445)
IUCN Red List Status (Ref. 120744)
CITES (Ref. 115941)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5002 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00282 - 0.01623), b=3.07 (2.87 - 3.27), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.5 ±0.37 se; Based on food items.
Resilience (Ref. 69278
): Low, minimum population doubling time 4.5 - 14 years (Assuming fecundity<100).
Vulnerability (Ref. 59153
): Very high vulnerability (90 of 100) .