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) >
Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335); interrupta: Name refers to the interrupted row of thorns down the middorsal and tail..
More on authors: Gill & Townsend.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海底的; 深度上下限 23 - 1500 m (Ref. 27436), usually 200 - 500 m (Ref. 126515). 深水域
North Pacific: Bering Sea, Alaska south to British Columbia, Canada.
北太平洋: 到 Cortez 淺堆，美國的南加州的在白令海西部與 Agattu 島 (阿留申群島) 中的外海 Navarin 海岬。
大小 / 重量 / 年齡
Maturity: Lm ? range ? - ? cm
Max length : 89.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 126515)
簡短描述
檢索表 | 型態特徵 | 形態測量圖
This moderately-sized skates (82.5 cm TL) with disc length (47.7-54.0% TL) are distinguished by the following; head length moderate (18.4-21.4% TL), posterior lobe of pelvic fins are long (10.4-23.4% TL); claspers are long and robust, tip rounded and not bulbous, no pseudosiphon, with a weak, but long pseudorhipidion, U-shaped cleft, projection rounded and protrudes from tip, has a very large sentina, sentinel present; teeth in 22-32 rows on upper jaw, teeth in 23-32 rows on lower jaw; total vertebrae 133; dorsal surface covered in small, sandpaper-like prickles; thorns in a non-continuous row, mature males with strong alar thorns, no malar thorns, middorsal thorns strong (1-8), nuchal thorns robust (2-5), tail thorns moderate (18-26), interdorsal thorns weak (0-1). Colouration: dorsal brown to grey, with numerous small dark spots on body; ventral white, often with dark brown blotches on underside of tail (Ref. 126515).
一根單列的堅硬銳利的棘沿著來自關於 1個眼間隔在後眼窩到第一背鰭的點的背部中央線; 在肩肢帶骨上的 1 或 2 大的棘; 在雄性中, 在胸鰭的頂端附近的大銳利的棘的區塊而且延伸到吻沿著鰭的邊緣.(參考文獻 6885) 尾鰭縮得很小; 腹鰭大的與凹槽深的.(參考文獻 6885) 所有的鰭覆蓋著鱗片了。 (參考文獻 6885) 成魚暗藍灰色背面; 稚魚一全灰褐色的有小褐色斑點; 在腹面上的白色; 在尾部的任一側邊上的白色的斑點顯著的在小的個體中.(參考文獻 6885)
Inhabit the outer continental shelf, on mud or sand bottoms (Ref. 27436). Frequently found buried in substrate (Ref. 27436). Feed on benthic invertebrates including euphausiids, crabs, and various shrimps (e.g., pandalids, hippolytids, crangonids) and bony fishes. Reported size at maturity for males is 69-70 cm TL and for females 71-72 cm TL, with a maximum size of at least 89 cm TL (Ref. 126515). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are deposited in sandy or muddy flats (Ref. 205). Egg cases are small (7.8-7.9 cm TL), colour golden brown, covered with small and coarse prickles that form longitudinal rows. The egg cases with lateral keels very wide, horns taper and become thin and filamentous at their ends, with the anterior horn being more robust (Ref. 126515). Although the pectoral fins may be used to prepare a variety of dishes, they are generally considered not saleable, and incidental catches are usually discarded (Ref. 27436). Occasionally used to produce mink feed and fertilizer (Ref. 27436). Minimum depth reported from Ref. 6793.
在泥或砂質底部上, 棲息於大陸棚外緣。 (參考文獻 27436) 時常發現被埋藏在底部之中的。 (參考文獻 27436) 捕食底棲的無脊椎動物與魚類。 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 4.9-5.9 公分長與 4.0-5.0 公分寬的.(參考文獻 41300) 6-9個卵生產每年。 (參考文獻 41300) 雖然胸鰭可能是用來準備多種盤子, 他們通常被認為不是可賣, 與附帶的捕獲通常被丟棄.(參考文獻 27436) 偶然地用來生產貂的飼料與肥料.(參考文獻 27436) 最小深度記錄自了參考文獻 6793.
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 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: 到 Cortez 淺堆，美國的南加州的在白令海西部與 Agattu 島 (阿留申群島) 中的外海 Navarin 海岬。
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)
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Estimates based on models
Preferred temperature (Ref.
123201): 1 - 5.4, mean 2.1 °C (based on 298 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00468 (0.00309 - 0.00707), b=3.05 (2.93 - 3.17), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.4 ±0.46 se; based on food items.
回復力 (Ref.
120179): 非常低的, 最小族群倍增時間超過14 年 (Fec=6).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (68 of 100).
Nutrients (Ref.
124155): Calcium = 6.86 [1.23, 37.25] mg/100g; Iron = 0.31 [0.08, 1.00] mg/100g; Protein = 15.3 [12.7, 17.9] %; Omega3 = 0.488 [0.155, 1.875] g/100g; Selenium = 15.6 [4.2, 49.6] μg/100g; VitaminA = 8.6 [2.0, 38.8] μg/100g; Zinc = 0.38 [0.19, 0.71] mg/100g (wet weight);
