Ikan bertulang rawan (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
More on author: Whitley.
Environment: milieu / climate zone / depth range / distribution range
Ekologi
laut batidemersal; kisaran kedalaman 160 - 765 m (Ref. 114953), usually 400 - 550 m (Ref. 6871). Temperate; 28°S - 44°S, 112°E - 155°E (Ref. 114953)
Indo-West Pacific: southern Australia, from Western Australia to New South Wales.
Length at first maturity / Size / Weight / umur
Maturity: Lm ?, range 127 - ? cm
Max length : 184 cm TL jantan/; (Ref. 114953)
Occur over soft bottoms of the continental slope (Ref. 7300, 75154). Mainly feeds on small bony fishes (Ref. 114953). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205); egg cases ca. 19 cm long (Ref. 114953). This species reaches maturity at ca. 13 years. Length of mature males at ca. 120 cm TL; young hatch at ca. 26 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)
ancaman kepada manusia
Harmless
penggunaan manusia
Alat, peralatan
laporan khas
muat turun XML
Sumber internet
Estimates based on models
Preferred temperature (Ref.
123201): 7.8 - 10.8, mean 9.5 °C (based on 33 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00133 - 0.00596), b=3.25 (3.08 - 3.42), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 4.0 ±0.6 se; based on size and trophs of closest relatives
Daya lenting (Ref.
120179): Rendah, Waktu penggandaan populasi minimum 4.5 - 14 tahun (Assuming fecundity<100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).