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: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).
More on author: Mitchill.
Environment: milieu / climate zone / depth range / distribution range
生態学
海 底生の; 海洋回遊性 (Ref. 51243); 深さの範囲 10 - 914 m (Ref. 106604). Temperate; 49°N - 33°N, 78°W - 59°W (Ref. 55277)
Western Atlantic: southern Gulf of St. Lawrence and Nova Scotia in Canada to North Carolina, USA.
Length at first maturity / サイズ / 重さ / 年齢
Maturity: Lm 37.5, range 32 - 43 cm
Max length : 62.0 cm TL オス/雌雄の選別がない; (Ref. 106604); 最大記録サイズ: 12 年 (Ref. 88929)
Usually on sandy or gravelly bottoms from shoal waters to 90 m depth (Ref. 7251), with temperature range of 1.2-21°C. Benthic (Ref. 5951). Mostly inactive during daylight, but active under dark conditions (Ref. 10807). Feeds on bottom-dwelling organisms such as crabs, shrimps, polychaetes, sea squirts, mollusks, squids and bony fishes (Ref. 27549). 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 4.6-6.3 cm long and 2.7-4.8 cm wide, about 10-35 eggs are laid annually (Ref. 41250). Possesses an electric organ located in the tail region (Ref. 10807). Electric organ discharge (EOD) activity is intermittent (Ref. 10011) and seemed more frequent during dark periods (Ref. 10808). The individual EOD of this species is monophasic, head-negative, and lasts 70 ms (Ref. 10011).
Life cycle and mating behavior
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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)
Human uses
より多くの情報
協力者画像Stamps, Coins Misc.音シガテラ（食中毒の名前）速度泳ぐ 型式カマOtoliths脳視覚
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): 3.3 - 11.9, mean 6.8 °C (based on 97 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00282 (0.00248 - 0.00320), b=3.22 (3.18 - 3.26), in cm total length, based on LWR estimates for this species (Ref.
93245).
栄養段階 (Ref.
69278): 3.6 ±0.1 se; based on diet studies.
回復力 (Ref.
120179): 低い, ４．５年～１４年の倍増期間の最小個体群 (K=0.29-0.35; tm=4.5; Fec=10; tmax=12).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (50 of 100).
Climate Vulnerability (Ref.
125649): Very high vulnerability (90 of 100).
Nutrients (Ref.
124155): Calcium = 8.66 [1.21, 152.16] mg/100g; Iron = 0.286 [0.027, 3.412] mg/100g; Protein = 15.9 [13.9, 17.9] %; Omega3 = 0.79 [0.34, 1.99] g/100g; Selenium = 11.9 [2.5, 63.8] μg/100g; VitaminA = 6.64 [0.51, 72.57] μg/100g; Zinc = 0.394 [0.028, 4.300] mg/100g (wet weight);
