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) >
Rajidae (Skates)
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).
More on author: Whitley.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海底的; 海洋洄游的 (Ref. 51243); 深度上下限 33 - 530 m (Ref. 106604). 9°C - 17°C (Ref. 41312); 44°N - 24°N, 81°W - 69°W
Western Atlantic: southern New England to southern Florida in the USA.
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm ?, range 34 - ? cm
Max length : 57.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 106604)
簡短描述
型態特徵 | 形態測量圖
Rows of spines along back and sides of tail. Tail rather long. Conspicuous dark rosettes on upper surface of disk in young and adults. Axil of pelvic fin to 1st dorsal fin greater than from axil of pelvic fin to eye (Ref. 7251). Upper surface pale buff or brown freckled with small spots, darker or paler. Lower surface white or pale yellow (Ref. 6902).
Occur mostly on outer edge of continental shelf and upper part of continental slope (Ref. 7251). Known salinities at which it has been taken 33.8 off Block Island to 35.3 off Chesapeake bay (Ref. 6902). Feed mostly on decapod crustaceans and to a lesser extent on amphipods, polychaetes, squids and fishes. Oviparous (Ref. 50449). 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 3.7-5.4 cm long and 2.6-3.0 cm wide (Ref. 41301, 41298). Marketed fresh and salted (Ref. 3824).
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 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).
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: 低經濟; 誘餌: occasionally
更多資訊
年龄/大小成長長度-重量長度-長度長度-頻率形態測量圖型態特徵仔魚稚魚動力學入添量豐度BRUVS
參考文獻養殖養殖資訊品種遺傳學Electrophoreses遺傳率疾病加工NutrientsMass conversion
合作者照片Stamps, Coins Misc.聲音神經毒速度泳型鰓區Otoliths腦重體重比眼睛色素
工具
特別的報告
下載 XML
網路資源
Estimates based on models
Preferred temperature (Ref.
123201): 10 - 23.2, mean 18.3 °C (based on 20 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00251 (0.00172 - 0.00367), b=3.17 (3.05 - 3.29), in cm total length, based on LWR estimates for this species & Genus-body shape (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 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Moderate vulnerability (43 of 100).
Nutrients (Ref.
124155): Calcium = 7.79 [0.85, 125.68] mg/100g; Iron = 0.442 [0.039, 5.145] mg/100g; Protein = 16.8 [14.7, 18.9] %; Omega3 = 0.328 [0.129, 0.815] g/100g; Selenium = 15.4 [2.5, 74.0] μg/100g; VitaminA = 43.3 [3.2, 514.0] μg/100g; Zinc = 0.701 [0.049, 8.046] mg/100g (wet weight);