United States (contiguous states) country information

Common names: Dusky rockfish
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Range extends up to the central part of the country with the recently collected specimen (UW 46575). Earlier record by Schultz (1936) and Alverson and Welander (1952) from Washinglon at Neah Bay was reidentified as Sebastes entomelas by Westrheim (1968). It has been observed that off SE Alaska, a high percentage of females captured by trawl surveys during early April were releasing larvae, indicating that parturition occurs in the springl; and during July in shallower waters of about 40 m, all specimens collected were immature (Ref. 53613).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/us.html
National Fisheries Authority: http://www.nmfs.gov
Occurrences: Occurrences Point map
Main Ref: Orr, J.W. and J.E. Blackburn, 2004
National Database:

Common names from other countries

Dusky rockfish, ... more

التصنيف / Names الأسماء الشائعة | مرادفات | Catalog of Fishes(جنس, الانواع) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Scorpaenoidei (Scorpionfishes) > Sebastidae (Rockfishes, rockcods and thornyheads) > Sebastinae
Etymology: Sebastes: Greek, sebastes = august, venerable (Ref. 45335); variabilis: Name is presumed to be referring to the wide range of body color of the species..
More on author: Pallas.

Environment: milieu / climate zone / depth range / distribution range البيئة

بحري القاع; نطاق العمق 6 - 675 m (Ref. 53613), usually 100 - 300 m (Ref. 53613). Subtropical

التوزيع دول | مناطق الفاو | النظام البيئي | الظهور | Point map | مقدمة | Faunafri

North Pacific: Japan, east coast of Kamchatka to Cape Ol'utorskii in western Bering Sea, along the Aleutian Islands to 60°N in the eastern Bering Sea, through the Gulf of Alaska south to Johnstone Strait, British Columbia and to central Oregon.

Length at first maturity / الحجم / وزن / العمر

Maturity: L_m 36.5 range ? - ? cm
Max length : 43.1 cm SL ذكر/ مختلط الجنس; (Ref. 53613); العمر: 50 سنين (Ref. 93327)

وصف مختصر مفاتيح التعريف | الوصف الخارجي | قياسات المظهر الخارجي

الأشواك الظهرية (المجموع) : 13 - 14; الأشعة الظهرية الناعمة (المجموع) : 13 - 16; شوكة شرجية: 3; أشعه شرجية لينه: 7 - 9; فقرات: 28 - 29. This species is distinguished by the following characters: body light yellow to greenish brown to gray, typically greenish brown, with orange flecks present on sides, distinctly light ventrally above anal-fin base and on ventral pectoral-fin rays; peritoneum light gray to jet black; strong symphyseal knob; extrinsic swimbladder muscle with a single section of striated muscle, lacking anterior fascia, otherwise of type I (a-z) of Hallacher (1974); lateral-line pores 43-54, scales 47-63; pectoral-fin rays 16-19; anal-fin rays 7-9; dorsal-fin rays 13-16; vertebrae total 28-29 (11-12 + 16-18) (Ref. 53613).

Collection depth between 6-370 m, deepest recorded depth at 675 m. Large adults common along the edge of the continental shelf at 100-300 m where the species is targeted for commercial use. Captured in the offshore trawl fishery. Males and females captured by trawl surveys vary widely in maturity during the summer (May-July) (Ref. 53613).

Life cycle and mating behavior Maturities | التكاثر | Spawnings | Egg(s) | Fecundities | Larvae

المرجع الرئيسي Upload your references | مراجع | المنظم | المتعاونين

Orr, J.W. and J.E. Blackburn, 2004. The dusky rockfishes (Teleostei: Scorpaeniformes) of the North Pacific Ocean: resurrection of Sebastes variabilis (Pallas, 1814) and a redescription of Sebastes ciliatus (Tilesius, 1813). Fish. Bull. 102:328-348. (Ref. 53613)

IUCN Red List Status (Ref. 130435)

غير موقييم

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

خطر للأنسان

Harmless

استخدامات بشرية

مصائد: تجاري

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Trophic ecology
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Life cycle
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مصادر علي الأنترنت

Estimates based on models

Preferred temperature (Ref. 115969): 0.5 - 6.2, mean 3.2 (based on 368 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00977 (0.00587 - 0.01627), b=3.08 (2.94 - 3.22), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

مستوى غذائي (Ref. 69278): 3.7 ±0.5 se; based on size and trophs of closest relatives

المرونه (Ref. 120179): منخفظ جدا, الحد الزمني الأدني لتضاعف عدد أفراد المجتمع أكثر من 14 سنة (K=0.2; tm=9.2; tmax=50).

Prior r = 0.19, 95% CL = 0.13 - 0.29, Based on 2 full stock assessments.

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (41 of 100).

Sebastes variabilis (Pallas, 1814)