Environment: milieu / climate zone / depth range / distribution range
البيئة
بحري قاعية المعيشة; نطاق العمق 0 - 825 m (Ref. 6793), usually 165 - 293 m (Ref. 27437). Deep-water; 64°N - 24°N, 143°E - 110°W (Ref. 54884)
North Pacific: Honshu, Japan to Cape Navarin in the Bering Sea (but not in the Sea of Okhotsk) and La Jolla, California, and along the Aleutians from Stalemate Bank and Bowers Bank to the Alaska Peninsula. Stocks have suffered severe population decline due to overfishing (Ref. 27437).
Length at first maturity / الحجم / وزن / العمر
Maturity: Lm 33.2, range 25 - 43.3 cm
Max length : 53.0 cm TL ذكر/ مختلط الجنس; (Ref. 56527); أعلا وزن تم نشرة: 2.1 kg (Ref. 56527); العمر: 103 سنين (Ref. 93933)
الأشواك الظهرية (المجموع) : 13; الأشعة الظهرية الناعمة (المجموع) : 14 - 17; شوكة شرجية: 3; أشعه شرجية لينه: 6 - 9; فقرات: 26. Head spines weak - nasal, preocular, supraocular (may be absent), postocular, tympanic, parietal, and nuchal (may be absent) spines present, coronal spine absent (Ref. 27437). Long lower jaw with prominent forward directed symphyseal knob (Ref. 27437). Posterior margin of caudal indented (Ref. 6885). Bright to light red, usually with dark markings dorsally, may have some dark stippling on sides and dark blotch on caudal peduncle (Ref. 27437).
Abundant in offshore waters (Ref. 2850). Young pelagic up to age 3 (Ref. 6885). Grows slowly (Ref. 2850). Viviparous (Ref. 34817). Very important commercial rockfish in the North Pacific (Ref. 2850, 27437). Marketed as fillets (Ref. 2850). Utilized fresh and frozen; eaten fried, microwaved and baked (Ref. 9988).
Produces young in small numbers, only about 300,000 when the fish is 20 years old.
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. 130435)
استخدامات بشرية
مصائد: ذو قيمة تاجرية عالية; لعبة سمكه: نعم
أدوات
تقارير خاصة
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مصادر علي الأنترنت
Estimates based on models
Preferred temperature (Ref.
123201): 1.1 - 6.4, mean 3.8 °C (based on 124 cells).
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00779 - 0.01118), b=3.09 (3.05 - 3.13), in cm total length, based on LWR estimates for this species (Ref.
93245).
مستوى غذائي (Ref.
69278): 3.5 ±0.3 se; based on diet studies.
Generation time: 8.3 (7.8 - 10.4) years. Estimated as median ln(3)/K based on 33
growth studies.
المرونه (Ref.
120179): منخفظ جدا, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أكثر من 14 سنة (Musick et al. 2000 (Ref.
36717); tmax=103; tm=7; K=0.1; Fec=31,000).
Prior r = 0.20, 95% CL = 0.13 - 0.29, Based on 8 full stock assessments.
Fishing Vulnerability (Ref.
59153): High vulnerability (59 of 100).
Climate Vulnerability (Ref.
125649): Moderate vulnerability (38 of 100).
Nutrients (Ref.
124155): Calcium = 17.4 [6.4, 61.2] mg/100g; Iron = 0.305 [0.125, 0.808] mg/100g; Protein = 17.2 [16.0, 18.5] %; Omega3 = 0.7 [0.3, 1.8] g/100g; Selenium = 44.5 [15.6, 134.0] μg/100g; VitaminA = 16.3 [3.9, 72.7] μg/100g; Zinc = 0.3 [0.2, 0.6] mg/100g (wet weight);
