分類 / Names
共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
板鰓亜鋼(サメとエイ類) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Beringraja: Named for the Bering Sea, though to be the origin of the two species in this genus; binoculata: From the Latin 'bi' meaning two and 'oculata' meaning eyed - referring to the arrangement of pigment on the pectoral fin bases (Ref. 6885).
More on author: Girard.
Environment: milieu / climate zone / depth range / distribution range
生態学
海 底生の; 深さの範囲 3 - 800 m (Ref. 6793), usually 3 - 110 m (Ref. 2850). Temperate; 61°N - 31°N, 165°W - 117°W (Ref. 55279)
North Pacific: Glubokaya Bay, Cape Navarin, and Stalemate Bank to Cedros Island, Baja California, Mexico.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm ?, range 130 - ? cm
Max length : 244 cm TL オス/雌雄の選別がない; (Ref. 2850); common length : 180 cm TL オス/雌雄の選別がない; (Ref. 2850); 最大公表体重: 91.0 kg (Ref. 2850)
背面の脊椎 (合計) : 0; 肛門の骨: 0. Dorsal fins well back on tail, small; caudal and anal fins absent; pectorals broad, attached to snout and incorporated with body; pelvic fins large, moderately concave on free margins (Ref. 6885). Posterior sides of tail with a small fleshy keel on either side (Ref. 6885).
Largest skate in North America (Ref. 2850). Feed on crustaceans and fishes (Ref. 6885). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Young hatch at 18-23 cm TL (Ref. 114953). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 22.8-30.5 cm long and 11.0-19.4 cm wide (Ref. 41249, 41300, 41357). Pectoral fins utilized for human consumption (Ref. 2850). Marketed fresh and frozen; eaten fried and baked (Ref. 9988).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Up to 7 embryos per egg case (Ref. 2850). 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)
IUCNのレッドリストの状況は (Ref. 130435: Version 2024-1)
Human uses
水産業: 商業; 水族館・水槽: 公共の水族館
用具
特記事項
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インターネットの情報源
Estimates based on models
Preferred temperature (Ref.
123201): 3.4 - 10.8, mean 6.8 °C (based on 512 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5156 [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).
栄養段階 (Ref.
69278): 3.9 ±0.64 se; based on food items.
回復力 (Ref.
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 2.86 [0.39, 50.14] mg/100g; Iron = 0.195 [0.018, 2.275] mg/100g; Protein = 15.8 [14.0, 17.7] %; Omega3 = 0.665 [0.306, 1.433] g/100g; Selenium = 23.6 [8.8, 95.7] μg/100g; VitaminA = 3.53 [0.27, 43.61] μg/100g; Zinc = 0.277 [0.018, 3.087] mg/100g (wet weight); based on
nutrient studies.
