分类 / Names
俗名 | 同种异名 | Catalog of Fishes(属, 种) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鳃亚纲 (鲨鱼与 鱼) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生态学
海洋 深海底的; 深度上下限 253 - 761 m (Ref. 11228). 深水域; 20°S - 32°S, 30°E - 38°E (Ref. 114953)
Western Indian Ocean: southern Mozambique to Plettenberg Bay, South Africa.
西印度洋: 莫三比克南部到南非的普利登堡灣。
大小 / 重量 / 年龄
Maturity: Lm ? range ? - ? cm
Max length : 101 cm TL 雄鱼/尚未辨别雌雄; (Ref. 114953)
简单描述
检索表 | 型态特徵 | 形态测量图
An all-dark longnose skate with a greatly elongated, broadly triangular snout, and a stout tail - shorter than body and with mid-section swollen and triangular-shaped; disc with angular corners and smooth underside; small thorn at nape (Ref. 5578). Uniform dark grey above and below with black mucous pores on the underside (Ref. 2708, 5578).
一个全身黑色的长鼻 鱼具有一个很大延长, 宽广三角形的吻, 与一矮胖的尾部短于身体与具有中段的肥大与三角形的; 体盘有棱角与下面平滑的; 在后颈的小刺.(参考文献 5578) 全深灰色的上面与下面在下面上有黑色的黏液孔。 (参考文献 2708,5578)
Found on upper and mid-continental slope (Ref. 114953). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Males reaches maturity at ca. 83-98 cm TL; smallest known specimen at 24 cm TL; hatching size possibly at ca. 24 cm TL (Ref. 114953).
卵生的.(参考文献 50449) 卵在贝壳上有像触角一样的突出。 (参考文献 205)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔鱼
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).西印度洋: 莫三比克南部到南非的普利登堡灣。
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)
人类利用
渔业: 没有兴趣
工具
特别资料
下载 XML
网络资源
Estimates based on models
Preferred temperature (Ref.
123201): 9.7 - 12.9, mean 11.5 °C (based on 27 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).
营养阶层 (Ref.
69278): 3.9 ±0.6 se; based on size and trophs of closest relatives
回复力 (Ref.
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): High vulnerability (61 of 100).
