Lamna nasus (Bonnaterre, 1788)

Porbeagle

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Elasmobranchii \| Lamniformes \| Lamnidae
Synonyms	Squalus nasus, Lamna philippii, Lamna punctata, ... more
Common names	Requin-taupe commun, Marrajo sardinero, Porbeale shark, ... more

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Picture by Reyes, P.

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AquaMaps Data sources: GBIF OBIS

Main reference

Compagno, L.J.V. 1984. (Ref. 247)
Other references | Biblio | Coordinator : Compagno, Leonard J.V. | Collaborators

Size / Weight / Age

Max length : 350 cm TL male/unsexed; (Ref. 4645); common length : 244 cm TL male/unsexed; (Ref. 5951); max. published weight: 230.0 kg (Ref. 40637); max. reported age: 30 years (Ref. 247)

Environment

Pelagic-oceanic; oceanodromous (Ref. 51243); marine; depth range 0 - 715 m (Ref. 26346)

Climate / Range

Temperate; 2°C - 18°C (Ref. 6871); 76°N - 59°S, 180°W - 180°E (Ref. 247)

Circumglobal: In subtropical to temperate waters. Western Atlantic: Newfoundland, Canada to New Jersey USA; possibly southern Brazil to Argentina. Eastern Atlantic: Iceland and western Barents Sea to South Africa, including the Mediterranean. Southwest Pacific: Australia and New Zealand. Southeast Pacific: Chile. Southern Ocean: off South Georgia and the Kerguelen Islands. Indian Ocean (Ref. 6871).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Dorsal spines (total): 0; Anal spines: 0. A stout, spindle-shaped shark with large black eyes, a sharp, conical snout, and small, smooth-edged, narrow teeth with side cusps (Ref. 5578). Dark grey above, white below, without blotches (Ref. 6581); rear tip of 1st dorsal abruptly white (Ref. 5578).

Most abundant on continental offshore fishing banks but also found far from land in ocean basins and occasionally close inshore (Ref. 247). Pelagic, epipelagic or littoral shark; usually found in temperatures below 16°C (Ref. 5951). Found singly and in schools and feeding aggregations (Ref. 247). Feeds on small pelagic schooling species (herring, gaspereau and mackerels (Ref. 5951)), other sharks, squid (Ref. 5578), cod, white hake, red hake, haddock and cusk (Ref. 5951, 43278). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 43278, 50449). Parasites include Phyllobothrium dagnallium (found in stomach, intestine and spiral valve) and Dinobothrium sp. (Ref. 5951). With 1 to 5 pups in a litter (Ref. 247). Regarded as potentially dangerous to people because of its size and activity but has never or very seldom been indicted in an attack on people or boats (Ref. 247). Utilized fresh, dried or salted and frozen for human consumption; for oil and fishmeal; fins for shark-fin soup (Ref. 247). May be pan-fried and broiled (Ref. 9988).


IUCN Red List Status (Ref. 57073)	Threat to humans
Vulnerable (VU) (A2bd+3d+4bd)	Traumatogenic (Ref. 4690)

Human uses
Fisheries: commercial; gamefish: yes


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Summary page \| Point data \| Common names \| Photos

Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Very Low, minimum population doubling time more than 14 years (K=0.12; tm=5; tmax=30; Fec=1-5)


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
Very high vulnerability (86 of 100)	Medium

Entered by Carpenter, Kent E.

Modified by Kesner-Reyes, Kathleen

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Page last modified by : elaxamana, 15 July 2009

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