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).
Eponymy: Dr George Gordon Campbell (1893–1977) was a South African physician and naturalist who inspired the Foundation for Marine Biological Research and was President of it, for which he was honoured in the name of the skate. [...] (Ref. 128868), visit book page.
Environment: milieu / climate zone / 深度上下限 / distribution range
生态学
海洋 居于水底的; 深度上下限 137 - 403 m (Ref. 5578). 亞熱帶的; 20°S - 31°S, 30°E - 38°E (Ref. 114953)
分布
国家 | FAO区域 | 生态系 | 标本纪录 | 分布图 | 简介 | Faunafri
Western Indian Ocean: off central Mozambique to Durban, South Africa.
西印度洋: 外海的莫三比克中部與南非的德爾班。
大小 / 重量 / 年龄
成熟度: Lm ? range ? - ? cm
Max length : 66.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5578)
简单描述
检索表 | 型态特徵 | 形态测量图
A black-spotted longnose skate with an elongated, acutely triangular snout, and a stout tail- just shorter than body and slightly swollen along the mid-section; disc with rounded corners and smooth underside except for small denticles on edges and tip of snout; small thorns on nape and midback to 1st dorsal fin (Ref. 5578). Medium grey to brownish with numerous small dark spots dorsally; grey with conspicuous black pores ventrally (Ref. 5578).
Body shape (shape guide): other.
一个有黑色斑点的长鼻 鱼有一个瘦长的, 锐三角形的吻, 与一个矮胖的尾部- 略短于身体与些微肿大沿着中段的; 体盘有圆角与下面平滑的在边缘与吻尖上除了小的细齿; 在后颈与背部中央到第一背鳍上的小的刺.(参考文献 5578) 中等的灰色对褐色的有很多的小深色的斑点背面; 灰色的腹地有明显的黑色孔.(参考文献 5578)
Found on the bottom of the outer shelf and upper slope (Ref. 5578). Probably caught by trawlers (Ref. 5578).Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Males reaches maturity at ca. 57 cm TL, females at ca. 64 cm TL (Ref. 114953)
栖息于外部大陆架与上层斜坡的底部了。 (参考文献 5578) 可能被底拖网捕获了。 (参考文献 5578)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
成熟度 | 繁殖 | 产卵场 | 卵 | 孕卵数 | 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: 外海的莫三比克中部與南非的德爾班。
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)
世界自然保护联盟红皮书 (Ref. 130435: Version 2025-1)
临近濒危 (NT) (A2d); Date assessed: 18 September 2019
人类利用
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Estimates based on models
Preferred temperature (参考文献
123201): 8.8 - 21.2, mean 14.4 °C (based on 4 cells).
Phylogenetic diversity index (参考文献
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00131 - 0.00604), 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 (参考文献
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
回复力 (参考文献
120179): 低的, 最小族群倍增时间4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (46 of 100).
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