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Rajella leoparda (von Bonde & Swart, 1923)

Leopard 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.
Rajella leoparda   AquaMaps   Data sources: GBIF OBIS
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Image of Rajella leoparda (Leopard skate)
Rajella leoparda
Picture by Le Noury, P.

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: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).

Issue
Specific name amended to R. leoparda in accordance with ICZN Article 34.2 by Weigmann et al., 2014 (Ref.96993).

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

海洋 深海底的; 深度上下限 130 - 1920 m (Ref. 106604). 深水域; - 36°S

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

Eastern Atlantic: off eastern and western South Africa to off Mauritania
東大西洋: 那米比亞外海與南非記錄呈點狀分佈塞內加爾外海與幾內亞的柯那克里與向北遠至茅利塔尼亞。 可能散佈於西非斜坡水域。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 95.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 106604)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

Large skate with a moderately long snout, small eyes, and a flat disc; tail about as long as body; small inconspicuous, light thorns on upper surface including snout (Ref. 5578). Medium grey to brownish dorsally, often with dark spots; white or mottled with dusky patches ventrally (Ref. 5578).
大的魟魚具有一個中等長度的吻,小的眼 , 與一個平坦的體盤; 尾部大約與身體一樣長; 在上表皮包括吻上的小的不明顯又淡的刺.(參考文獻 5578) 中等的灰色到褐色的背面, 時常有深色的斑點; 白色的或腹地具有暗色的區塊色斑.(參考文獻 5578)

生物學特性     字彙 (例如 epibenthic)

Found in deeper shelf and slope waters (Ref. 4426). Feed on bottom crustaceans, dragonets, rattails, hake, lanternfish, sea pens, cuttlefish and polychaete worms (Ref. 5578). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 7.4 cm long and 7.4 cm wide (Ref. 41249). Caught by hake trawlers (Ref. 5578).

發現於較深的大陸棚及大陸斜坡水域了。 (參考文獻 4426) 捕食底部甲殼動物,鼠魚,鼠尾魚,鱈魚,燈籠魚,海洋鋼筆,墨魚與多毛類的蠕蟲。 (參考文獻 5578) 卵生的。 明顯的成對出現。 幼魚可能傾向跟隨大的個體, 例如他們的母親.(參考文獻 205) 卵為長方形鞘囊具有僵硬的觸角沈積在沙灘或泥灘的角落.(參考文獻 205) 卵鞘是 7.4 公分長與 7.4 公分寬的.(參考文獻 41249) 被鱈魚底拖網捕獲了。 (參考文獻 5578)

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). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).東大西洋: 那米比亞外海與南非記錄呈點狀分佈塞內加爾外海與幾內亞的柯那克里與向北遠至茅利塔尼亞。 可能散佈於西非斜坡水域。

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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Estimates based on models

Preferred temperature (Ref. 123201): 4.1 - 11.9, mean 6.9 °C (based on 47 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00309 (0.00191 - 0.00501), b=3.33 (3.20 - 3.46), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
營養階層 (Ref. 69278):  3.9   ±0.63 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):  High vulnerability (58 of 100).
價格種類 (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 9.71 [1.80, 49.75] mg/100g; Iron = 0.404 [0.092, 1.262] mg/100g; Protein = 16.5 [13.7, 19.1] %; Omega3 = 0.644 [0.200, 2.420] g/100g; Selenium = 14.5 [3.8, 46.2] μg/100g; VitaminA = 13 [3, 56] μg/100g; Zinc = 0.299 [0.147, 0.566] mg/100g (wet weight);