Porbeagle (Lamna nasus) fish species and Porbeagle information

Scientific Name
Lamna nasus

Common Name
Porbeagle

Biology
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 indict

Classification

Classified By

Bonnaterre, 1788

Class

Sharks and Rays (Elasmobranchii)

Order

Mackerel sharks (Lamniformes)

Family

Mackerel sharks or white shark (Lamnidae)

Distribution

Region

Circumglobal

Distribution

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).

Range

76°N - 59°S, 180°W - 180°E

Environment

Climate

Temperate

Water Temperature From

2 °C

Water Temperature To

18 °C

Depth From - meters

0 m

Depth To - meters

715 m

Zone

pelagic-oceanic

Environment

Marine; pelagic-oceanic; oceanodromous (Ref. 51243); depth range 0 - 715 m (Ref. 26346)

Trophic Level

4.5 s.e. 0.37 Based on diet studies.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

350 cm

Common Length

244 cm

Phylogenetic Diversity Index

PD50 = 0.7813 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Fisheries: commercial; gamefish: yes

Vulnerability

Very high vulnerability (86 of 100)

Resilience

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

Threat To Humans

Traumatogenic (Ref. 4690)

IUCN Red List Status

Vulnerable (VU) (A2bd+3d+4bd)

Porbeagle (Lamna nasus) fish species and information / pictures of Porbeagle - Lamna nasus

Porbeagle (Lamna nasus) fish species information

Classification

Distribution

Environment

Physical Size and Genetics

Human Uses and Population