Malta country information

Common names: Pixxiplamptu, Pixxiplamtu, Porbeagle shark
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Also Ref. 247.
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/mt.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Lanfranco, G.G., 1996
National Database:

Classificação / Names

Elasmobranchii (tubarões e raias) (sharks and rays) > Lamniformes (Mackerel sharks) > Lamnidae (Mackerel sharks or white shark)
Nomes comuns | Sinónimos | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Акула сельдевая (=акула атлантическая), 鼠鲨, قصف ، لياء، بًنبًك, ... more

Referência principal

Compagno, L.J.V. 1984. (Ref. 247)
Referências | Bibliografia | Coordenador : Compagno, Leonard J.V. | Colaboradores

Tamanho / Peso / Idade

Max length : 350 cm TL macho/indeterminado; (Ref. 4645); common length : 244 cm TL macho/indeterminado; (Ref. 5951); Peso máx. publicado: 230.0 kg (Ref. 40637); Idade máx. registada: 30 anos (Ref. 247)

Length at first maturity
L_m 175.0, range 170 - 180 cm

Ambiente

; marinhas; oceanódromo (Ref. 51243); intervalo de profundidade 0 - 715 m (Ref. 26346)

Clima / Intervalo

Temperate; 1°C - 18°C (Ref. 6871), preferred 17°C (Ref. 107945); 76°N - 59°S, 180°W - 180°E (Ref. 247)

Distribuição

Circumglobal, amphitemperature with centers of distribution in the North Atlantic and temperate water of the southern hemisphere; not in equatorial seas. Appendix III (Mediterranean) of the Bern Convention (2002). Appendix II of the Bonn Convention (2009).
Países | Áreas FAO | Ecossistemas | Ocorrências | Introduções

Descrição breve

Espinhos dorsais (total): 0; Raios dorsais moles (total): 0; Espinhos anais 0; Raios anais moles: 0. A stout, spindle-shaped shark with large black eyes, a sharp, conical snout, long gill slits, and small, smooth-edged, narrow teeth with side cusps (Ref. 5578, 88171). Strong keels on the caudal peduncle, short secondary keels on the caudal base, and a crescentic caudal fin; the insertion of the small second dorsal fin is above the insertion of the anal fin (Ref. 88171). Dark grey dorsally, white ventrally, without blotches (Ref. 6581, 43278); 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. Highly migratory, moves generally along the continental shelves. Specimens tagged off southern England were recaptured in northern Norway (having travelled 2,370 km), Denmark and Spain (Ref. 88752, 88753). The northwest Atlantic stock migrates from Newfoundland, Canada in the winter to Massachusetts in the summer (Ref. 43278, 88754). Trans-Atlantic migrations have also been recorded. One of the most cold-tolerant sharks; in the northwest Atlantic mostly found from 5-10°C (Ref. 88755). Known to temporarily tolerate salinities as low as 10 to follow its prey (Ref. 88740). Found singly and in schools and feeding aggregations (Ref. 247). Feeds on small and medium-sized pelagic schooling species, other sharks, squid (Ref. 5578) and demersal fishes (cod, white hake, red hake, haddock and cusk (Ref. 5951, 43278)). Ovoviviparous species (Ref. 43278, 50449). Females grow larger than males (Ref. 88756). Catch records and studies in the northeast Atlantic show segregation by sex and size (Ref. 56108, 88756, 88757). Parasites include Phyllobothrium dagnallium (found in stomach, intestine and spiral valve) and Dinobothrium sp. (Ref. 5951). 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). Excellent sportfish (Ref. 84357). The flesh of the porbeagle is of good quality and texture and is said to taste like swordfish (Ref. 84357). 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).

Categoria na Lista Vermelha da IUCN (Ref. 115185)

Vulnerável, ver o Livro Vermelho da IUCN (VU) (A2bd+3d+4bd)

Ameaça para o homem

Traumatogenic (Ref. 4690)

Utilização humana

Pescarias: espécies comerciais; peixe desportivo: sim

Mais informação

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Referências
Aquacultura
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Fontes da internet

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.7813 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Nível Trófico (Ref. 69278)
4.6 ±0.0 se; Based on diet studies.

Resiliência (Ref. 69278)
Muito baixo, tempo mínimo de duplicação da população maior que 14 anos (K=0.12; tm=5; tmax=30; Fec=1-5)

Vulnerabilidade (Ref. 59153)
Very high vulnerability (86 of 100)

Categoria de preço (Ref. 80766)
Medium

Lamna nasus (Bonnaterre, 1788)