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) >
Arhynchobatidae (Softnose skates)
Etymology: Rioraja: Latin, rivus = river (in Greek, rheo) + Latin, raja, -ae = ray, fish.
More on authors: Müller & Henle.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 居於水底的; 深度上下限 ? - 130 m (Ref. 26375). 亞熱帶的
Southwest Atlantic: Espírito Santo, Brazil to Argentina.
西南大西洋: 巴西的聖埃斯皮里托到阿根廷。
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 42.5, range 39 - 45.7 cm
Max length : 33.0 cm WD 雄魚/尚未辨別雌雄; (Ref. 26408)
A coastal species found on sand, mud or gravel bottoms (Ref. 26375). Feeds on crustaceans, mollusks and fishes (Ref. 26375). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
一個沿岸魚種發現於沙子，泥或礫石底部了。 (參考文獻 26375) 吃甲殼動物，軟體動物與魚。 (參考文獻 26375) 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).西南大西洋: 巴西的聖埃斯皮里托到阿根廷。
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: 商業性
工具
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網路資源
Estimates based on models
Preferred temperature (Ref.
123201): 10.4 - 22.6, mean 14.8 °C (based on 300 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00490 (0.00309 - 0.00776), b=3.02 (2.89 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
營養階層 (Ref.
69278): 3.6 ±0.0 se; based on diet studies.
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): Moderate to high vulnerability (54 of 100).
Nutrients (Ref.
124155): Calcium = 43 [7, 197] mg/100g; Iron = 0.911 [0.243, 2.649] mg/100g; Protein = 17.3 [14.6, 19.8] %; Omega3 = 0.522 [0.178, 1.883] g/100g; Selenium = 16.5 [4.9, 49.3] μg/100g; VitaminA = 16.8 [6.1, 46.1] μg/100g; Zinc = 0.769 [0.367, 1.401] mg/100g (wet weight);
