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Sebastidae (Rockfishes, rockcods and thornyheads) > Sebastolobinae
Etymology: Sebastolobus: Greek, sebastes = august, venerable + Greek, lobos = lobe (Ref. 45335); alascanus: Species name after Alaska, the type locality (Ref. 27436). More on author: Bean.
Môi trường / Khí hậu / Phạm vi
Sinh thái học
; Biển gần đáy; Mức độ sâu 17 - 1600 m (Ref. 50550), usually 91 - ? m (Ref. 2850). Temperate, preferred 5°C (Ref. 107945)
North Pacific: Sea of Okhotsk north to the Navarin Canyon in the Bering Sea and from Stalemate Bank and Ulm Plateau in the Aleutian Islands southeast to Cedros Island, Baja California, Mexico. Reported from Japan (Ref. 559).
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm 22.0  range ? - ? cm
Max length : 80.0 cm SL con đực/không giới tính; (Ref. 559); Khối lượng cực đại được công bố: 9.0 kg (Ref. 56527); Tuổi cực đại được báo cáo: 100 các năm (Ref. 90032)
Các tia vây lưng cứng (tổng cộng): 15 - 17; Các vây lưng mềm (tổng cộng): 8-9; Tia cứng vây hậu môn 3; Tia mềm vây hậu môn: 4 - 5. Head spines very strong - nasal, preocular, supraocular, postocular, tympanic, parietal and nuchal spines present, coronal spines absent; large head and elongate body; strong spiny ridge on head; 3rd dorsal spine not much longer than 2nd, 4th or 5th; strong notch on pectoral fin (Ref. 27437). Bright red with some black on fins; gill chamber mostly pale (Ref. 27437). Caudal slightly rounded (Ref. 6885).
Very common on soft bottoms (Ref. 2850). Oviparous (Ref. 205). Eggs are extruded in floating gelatinous masses (Ref. 31279). Have a thick glandular tissue on posterior margin of fin spines which is believed to be venomous (Ref. 57406). Rarely taken by game fishers (Ref. 27436). Flesh sweeter than that of other rockfishes (Ref. 27436).
Unlike other representatives of this group, this species has internal fertilization Oviparous (Ref. 6885). Females possess specialized ovarian structures including stalk-like ovigerous lamellae and secretory epithelia (Ref. 32832).
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)
IUCN Red List Status (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Human uses
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Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00891 (0.00388 - 0.02045), b=3.10 (2.89 - 3.31), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 3.6 ±0.3 se; Based on diet studies.
Thích nghi nhanh (Ref.
69278): Rất thấp, thời gian nhân đôi của chủng quần tối thiểu là hơn 14 năm (tmax> 100 (validated age: 62 yrs); tm= 13; Fec > 10,000).
Prior r = 0.1, 2 SD range = 0.02 - 0.58, log(r) = -2.3, SD log(r) = 0.87, Based on: 1 K, 1 tgen, 1 tmax, 2 Fec records
Vulnerability (Ref.
59153): High to very high vulnerability (70 of 100) .