Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchi (squali e razze) (sharks and rays) > Lamniformes (Mackerel sharks) > Lamnidae (Mackerel sharks or white shark)
Etymology: Lamna: From the Greek lamia, a large and voracious shark, originally from Lamia in Greek mythology, daughter of King Belos, who revenged the murder of her children by killing the children of others, and who behaved so cruelly that her face turned into a nightmarish mask. (See ETYFish); ditropis: di-, from dis (L.), in two; tropis (Gr.), keel, i.e., double-keeled, referring to the rudder-like projections on either side of tail. (See ETYFish).
More on authors: Hubbs & Follett.

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

marino; oceanodromo (Ref. 51243); distribuzione batimetrica 0 - 650 m (Ref. 50550), usually 0 - 152 m (Ref. 55221). Boreal; 66°N - 22°N, 120°E - 115°W

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

North Pacific: Japan, Korea, and the Sea of Okhotsk to the Bering Sea and southward to southern California, USA (Ref. 247) and Baja California, Mexico (Ref. 9253).

Length at first maturity / Size / Peso / Age

Maturity: L_m ? range ? - 221 cm
Max length : 305 cm TL maschio/sesso non determinato; (Ref. 247); common length : 180 cm TL maschio/sesso non determinato; (Ref. 9988); peso massimo pubblicato: 175.0 kg (Ref. 9988); Età massima riportata: 27 anni (Ref. 119696)

Short description Morfologia | Morfometria

Spine dorsali (totale): 0; Raggi dorsali molli (totale): 0; Spine anali 0; Raggi anali molli: 0. First dorsal fin uniformly dark, no light rear tip; ventral surface of body white with dusky blotches (Ref. 247).

A coastal-littoral and epipelagic shark that prefers boreal to cool temperate waters, from the surface to at least 152 m, and is common in continental offshore waters but range inshore to just off beaches. Occurs singly or in schools or feeding aggregations of several individuals; feeds on fishes (Ref. 247). Seasonally migratory (following food prey) and segregate by age and sex where adults move further north than young (Ref. 58085). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 50449). With up to 4 young in a litter (Ref. 247). Fast swimmer (Ref. 9988). Potentially dangerous but has never or seldom been implicated in human attacks (Ref. 247). Causes considerable damage to commercial catches and gear (Ref. 6885). Utilized fresh, dried or salted, and frozen; fins, hides and livers are also used, with fins having particular value; can be broiled and baked (Ref. 9988). Reported to attain at least 27 years of age and reach maximum depth of at least 792 m (in Ref. 119696).

Life cycle and mating behavior Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve

Exhibit ovoviparity (aplacental viviparity), with embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed (Ref. 50449). Litter size is up to 4 young (Ref. 247). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | Bibliografia | Coordinatore : Compagno, Leonard J.V. | Collaboratori

Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

IUCN Red List Status (Ref. 130435)

Least Concern (LC) ; Date assessed: 06 November 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Traumatogenic

Human uses

Pesca: scarso interesse commerciale; Pesce da pesca sportiva: si

FAO - pesca: species profile; Publication: search | FishSource |

Informazioni ulteriori

Stati
Aree FAO
Ecosystems
Presenze
Introduzioni
Stocks
Ecologia
Dieta
Prede
Consumo di cibo
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Nomi Comuni
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Metabolismo
Predatori
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Riproduzione
Maturità
Deposizione
Spawning aggregation
Fecundity
Uova
Egg development

Age/Size
Accrescimento
Length-weight
Length-length
Length-frequencies
Morfometria
Morfologia
Larve
Dinamica popolazioni larvali
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Abbondanza
BRUVS

Bibliografia
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Collaboratori
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Suoni
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Area branchiale
Otoliths
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Strumenti

Special reports

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Summary page | Point data | Nomi Comuni | Photos

Fonti Internet

Estimates based on models

Preferred temperature (Ref. 123201): 1.7 - 8.7, mean 4.7 °C (based on 832 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.7813 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00933 (0.00405 - 0.02151), b=3.04 (2.84 - 3.24), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.5 ±0.80 se; based on food items.

Generation time: 6.5 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.

Resilienza (Ref. 120179): Molto basso, tempo minimo di raddoppiamento della popolazione più di 14 anni (Fec=4).

Fishing Vulnerability (Ref. 59153): High vulnerability (59 of 100).

Price category (Ref. 80766): Unknown.

Nutrients (Ref. 124155): Calcium = 3.95 [1.03, 23.07] mg/100g; Iron = 0.366 [0.089, 1.235] mg/100g; Protein = 19.5 [17.2, 22.0] %; Omega3 = 0.396 [0.154, 1.000] g/100g; Selenium = 14.3 [3.8, 43.3] μg/100g; VitaminA = 5.42 [1.11, 26.30] μg/100g; Zinc = 0.185 [0.091, 0.353] mg/100g (wet weight);

Lamna ditropis Hubbs & Follett, 1947