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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Bathyraja trachura AquaMaps Data sources: GBIF OBIS |
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Bathyraja trachura
拍攝者 Van Orden, W.
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拍攝者 Van Orden, W.
分類 / 名稱 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: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).
More on author: Gilbert.
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).
More on author: Gilbert.
環境： 環境 / 氣候帶 / 深度上下限 / 配送範圍 生態學
海洋 深海底的; 深度上下限 213 - 2550 m (Ref. 80796). 深水域; 63°N - 22°N, 144°E - 106°W
分布 領土 | FAO區域 | 生態系 | 發現紀錄 | 分布圖 | 簡介 | Faunafri
Northeastern Pacific: from the Bering Sea, south to gthe Gulf of California, Mexico, and to the west to the Sea of Okhotsk.
北太平洋: 白令海到墨西哥的下加利福尼亞北部。
北太平洋: 白令海到墨西哥的下加利福尼亞北部。
大小 / 重量 / 年齡
成熟度: Lm ? range ? - ? cm
Max length : 91.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 87722); 89.0 cm TL (female); 最大體重: 5.0 kg (Ref. 87722); 最大年齡: 20 年 (Ref. 87722)
Max length : 91.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 87722); 89.0 cm TL (female); 最大體重: 5.0 kg (Ref. 87722); 最大年齡: 20 年 (Ref. 87722)
簡短描述 檢索表 | 型態特徵 | 形態測量圖
This moderately sized skates (91.0 cm TL) with disc length (28.7-56.7% TL) are distinguished by the following: pectorals broadly rounded, head length short (15.0-24.1% TL), preorbital length short (9.0-13.5% TL) are also distinguished by having the following: claspers short, tips relatively rounded, with large pseudosiphon and a strong, short pseudorhipidion, not reaching the tip, V-shaped cleft, projection absent; teeth in 27-36 rows on upper jaw and in 26-36 rows on lower jaw; pectoral fin radials 81; pelvics 23; total vertebrae 109; dorsal surface is covered with rough prickles, prickles on tail are larger and more robust; thorns on dorsal surface, mature males with alar thorns, no malar thorns, middorsal thorns weak or absent (0-1); nuchal thorns small or obsolete (0-3); tail thorns moderate (21-30); interdorsal thorns are small to occasionally absent (0-1). Colouration: dorsal dark purple, brown, or grey, spiracles occasionally pale, ventral coloration a lighter grey than dorsal surface, often with white blotching on mouth, gills, cloaca, and scattered across the body (Ref. 126515).
Cross section: flattened.
Cross section: flattened.
Inhabits deeper waters than hardnose skates and reported to prefer medium to cold temperatures and low oxygen environments compared to its congeners. It is found over a wide range of substrates, from fine sediment to rocky environments. Feeds mostly on benthic organisms, including annelids, shrimps, crabs, and fishes, with adults preferring fishes, whereas juveniles consume mostly invertebrates (Ref. 126515). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Reported size at maturity for males 74 cm TL and for females 80 cm TL with males growing to at least 90 cm TL and females at least 89 cm TL; with size at birth 9-16 cm TL. Maximum age reported estimated to be 20 years for males and 17 years for females. Egg cases small in size (6.2-7.8 cm TL), colour dark brown and becoming light golden brown on keels, which are smooth and plush-like when touched. Egg cases with long, slender horns at each corner, curving inwardly and slightly overlap at their tips with a distinct crossbar originating midway along the posterior horns in some specimens (Ref. 126515).
卵生的。 明顯的成對出現。 幼魚可能傾向跟隨大的個體, 例如他們的母親.(參考文獻 205) 卵為長方形鞘囊具有僵硬的觸角沈積在沙灘或泥灘的角落.(參考文獻 205) 卵鞘是 7.5 公分長與 6.1 公分寬的.(參考文獻 41249)
卵生的。 明顯的成對出現。 幼魚可能傾向跟隨大的個體, 例如他們的母親.(參考文獻 205) 卵為長方形鞘囊具有僵硬的觸角沈積在沙灘或泥灘的角落.(參考文獻 205) 卵鞘是 7.5 公分長與 6.1 公分寬的.(參考文獻 41249)
生命週期和交配行為 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).北太平洋: 白令海到墨西哥的下加利福尼亞北部。
主要參考資料
上傳您的推薦信 | 參考文獻 | 合作者 : McEachran, John | 合作者
Knuckey, J.D.S. and D.A. Ebert, 2022. A taxonomic revision of Northeast Pacific softnose skates (Rajiformes: Arhynchobatidae: Bathyraja Ishiyama). Zootaxa 5142(1):1-89. (Ref. 126515)
CITES
Not Evaluated
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基於模型的估計
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系統發育多樣性指數 (參考文獻 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
| Bayesian length-weight | a=0.00447 (0.00277 - 0.00721), b=3.05 (2.91 - 3.19), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245). |
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營養階層 (參考文獻 69278) |
4.0 ±0.7 se; based on size and trophs of closest relatives |
| Generation time | 12.2 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies. |
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回復力 (參考文獻 120179) |
低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100). |
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釣魚的脆弱性 (Ref. 59153) |
High vulnerability (57 of 100). 🛈 |
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營養素 (Ref. 124155) |
Calcium = 6.64 [1.31, 32.87] mg/100g; Iron = 0.293 [0.070, 0.933] mg/100g; Protein = 15.7 [13.1, 18.2] %; Omega3 = 0.579 [0.189, 2.290] g/100g; Selenium = 16.2 [4.6, 50.1] μg/100g; VitaminA = 9.31 [2.07, 42.12] μg/100g; Zinc = 0.29 [0.15, 0.54] mg/100g (wet weight); |