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Dipturus doutrei (Cadenat, 1960)

Violet skate
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Dipturus doutrei   AquaMaps   Data sources: GBIF OBIS
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drawing shows typical species in Rajidae.

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(, ) | 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 深海底的; 深度上下限 163 - 1200 m (Ref. 11284), usually 450 - 600 m (Ref. 36731). 深水域; 21°N - 37°S, 20°W - 27°E (Ref. 114953)

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Eastern Central Atlantic to Southwest Indian Ocean: off Mauritania to South Africa (east to Cape Province) (Ref. 114953).
東大西洋: 茅利塔尼亞到南非。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 115 cm TL 雄魚/尚未辨別雌雄; (Ref. 114953)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

an all-dark longnose skate with an elongated, acutely triangular snout, and a stout tail - shorter than body and with mid-section swollen sausage-shaped; disc with narrowly rounded outer corners and smooth underside except for small denticles on snout; no thorns on nape or along back (Ref. 5578). Dark brown with irregular dark blotches dorsally; rear end of disc and pelvic fins blackish; underside dark brown with black pores and scattered lighter blotches on disc, at base of pelvic fins, around vent, and on tail (Ref. 5578).
一個全身黑色的長鼻魟魚有一個瘦長的, 銳三角形的吻, 與一矮胖的尾部短於身體而且中段腫大成臘腸形; 狹窄地體盤有圓形的外角與下面平滑的在吻上除了小的細齒; 沒有在後頸上的刺或沿著背面.(參考文獻 5578) 深褐色的有不規則的黑色斑塊背面; 體盤與腹鰭的後端黑色的; 腹面深褐色的在體盤上有黑色的孔與分散的淡色斑塊, 在腹鰭基底,排洩孔周圍, 與在尾部上.(參考文獻 5578)

生物學特性     字彙 (例如 epibenthic)

Occurs in deeper slope waters (Ref. 4426). Feeds on benthic fishes, shrimps and crabs (Ref. 27637, Ref. 114953). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205). Males reaches maturity at ca. 101 cm TL (Ref. 114953).

出現於更深的斜坡水域。 (參考文獻 4426) 吃底棲的魚,蝦與螃蟹。 (參考文獻 27637) 卵生的.(參考文獻 50449) 卵有在貝殼上的像觸角一樣的突出。 (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).東大西洋: 茅利塔尼亞到南非。

主要參考資料 Upload your references | 參考文獻 | 合作者 : McEachran, John | 合作者

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)

IUCN 瀕危狀態 (Ref. 130435)

  無危 (LC) ; Date assessed: 31 August 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





人類使用

漁業: 商業性
FAO - Publication: search | FishSource |

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參考文獻

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Estimates based on models

Preferred temperature (Ref. 123201): 6.3 - 11.8, mean 7.3 °C (based on 17 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 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   ±0.66 se; based on food items.
回復力 (Ref. 120179):  低的, 最小族群倍增時間4.5 - 14 年 (Assuming fecundity<100).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (69 of 100).
價格種類 (Ref. 80766):   Medium.