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Rajella sadowskii (Krefft & Stehmann, 1974)

Brazilian skate
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Image of Rajella sadowskii (Brazilian skate)
Rajella sadowskii
Female picture by Elasmolab Universidad Austral de Chile

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).

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

海洋 深海底的; 深度上下限 800 - 1360 m (Ref. 106604), usually 1200 - ? m (Ref. 27314). 深水域

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

Southeast Pacific: Chile (Ref. 27540). Southwest Atlantic: off Brazil (Ref. 86346).
東南太平洋: 智利.(參考文獻 27540) 西南大西洋: 外海的巴西.(參考文獻 26282)

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 75.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 106604)

生物學特性     字彙 (例如 epibenthic)

Holotype taken from a depth of 1200 m (Ref. 26282). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).

Holotype 取自了深度 1200 公尺。 (參考文獻 26282) 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).東南太平洋: 智利.(參考文獻 27540) 西南大西洋: 外海的巴西.(參考文獻 26282)

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: 09 February 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

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00302 (0.00141 - 0.00645), b=3.24 (3.07 - 3.41), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.7   ±0.5 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 (50 of 100).
Nutrients (Ref. 124155):  Calcium = 7.64 [1.39, 39.72] mg/100g; Iron = 0.339 [0.081, 1.055] mg/100g; Protein = 16.4 [13.6, 19.1] %; Omega3 = 0.543 [0.159, 2.003] g/100g; Selenium = 16.1 [4.1, 52.2] μg/100g; VitaminA = 7.34 [1.81, 30.37] μg/100g; Zinc = 0.373 [0.185, 0.692] mg/100g (wet weight);