Elasmobranchii (tubarões e raias) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
More on authors: Fricke & Al-Hassan.
Issue
The species does not belong to the genus Okamejei, evidenced e.g. by its overall appearance. Due to the lack of an adult male specimen, it is currently placed as incertae sedis in the general genus Raja (Ref. 101518).
Environment: milieu / climate zone / depth range / distribution range
Ecologia
marinhas demersal; intervalo de profundidade 0 - 15 m (Ref. 58018). Subtropical
Western Indian Ocean.
Tamanho / Peso / Idade
Maturity: Lm ?  range ? - ? cm
Max length : 46.0 cm TL macho/indeterminado; (Ref. 13710)
Found in shallow water over soft substrate (Ref. 13710). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
Ciclo de vida ou comportamento de acasalamento
Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
Status na Lista Vermelha da UICN (Ref. 130435)
Ameaça para os humanos
Harmless
Uso pelos humanos
Pescarias: sem interesse
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Preferred temperature (Ref.
123201): 24.8 - 29.3, mean 27.1 °C (based on 151 cells).
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00124 - 0.00582), b=3.26 (3.09 - 3.43), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.6 ±0.6 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (36 of 100).
Nutrients (Ref.
124155): Calcium = 43.4 [6.6, 211.2] mg/100g; Iron = 0.932 [0.247, 2.688] mg/100g; Protein = 18.7 [15.4, 21.8] %; Omega3 = 0.592 [0.171, 2.143] g/100g; Selenium = 12 [3, 41] μg/100g; VitaminA = 13 [4, 38] μg/100g; Zinc = 0.712 [0.330, 1.286] mg/100g (wet weight);