分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii
板鰓亞綱 (鯊魚與魟魚) (sharks and rays) >
Rajiformes (Skates and rays)
鰩目 (Skates and rays) >
Rajidae (Skates)
鰩科 (Skates)
Etymology: Dipturus: Greek, di = two + Greek, pteryx = fin (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋; 半鹹淡水 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 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 82.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 5578)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
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).
一個有灰白斑點的長鼻魟魚有一個瘦長的, 銳三角形的吻, 與一非常細長的尾巴與身體等長而尖端細的從基底到頂端; 體盤有稜角與下面平滑的除了小細齒之外在邊緣與吻尖上; 在體盤上表面與尾部上的刺顯著顏色淡超過周圍的皮膚; 在後頸的棘.(參考文獻 5578) 深灰色的背面有很多的小淡色的斑點; 灰色的腹地有黑色的孔, 而且與鰓的周圍淡色的區域而在體盤的邊緣的前面.(參考文獻 5578)
Probably taken by offshore trawlers (Ref. 5578). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
可能被外海底拖網捕獲。 (參考文獻 5578) 卵生的.(參考文獻 50449) 卵在貝殼上有像觸角一樣的突出。 (參考文獻 205)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
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)
人類使用
漁業: 沒有興趣
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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).
營養階層 (Ref.
69278): 3.8 ±0.6 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (53 of 100).
