個人による観察記録の追加 Fish Watcher
| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Leucoraja ocellata AquaMaps Data sources: GBIF OBIS |
分類 / 名前 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.
Etymology: Leucoraja: Greek, leykos = white + Latin, raja = a fish, Raja sp. (Ref. 45335).
More on author: Mitchill.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
海 底生の; 海洋回遊性 (Ref. 51243); 深さの範囲 4 - 723 m (Ref. 106604). Temperate; 60°N - 34°N, 79°W - 43°W (Ref. 55278)
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
Western Atlantic: Newfoundland Banks and southern Gulf of St. Lawrence in Canada to North Carolina, USA.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 74.5, range 73 - 76 cm
Max length : 150 cm TL オス/雌雄の選別がない; (Ref. 106604); 最大記録サイズ: 21 年 (Ref. 52109)
Max length : 150 cm TL オス/雌雄の選別がない; (Ref. 106604); 最大記録サイズ: 21 年 (Ref. 52109)
簡単な記述 検索表 | 形態学 | 形態計測学
Disk rounded, with many small dark spots on upper surface. Usually 1-4 ocelli on upper surface on each side of disk, each with a dark brownish center and pale edge. Young have long middorsal row of large spines on disk and tail. Upper jaw has 72 rows of teeth (Ref. 7251). Lower surface usually white but marked with irregular pale brownish blotches (Ref. 6902).
Body shape (shape guide): other.
Body shape (shape guide): other.
Prefer sandy and gravelly bottoms in shoal water in the north range; to at least 90 m in south (Ref. 7251). Benthic (Ref. 5951). Much larger specimens (than 113 cm) of up to 150 cm were captured by the Fisheries Research Board of Canada off central and northern Nova Scotia from 1960 to 1971 (Ref. 131089). Those caught at Cans, Nova Scotia in Canada were found to have eaten dollarfish, cunner, and squid. Mostly inactive during daylight hours, but active under dark conditions (Ref. 10807). 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 5.5-9.9 cm long and 3.5-5.3 cm wide (Ref. 41249, 7135, 71301).
Electric organ discharge (EOD) activity seemed more frequent during dark periods (Ref. 10808). The individual EOD of this species is monophasic, head-negative, and lasts 217 ms (Ref. 10011). This species is used only for the manufacture of fish meal.
ライフサイクルと交尾行動 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).
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター : McEachran, John | 協力者
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のレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
絶滅危惧 (EN) (A2bd); Date assessed: 19 June 2019
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
水産業: 少数商業の
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インターネットの情報源
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モデルに基づく推定値
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系統多様性指数 (参照 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00263 (0.00232 - 0.00299), b=3.23 (3.19 - 3.27), in cm total length, based on LWR estimates for this species (Ref. 93245). |
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栄養段階 (参照 69278) |
4.4 ±0.5 se; based on diet studies. |
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回復力 (参照 120179) |
非常に低い, １４年以上の倍増期間の最小個体群 (tmax=20.8; tm=11-12; Fec assumed to be <100). |
| Rate of population increase | Prior r = 0.04, 95% CL = 0.02 - 0.05, Based on 1 full stock assessment. |
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漁業の脆弱性 (Ref. 59153) |
High vulnerability (64 of 100). 🛈 |
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価格帯 (Ref. 80766) |
Medium. |
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栄養素 (Ref. 124155) |
Calcium = 10.8 [2.1, 52.6] mg/100g; Iron = 0.305 [0.081, 0.865] mg/100g; Protein = 17.6 [14.8, 20.3] %; Omega3 = 0.877 [0.282, 3.251] g/100g; Selenium = 10.7 [2.7, 33.9] μg/100g; VitaminA = 13.1 [4.1, 41.9] μg/100g; Zinc = 0.315 [0.151, 0.571] mg/100g (wet weight); |