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Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
Eponymy: John Tee-Van (1897–1967) joined the staff of the Bronx Zoo (1911) as an assistant keeper in the bird house. [...] (Ref. 128868), visit book page.
Lingkungan: lingkungan / zona iklim / kisaran kedalaman / jangkauan distribusi
Ekologi
laut batidemersal; kisaran kedalaman 310 - 1900 m (Ref. 114953). Deep-water; 35°N - 4°S, 97°W - 35°W (Ref. 114953)
Western Atlantic: North Carolina (Ref. 114953), off Florida (Ref. 12965, 13608) including Gulf of Mexico (Ref. 114953) to northern coast of Colombia, and off Suriname (Ref. 13608 and Brazil (Ref. 53436)
Ukuran / Berat / umur
Kematangan: Lm ?  range ? - ? cm
Max length : 84.0 cm TL jantan/; (Ref. 114953)
Lack of thorns along the midbelt of the disc from the level of the axils of the pectoral fins to the vicinity of the spiracles. Tails widen rearward toward the dorsal fins. No interspace between the bases of the dorsal fins. Upper surface pale brown, darker along posterior margins of disc, pelvic fins and tail. Dorsal fins and caudal black. Lower surface margined with black rearward from the level of the mouth (Ref. 6902).
Body shape (shape guide): other.
Found on upper continental slope (Ref. 114953). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Males reaches maturity at ca.63 cm TL (Ref. 114953).
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 IUCN Red List (Ref. 130435: Version 2025-2 (Global))
ancaman kepada manusia
Harmless
penggunaan manusia
Perikanan: nilai komersial kecil
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimasi berdasarkan model
Indeks keanekaragaman filogenetik (Acuan 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00288 (0.00136 - 0.00610), b=3.25 (3.08 - 3.42), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Tingkat Trofik (Acuan 69278) |
3.8 ±0.6 se; based on size and trophs of closest relatives |
Daya lenting (Acuan 120179) |
Rendah, Waktu penggandaan populasi minimum 4.5 - 14 tahun (Fec assumed to be <100). |
Kerentanan Penangkapan Ikan (Ref. 59153) |
Moderate to high vulnerability (55 of 100). 🛈 |
kategori harga (Ref. 80766) |
Medium.
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