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Sebastes polyspinis, Northern rockfish
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Sebastes polyspinis
Picture by
Orlov, A.
Teleostei (teleosts) >
Perciformes/Scorpaenoidei
(Scorpionfishes) >
Sebastidae
(Rockfishes, rockcods and thornyheads) > Sebastinae
Etymology:
Sebastes:
Greek, sebastes = august, venerable (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; demersal; depth range 0 - 740 m (Ref.
50610
). Temperate
North Pacific: eastern Kamchatka to Pervenets Canyon in the Bering Sea and from Stalemate Bank to Graham Island (Queen Charlotte Islands), British Columbia, Canada.
Length at first maturity / Size / Weight / Age
Maturity: L
m
27.7
  range ? - ? cm
Max length : 41.0 cm TL male/unsexed; (Ref.
27437
); max. reported age: 57 years (Ref.
39247
)
Short description
Morphology
|
Morphometrics
Dorsal
spines
(total): 14;
Anal
spines
: 3. Head spines very weak - nasal spines present, preocular, postocular and parietal spines usually present, supraocular, tympanic, coronal and nuchal spines absent (Ref.
27437
). The only rockfish in the eastern Gulf of Alaska with 14 dorsal fin spines; second anal fin spine as long as the 3rd (Ref.
27437
). Top of head convex between eyes (Ref.
27437
). Dark red with gray mottling and orange flecks; lower edge of pectoral fin white (Ref.
27437
).
Found on soft bottoms (Ref.
2850
). Viviparous (Ref.
34817
).
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
)
Not Evaluated
CITES
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
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Zoological Record
Estimates based on models
Preferred temperature (Ref.
123201
): 0.9 - 5.9, mean 3.9 °C (based on 236 cells).
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00499 - 0.02004), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.4 ±0.4 se; based on diet studies.
Resilience (Ref.
120179
): Very Low, minimum population doubling time more than 14 years (K=0.18; tmax=57).
Prior r = 0.06, 95% CL = 0.04 - 0.10, Based on 2 stock assessments.
Fishing Vulnerability (Ref.
59153
): Moderate to high vulnerability (50 of 100).
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Page last modified by :
mrius-barile
- 20 July 2016
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