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; 半咸淡水 深海底的; 深度上下限 ? - 439 m (Ref. 5578). 深水域; 24°S - 25°S, 35°E - 37°E (Ref. 114953)
Western Indian Ocean: known only from off the Limpopo River mouth, Mozambique.
西印度洋: 已知只來自林波波河口外,莫三比克了。
大小 / 重量 / 年龄
Maturity: Lm ?  range ? - ? cm
Max length : 82.0 cm TL 雄鱼/尚未辨别雌雄; (Ref. 5578)
简单描述
型态特徵 | 形态测量图
A pale-spotted longnose skate with an elongated, acutely triangular snout, and a very slender tail- as long as body and tapering from base to tip; disc with angular corners and smooth underside except of small denticles on edges and tip of snout; thorns on upper surface of disc and tail conspicuously lighter than surrounding skin; spine at nape (Ref. 5578). Dark grey with numerous small light spots dorsally; grey with black pores ventrally, and with light areas around gills and at front of edge of disc (Ref. 5578).
一个有灰白斑点的长鼻 鱼有一个瘦长的, 锐三角形的吻, 与一非常细长的尾巴与身体等长而尖端细的从基底到顶端; 体盘有棱角与下面平滑的除了小细齿之外在边缘与吻尖上; 在体盘上表面与尾部上的刺显着颜色淡超过周围的皮肤; 在后颈的棘.(参考文献 5578) 深灰色的背面有很多的小淡色的斑点; 灰色的腹地有黑色的孔, 而且与鳃的周围淡色的区域而在体盘的边缘的前面.(参考文献 5578)
Probably taken by offshore trawlers (Ref. 5578). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
可能被外海底拖网捕获。 (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: 已知只來自林波波河口外,莫三比克了。
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
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年龄范围成长体长-体重体长-体长体长-频率形态测量图型态特徵仔鱼稚鱼动力学入添量丰度BRUVS
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Estimates based on models
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): 3.8 ±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): Moderate to high vulnerability (53 of 100).