Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
marina pelagic-neritic; havsvandrande (Ref. 51243); djupintervall 0 - 18 m (Ref. 2850). Temperate; 58°N - 24°N, 155°W - 111°W
Eastern Pacific: Alaska to Magdalena Bay, Baja California. Not common north of Point Conception (Ref. 11484).
Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 145 cm FL hane/ej könsbestämd; (Ref. 40637); publicerad maxvikt: 12.0 kg (Ref. 40637); rapporterad maxålder: 12 år (Ref. 56049)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 6; Mjukstrålar i ryggfenan (totalt) : 9 - 10; Taggstrålar i analfenan: 1; Mjukstrålar i analfenan: 8 - 9. Color bluish or brownish dorsally, silvery ventrally (Ref. 6885).
Body shape (shape guide): elongated.
Usually near shore or near the surface (Ref. 2850). Often in small schools (Ref. 2850). Young enter bays (Ref. 2850). Feed mainly on other fishes (Ref. 2850). Pelagic spawners (Ref. 56049). Migrate south from the California coast during autumn, but may remain in front of the Mexican coast throughout the year (Ref. 9345). Utilized fresh, dried or salted and frozen; eaten broiled and baked (Ref. 9988). Considered as potentially dangerous due to its large, sharp teeth and aggressive disposition, though there are no reports of attacks (Ref. 9988).
Pelagic spawner (Ref. 56049).
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Traumatogenic (Ref. 13513)
Mänskliga användningsområden
Fiskeri: kommersiell; sportfisk: ja
Verktyg
Särskilda rapporter
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00708 (0.00333 - 0.01504), b=2.92 (2.75 - 3.09), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Trofisk nivå (Ref. 69278) |
4.5 ±0.80 se; based on food items. |
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Generation time |
7.9 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies. |
Resiliens (Ref. 120179) |
Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (K=0.14; tm=2-3; tmax=12; Fec=42,000). |
Sårbarhet i fisket (Ref. 59153) |
High to very high vulnerability (69 of 100). 🛈 |
Priskategori (Ref. 80766) |
Medium.
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