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Sebastolobus alascanus Bean, 1890

Shortspine thornyhead
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Sebastolobus alascanus   AquaMaps   Data sources: GBIF OBIS
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Image of Sebastolobus alascanus (Shortspine thornyhead)
Sebastolobus alascanus
Picture by Love, M.

United States (contiguous states) country information

Common names: Channel rockcod, Idiotfish, Idiotfish
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: minor commercial | Ref: Kramer, D.E. and V.M. O'Connell, 1995
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Of considerable importantance to the California trawl fishery; the catch is mainly exported to Japan but small quantities are sold in US markets (Ref. 27437). Also Ref. 4925, 6793, 6885.
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: Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983
National Database:

Common names from other countries

Chancharro alacrán, Шипощек аляскинский, Rocote alacrán, ... more

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

> Perciformes/Scorpaenoidei (Scorpionfishes) > 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.

Environment: milieu / climate zone / depth range / distribution range 生態学

海 底生の; 深さの範囲 17 - 1600 m (Ref. 50550), usually 91 - ? m (Ref. 2850).   Temperate

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

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 / サイズ / 重さ / 年齢

Maturity: Lm 22.0  range ? - ? cm
Max length : 80.0 cm SL オス/雌雄の選別がない; (Ref. 559); 最大公表体重: 9.0 kg (Ref. 56527); 最大記録サイズ: 100 年 (Ref. 90032)

簡単な記述 検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 15 - 17; 背鰭 (合計) : 8 - 9; 肛門の骨: 3; 臀鰭: 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).

生物学     用語集 (例 epibenthic)

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).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

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).

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

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のレッドリストの状況は (Ref. 130435)

  絶滅危惧 (EN) (A2d); Date assessed: 01 January 2000

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Venomous (Ref. 57406)




Human uses

水産業: 少数商業の
FAO(水産業: 代謝; publication : search) | FishSource | 私達の周りの海

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Estimates based on models

Preferred temperature (Ref. 115969): 1.2 - 6.7, mean 3.8 (based on 417 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.6250   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00708 (0.00408 - 0.01228), b=3.16 (3.00 - 3.32), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (Ref. 69278):  3.6   ±0.3 se; based on diet studies.
回復力 (Ref. 120179):  非常に低い, １４年以上の倍増期間の最小個体群 (tmax> 100 (validated age: 62 yrs); tm= 13; Fec > 10,000).
Prior r = 0.03, 95% CL = 0.02 - 0.05, Based on 2 full stock assessments.
Fishing Vulnerability (Ref. 59153):  High vulnerability (59 of 100).
Climate Vulnerability (Ref. 125649):  Moderate vulnerability (38 of 100).
価格帯 (Ref. 80766):   Very high.