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Rajiformes (Skates and rays) >
Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335); spinosissima: Name from Latin 'spinosus' meaning thorny, referring to the prickles on both the ventral and dorsal surface..
More on authors: Beebe & Tee-Van.
Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
Biển Tầng đáy biển sâu; Mức độ sâu 800 - 2938 m (Ref. 50610). Deep-water
North Pacific: from the Bering Sea, south to the Galapagos Islands and Costa Rica.
Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm ?  range ? - ? cm
Max length : 200 cm TL con đực/không giới tính; (Ref. 126515)
Short description
Hình thái học | Sinh trắc học
This large skates (200.3 cm TL), with large disc length and width (44.1-56.9 and 50.6-67.3% TL, respectively) are distinguished by the following: pectorals with rounded apices; head moderately long (14.0-20.5 % TL), interspiracular length large (9.1-12.2% TL), mouth width large (6.1-13.0% TL); teeth in 31-33 rows on upper jaw and in 24-31 rows on lower jaw; total vertebrae 137; dorsal and ventral surfaces are covered with prickles; thorns usually absent on dorsal surface, with tail thorns (22-28), interdorsal thorns weakly developed or absent (0-1), no middorsal, nuchal, and scapular thorns. Colouration: dorsal pale white to grey, while ventral is pale white; outer edges of pectorals dark (Ref. 126515).
Found in deep waters to almost 3,000 m, making it one of the deepest dwelling skates; prefer cold temperatures compared to its congeners. Feeds on deep-water benthic fishes. Size at maturity for males is unknown, for female specimens, size at maturity at 98 cm TL; with size at birth 25 cm TL. Egg cases are large compared to its congeners (9.2 cm TL); colour plum brown and longitudinally weakly striated, with both surfaces of the case plush-like to the touch. Horns with posterior ones curve inwards and with narrow at tips (Ref. 126515).
Life cycle and mating behavior
Chín muồi sinh dục | Sự tái sinh sản | Đẻ trứng | Các trứng | Sự sinh sản | Ấu trùng
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
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)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
Các nghề cá: không ích lợi (thú vị)
Thêm thông tin
Age/SizeSự sinh trưởngLength-weightLength-lengthLength-frequenciesSinh trắc họcHình thái họcẤu trùngSự biến động ấu trùngBổ xungSự phong phúBRUVS
Các tài liệu tham khảoNuôi trồng thủy sảnTổng quan nuôi trồng thủy sảnCác giốngDi truyềnElectrophoresesDi sảnCác bệnhChế biếnNutrientsMass conversion
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Estimates based on models
Preferred temperature (Ref.
123201): 1.6 - 2.1, mean 1.8 °C (based on 438 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).
Mức dinh dưỡng (Ref.
69278): 4.2 ±0.8 se; based on size and trophs of closest relatives
Thích nghi nhanh (Ref.
120179): thấp, thời gian nhân đôi của chủng quần tối thiểu là 4.5 - 14 năm (Fec assumed to be <100).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).