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); pseudoisotrachys: In as much as this species has been currently been misidentified as B. isotrachys, the Greek prefix pseudo (=false) is added to the species name isotrachys (Ref. 6797).
Issue
The species is a synonym of Bathyraja bergi Dolganov 1985 according to Sheiko & Fedorov (2000) and Weigmann 2016
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋 深海底的; 深度上下限 ? - 297 m (Ref. 6797). 深水域
Northwest Pacific: Japan. Not in Compagno's 1999 checklist (Ref. 35766).
西北太平洋: 日本。 不在 Compagno's 1999 名錄中.(參考文獻 35766)
大小 / 重量 / 年齡
Maturity: Lm ?  range ? - ? cm
Max length : 100.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 6797)
The paratype was collected from depth of 287 m (Ref. 6797). Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
副模式被採集自 287 公尺的深度。 (參考文獻 6797) 卵生的.(參考文獻 50449) 卵在貝殼上有像觸角一樣的突出。 (參考文獻 205)
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). Eggs have horn-like projections on the shell (Ref. 205).西北太平洋: 日本。 不在 Compagno's 1999 名錄中.(參考文獻 35766)
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)
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00513 (0.00253 - 0.01042), b=3.12 (2.95 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
營養階層 (Ref.
69278): 4.0 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): High vulnerability (60 of 100).