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) >
Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335); smirnovi: Named for 'Mr. Smirnov', Inspector of Fishes, who collected fishes from the Sea of Okhotsk (Ref. 89865).
Environment: milieu / climate zone / depth range / distribution range
生態学
海 底生の; 深さの範囲 100 - 1000 m. Temperate; - 36°N (Ref. 89865)
North Pacific: Sea of Okhotsk, Kuril Islands, and the Sea of Japan.
サイズ / 重さ / 年齢
Maturity: Lm ?  range ? - ? cm
Max length : 102 cm TL オス/雌雄の選別がない; (Ref. 89865)
簡単な記述
形態学 | 形態計測学
This species is distinguished by the following characters: no blotches on the dorsal disc surface or a pair of white or dark blotches; dark blotch and band usually absent on the ventral disc surface; predorsal caudal vertebrae 80-87 (Ref. 123274)..
Geographical variations are present in the populations of the seas of Japan and Okhotsk: number of total tail thorns, ranging from 21-33 (average and standard deviation: 27.3±2.9) (southern Sea of Japan) vs.19-29 (26.0 ± 2.3) (northern Sea of Japan), vs. 22-27 (24.3 ± 1.5) (Sea of Okhotsk) (P < 0.05) and the frequency distribution of tail thorn numbers was bimodal in the Sea of Japan [modes: 25 and 28,29 (southern); 25,26 and 28 (northern)], but unimodal in the Sea of Okhotsk (mode: 25) (Ref. 123274).
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 12.4-15.0 cm long and 8.7-9.0 cm wide (Ref. 41249, 41253). Depth range given by H. Ishihara (pers.comm. 07/07). Reported to feed primarily on amphipods, decapods, fishes, euphausids, and squid on Yamato Bank in the Sea of Japan. Maximum length reported 116 cm TL (Ref, 89865).
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). Eggs have horn-like projections on the shell (Ref. 205).
Misawa, R., A.M. Orlov, S.Y. Orlova, I.I. Gordeev, H. Ishihara, T. Hamatsu, Y. Ueda, K. Fujiwara, H. Endo and Y. Kai, 2020. Bathyraja (Arctoraja) sexoculata sp. nov., a new softnose skate (Rajiformes: Arhynchobatidae) from Simushir Island, Kuril Islands (western North Pacific), with special reference to geographic variations in Bathyraja (Arctoraja) smirnovi. Zootaxa 4861(4):515-543. (Ref. 123274)
Human uses
より多くの情報
Age/Size成長体長-重さLength-length体長組成形態計測学形態学幼生幼生の動力補充豊度BRUVS
参考文献水産養殖水産養殖の紹介緊張遺伝子のElectrophoreses遺伝病気行列NutrientsMass conversion
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
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インターネットの情報源
Estimates based on models
Preferred temperature (Ref.
123201): 0.6 - 3.8, mean 1.6 °C (based on 122 cells).
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).
栄養段階 (Ref.
69278): 4.0 ±0.7 se; based on size and trophs of closest relatives
回復力 (Ref.
120179): 低い, 4.5年~14年の倍増期間の最小個体群 (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): High vulnerability (61 of 100).