Lamna nasus, Porbeagle
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Lamna nasus (Bonnaterre, 1788)

Porbeagle
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Lamna nasus   AquaMaps   Data sources: GBIF OBIS
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Elasmobranchii (haaien en roggen) (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);  nasus: Latin for nose, referring to moderately long conical snout. (See ETYFish).
More on author: Bonnaterre.

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

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Size / Gewicht / Leeftijd

Maturity: Lm 186.5, range 170 - 219 cm

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 0; Anale stekels 0; Anale zachte stralen: 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).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Distinct pairing with embrace (Ref. 205). Ovoviviparous (aplacental viviparity), with uterine cannibalism (embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed) (Ref. 43278, 50449). With 1-5 (usually 4) pups in a litter (Ref. 6871, 43278). Reproduction probably yearly (Ref. 45602). In the northeast Atlantic, breeding grounds are off the coast of Europe and the British Isles. Embryos found in mature females throughout the year except from July to September. Mating occurs in late summer, pups are born in the spring of the following year (Ref. 43278). Gestation may last 8-9 months. Size at birth 60-80 cm TL (Ref. 6871, 43278).

Voornaamste referentie Upload your references | Referenties | Coördinator | Medewerkers

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)

Status op de Rode Lijst van het IUCN (Ref. 125652)


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AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Bekijk FishWatcher gegevens | CISTI | Catalog of Fishes: Genus, Soort(en) | DiscoverLife | ECOTOX | FAO - Visserij: landings, soortsprofiel; Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genoom, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Nationale databanken | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: ga naar, zoek | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 3.1 - 16.3, mean 7.8 °C (based on 1486 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7813   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00612 - 0.01792), b=3.03 (2.88 - 3.18), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trophic level (Ref. 69278):  4.6   ±0.0 se; based on diet studies.
Generation time: 9.5 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Weerstandsvermogen (Ref. 120179):  zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (K=0.12; tm=5; tmax=30; Fec=1-5).
Prior r = 0.05, 95% CL = 0.03 - 0.08, Based on 2 stock assessments.
Nutrients (Ref. 124155):  Calcium = 4.03 [0.57, 13.07] mg/100g ; Iron = 0.283 [0.072, 0.726] mg/100g ; Protein = 19.1 [16.9, 21.4] % ; Omega3 = 0.381 [0.167, 0.849] g/100g ; Selenium = 15.8 [4.5, 44.9] μg/100g ; VitaminA = 10.3 [2.7, 43.0] μg/100g ; Zinc = 0.211 [0.103, 0.411] mg/100g (wet weight); based on nutrient studies.