Ikan bertulang rawan (sharks and rays)
(Skates and rays) > Rajidae
Etymology: Raja: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
; laut dasar (demersal); kisaran kedalaman 2 - 343 m (Ref. 56504), usually 20 - 50 m (Ref. 117283). Subtropical; 46°N - 30°N, 10°W - 36°E
Eastern Atlantic: endemic to the Mediterranean but may spread to the Strait of Gibraltar, northern Morocco and possibly south to Mauritania.
Size / Weight / umur
Maturity: Lm ?  range ? - ? cm
Max length : 70.0 cm TL jantan/; (Ref. 4426)
Inhabit inshore waters (Ref. 3167). Depth range to 170 m (Ref. 04426), and from 333-343 m in the eastern Ionian Sea (Ref. 56504). Feed on all kinds of benthic animals (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 4.5 cm long and 3.0 cm wide (Ref. 41304). Minimum depth range (Ref. 117283).
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Spawning peak in summer to early autumn with 30 to more than 100 egg-cases per year depending on the size of the female (Ref. 3167). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).
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 IUCN Red List (Ref. 123251)
CITES (Ref. 123416)
ancaman kepada manusia
Perikanan: nilai komersial kecil
Umur / SaizPertumbuhanpanjang-beratpanjang-panjangukuran frekuensiMorfometrikMorfologiLarvaDinamika larvapemulihanKelimpahanBRUVS
AcuanBudidaya airprofil budidaya airStrainGenetikaFrekuensi alelDiturunkanPenyakit-penyakitPengolahanNutrientsMass conversion
muat turun XML
Estimates based on models
Preferred temperature (Ref. 115969
): 13.3 - 15.7, mean 14.3 °C (based on 100 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00164 - 0.00442), b=3.23 (3.09 - 3.37), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.8 ±0.6 se; based on diet studies.
Generation time: 2.4 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Daya lenting (Ref. 120179
): Rendah, Waktu penggandaan populasi minimum 4.5 - 14 tahun (Fec assumed to be <100).
keancaman (Ref. 59153
): Low to moderate vulnerability (32 of 100) .
Nutrients (Ref. 124155
): Calcium = 48.9 [5.7, 290.1] mg/100g ; Iron = 1.18 [0.21, 4.46] mg/100g ; Protein = 17.5 [14.6, 19.7] % ; Omega3 = 0.586 [0.259, 1.409] g/100g ; Selenium = 28.3 [6.2, 108.6] μg/100g ; VitaminA = 5.2 [1.2, 23.3] μg/100g ; Zinc = 0.606 [0.157, 2.246] mg/100g (wet weight);