Malacoraja spinacidermis, Soft skate

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Malacoraja spinacidermis (Barnard, 1923)

Soft skate
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Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Malacoraja spinacidermis   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: Malacoraja: Greek, malakos = soft + Latin, raja, -ae = ray, fis (Raja sp.) (Ref. 45335).
More on author: Barnard.

Environment: milieu / climate zone / depth range / distribution range 生態學

; 海洋 深海底的; 深度上下限 450 - 1570 m (Ref. 117245). 深水域; 67°N - 38°S, 72°W - 25°E

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

Eastern Atlantic: Baffin Bay-Davis Strait Offshore to Iceland-Faeroe Ridge, off northwest Africa (Rio de Oro), off southern Namibia and South Africa.
東大西洋: 到冰島-法羅群島的脊,外海的非洲 (里奧德奧羅) 西北部, 外海的那米比亞南部與南非的 Baffin 海灣- 戴維斯海峽外海。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 70.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 4426)

簡短描述 型態特徵 | 形態測量圖

Very broad, almost pentagonal disc, light above and abruptly dark below; snout bluntly pointed with a flexible tip, eyes small and close together, and a disc with broadly rounded rear margins and tips (Ref. 5578). Small juveniles with and adults without thorns and covered only with small denticles (Ref. 5578). Slate-grey or greyish-brown above except rear margins of pectoral and pelvic fins and claspers of adult males which are dark brown; dark brown below, sometimes with light blotches (Ref. 5578). Lack of large thorns on its disc posterior to the scapular region (Ref. 6902).
非常寬又幾乎五角的體盤, 背面顏色較淡與突然下方顏色較深; 吻頓尖的具有一個柔韌有彈性的頂端, 眼小的而且靠攏在一起, 與一體盤有寬廣圓形的後緣與頂端.(參考文獻 5578) 小的稚魚有而且成魚沒有刺而且僅由小的細齒覆蓋著.(參考文獻 5578) 暗藍灰色或灰褐色的上方除胸鰭的後緣,而且雄性成魚的腹鰭與釦緊物那是深褐色的; 腹面深褐色, 有時有淡的斑塊.(參考文獻 5578) 缺乏大的刺在它的體盤在肩胛區域後面.(參考文獻 6902)

生物學特性     字彙 (例如 epibenthic)

A very rare species inhabiting continental slopes and probably down to the abyssal plains (Ref. 3167). Benthic (Ref. 58426). Adults usually at depths greater than 1,500 m while juveniles are mainly taken from about 450 m downward (Ref. 4426). Minimum depth reported taken from Ref. 4426. Feeds on crustaceans (Ref. 58426). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).

一個非常稀有的種居住於大陸斜坡而且可能向下至深海平原.(參考文獻 3167) 底棲的.(參考文獻 58426) 在深度大於成魚通常 1,500 公尺而稚魚主要是取自大約 450 公尺向下的.(參考文獻 4426) 最小深度報告取自參考文獻 4426. 吃甲殼動物。 (參考文獻 58426) 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 成熟度 | 繁殖 | 產卵場 | | 孕卵數 | 仔魚

Oviparous (Ref. 3167). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).東大西洋: 到冰島-法羅群島的脊,外海的非洲 (里奧德奧羅) 西北部, 外海的那米比亞南部與南非的 Baffin 海灣- 戴維斯海峽外海。

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. 125652)

  無危 (LC) ; Date assessed: 20 June 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的





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Estimates based on models

Preferred temperature (Ref. 115969): 3.3 - 8.5, mean 5.9 °C (based on 122 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00142 - 0.00642), b=3.23 (3.06 - 3.40), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.5   ±0.50 se; based on food items.
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 (48 of 100) .
Climate Vulnerability (Ref. 125649):   (0 of 100) .
Nutrients (Ref. 124155):  Calcium = 14.1 [2.5, 45.0] mg/100g ; Iron = 0.328 [0.072, 0.839] mg/100g ; Protein = 15.7 [13.3, 18.1] % ; Omega3 = 0.445 [0.173, 1.313] g/100g ; Selenium = 16.5 [4.6, 50.2] μg/100g ; VitaminA = 6.94 [2.04, 23.89] μg/100g ; Zinc = 0.362 [0.179, 0.773] mg/100g (wet weight);