Alopias pelagicus, Pelagic thresher : fisheries, gamefish

Alopias pelagicus Nakamura, 1935

Pelagic thresher
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Alopias pelagicus   AquaMaps   Data sources: GBIF OBIS
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Image of Alopias pelagicus (Pelagic thresher)
Alopias pelagicus
Afbeelding van Cox, C.D.

Classificatie / Namen Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Lamniformes (Mackerel sharks) > Alopiidae (Thresher sharks)
Etymology: Alopias: From alopex, Greek for fox, referring to the ancient vernacular “fox shark,” from its supposed cunning (ancients believed that when it took a bait, it swallowed the hook until it got to the cord, which it bit off and so escaped) (See ETYFish)pelagicus: Pelagic, (from pelagos, Greek for sea), referring to its “living in the upper layer of the sea,” in contrast to A. profundus [=superciliosus], which Nakamura believed dwelled on the “sea-bottom”) (See ETYFish).

Milieu: milieu / Klimaatzone / Diepte / verspreidingsgebied Ecologie

marien pelagic-oceanic; oceanodroom (Ref. 87829); diepte 0 - 300 m (Ref. 106604), usually 0 - 150 m (Ref. 55167). Tropical; 40°N - 42°S, 16°E - 70°W (Ref. 54277)

Verspreiding Gebieden | FAO regio's | Ecosystemen | Voorkomen | Verspreidingskaart | Introducties | Faunafri

Circumglobal. Indo-Pacific: Red Sea, Arabian Sea, Maldives (Ref. 30829), Somalia, South Africa, Western Australia, China, Taiwan, Japan, New Caledonia, Hawaiian Islands and Tahiti. Eastern Pacific: Gulf of California and the Galapagos. Reliable records lacking partly due to its confusion with Alopias vulpinus.

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturiteit: Lm 287.0, range 260 - 292 cm
Max length : 428 cm TL mannelijk / geslacht onbekend; (Ref. 106604); 383.0 cm TL (female); common length : 276 cm TL mannelijk / geslacht onbekend; (Ref. ); max. gerapporteerde leeftijd: 29 Jaren (Ref. 48844)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 0; Anale stekels: 0. A small thresher with moderately large eyes, a broadly convex forehead, a very narrow caudal tip, and straight, broad-tipped pectoral fins (Ref. 5578). Upper lobe of caudal fin very long and strap-like, almost equal to length of rest of shark; lower lobe short but strong; terminal lobe very small (Ref. 13570). Dark blue on back and sides, underside white; no white patch over pectoral fin bases (Ref. 5578).
Body shape (shape guide): fusiform / normal.

Biologie     Verklarende woordenlijst (bv. epibenthic)

Primarily an oceanic species but sometimes close inshore (Ref. 247, 5578, 58302); neritic to oceanic, 0-152 m (Ref. 11230). Epipelagic (Ref. 58302). Mesopelagic in the tropics; may enter atoll lagoons (Ref. 37816). Stuns its prey with its tail, presumably feeding on small fishes and cephalopods (Ref. 6871). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 43278, 50449). Sometimes caught by ski-boat anglers (Ref. 5578). Utilized for human consumption, liver oil for vitamin extraction, hides for leather, and fins for shark-fin soup (Ref. 13570). A very common catch in the tuna and shark longline, and tuna drift net fisheries (Ref.58048). Maximum and common size of males estimated from discussion in Ref. 247. Adult females may reach at least 330 cm TL (Ref. 47613).

Levenscyclus en paargedrag Maturiteit | Voortplanting | Paaien | Eieren | Fecunditeit | Larven

Exhibit ovoviparity (aplacental viviparity), with embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed (Ref. 50449, 42326). Usually with at least two young (Ref. 6871). Size at birth about 100 cm (Ref. 6871); 130-160 cm TL (Ref. 58048). Distinct pairing with embrace (Ref. 205).

Hoofdreferentie Upload uw referenties | Referenties | Coördinator : Compagno, Leonard J.V. | 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. 130435: Version 2025-2 (Global))

  Bedreigd (EN) (A2bd); Date assessed: 06 November 2018

CITES


Gevaar voor de mens

  Harmless (Ref. 13570)





Gebruik door de mens

Visserij: commercieel; sportvis: ja
FAO - visserij: soortsprofiel, landings search; Publication: search | FishSource | Sea Around Us

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Schattingen op basis van modellen

Fylogenetische diversiteitsindex
(Ref. 82804)
PD50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight a=0.01047 (0.00410 - 0.02677), b=2.94 (2.73 - 3.15), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trofisch niveau
(Ref. 69278)
4.5   ±0.66 se; based on food items.
Weerstandsvermogen
(Ref. 120179)
Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Fec=2; tm=7-9; tmax = 29).
Rate of population increase Prior r = 0.40, 95% CL = 0.26 - 0.60, Based on 2 full stock assessments.
Kwetsbaarheid van de visserij
(Ref. 59153)
High to very high vulnerability (73 of 100). 🛈
Prijsklasse
(Ref. 80766)
Unknown.
Voedingsstoffen
(Ref. 124155)
Calcium = 12.5 [3.6, 65.0] mg/100g; Iron = 0.765 [0.179, 2.248] mg/100g; Protein = 19.9 [17.5, 22.3] %; Omega3 = 0.237 [0.096, 0.582] g/100g; Selenium = 65.4 [16.1, 211.4] μg/100g; VitaminA = 9.66 [3.23, 29.16] μg/100g; Zinc = 0.469 [0.225, 0.893] mg/100g (wet weight);