Squatina squatina, Angelshark : fisheries, gamefish

Squatina squatina (Linnaeus, 1758)

Angelshark
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Squatina squatina   AquaMaps   Data sources: GBIF OBIS
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Image of Squatina squatina (Angelshark)
Squatina squatina
Photo von Hernández-González, C.L.

Klassifizierung / Names Namen | Synonyme | Catalog of Fishes(Gattung, Arten) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (Haie und Rochen) (sharks and rays) > Squatiniformes (Angel sharks) > Squatinidae (Angel sharks)
Etymology: Squatina: Latin for skate, which angel sharks superficially resemble, presumably tautonymous with Squalus squatina Linnaeus 1758 (no species mentioned) (See ETYFish); squatina: Latin for skate, which angel sharks superficially resemble (See ETYFish).
More on author: Linnaeus.

Umwelt: Milieu / Klimazone / Tiefenbereich / Verbreitungsgebiet Ökologie

seewasser; brackwasser demersal; ozeanodrom (Ref. 51243); tiefenbereich 5 - 150 m (Ref. 247). Temperate; 63°N - 21°N, 19°W - 42°E

Verbreitung Territorien | FAO Gebiete | Ökosysteme | Vorkommen | Punkt Karte | Einführungen | Faunafri

East Atlantic. Its range and abundance is declining severely throughout its range. There is a proposed legal protection in Britain (Ref. 58085). The European Council Regulations 43/2009, 23/2010, 57/2011, 44/2012, 40/2013, 43/2014, 2015/104 and 2016/72 prohibit to fish for, to retain on board, to tranship and to land this species in all waters from the European Community (F. Osaer, pers.comm. 04/2016).

Länge bei der ersten Reifung / Größe / Gewicht / Alter

Geschlechtsreife: Lm 147.5, range 102 - 169 cm
Max length : 183 cm TL Männchen/unbestimmt; (Ref. 247); 244.0 cm TL (female); common length : 150 cm TL Männchen/unbestimmt; (Ref. ); max. veröff. Gewicht: 80.0 kg (Ref. 35388)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Rückenflossenstacheln (insgesamt) : 0. Broad flattened body, with enlarged pectoral and pelvic fins, no anal fin. Eyes and large spiracles dorsally. Gill openings at the sides of the head. The mouth is terminal. Coloration variable, from grey to reddish or greenish-brown with scattered small white spots and blackish dots dorsally (Ref. 78469). No ocelli on body (Ref. 247).
Body shape (shape guide): other.

Biologie     Fachlexikon (Englisch) (z.B. epibenthic)

A benthic species that occurs inshore, on coasts and along the continental shelf; may enter estuaries (Ref. 247, 58085). Found mainly on sand or mud bottoms; sluggish by day, lying buried with eyes protruding. Also utilizes areas with macroalgae, kelp or rocks (Ref. 88920). Nocturnal species, swims off bottom at night. Feeds mainly on flatfishes and other benthic fishes, but also on skates, crustaceans and molluscs, with one record of swallowed cormorant (Ref. 247, 28070). Moves to deeper waters during winter, returning to the shallower depths in the spring (Ref. 88187), moving northwards in summer. Ovoviviparous (Ref. 50449, 107715). Females generally grow larger than males (Ref. 58137, 107710, 107713, 107715). Detects weak electric fields generated by other organisms (e.g. potential prey) (Ref. 10311). The marine leech Stibarobdella macrothela is a common parasite (Ref. 107712) and the isopod Aegapheles deshaysiana a common micropredator (Ref. 107714) for this shark species in the Canary Islands. Utilized fresh and dried salted for human consumption, and possibly for oil and fishmeal (Ref. 247). Reaches 250 cm (Ref. 35388).

Lebenszyklus und Paarungsverhalten Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fruchtbarkeit | Larven

Ovoviviparous, produce 7-25 pups/litter (Ref. 58085), 13.0 +/- 1.9 pups in the Canary Is (Ref. 107713) with litter number increasing with female size. Gestation period lasts for 8-10 months (born Dec-Feb in Mediterranean, July in England) (Ref. 58085), and +/- 6 months in the Canary Is (Ref. 107713). Size at birth ranges from 24-30 cm TL (Ref. 58085). Embryos feed solely on yolk (Ref. 50449). Full term embryos weighed 189-200 g; no egg capsules found around ova or embryos (Ref. 107715). A biannual reproductive cycle is likely the case for this species (Ref. 32746), triannual cycle in the Canary Is (Ref. 107713).

Hauptreferenz Laden Sie Ihre Referenzen hoch | Referenzen | Koordinator : Compagno, Leonard J.V. | Partner

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)

IUCN Rote Liste Status (Ref. 130435: Version 2025-2 (Global))

  vom Aussterben bedroht (CR) (A2bcd); Date assessed: 12 July 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Appendix I & II: Endangered migratory species conserved through agreements

Bedrohung für Menschen

  Traumatogenic





Nutzung durch Menschen

Fischereien: weniger kommerziell; Sportfisch: ja
FAO - Fischereien: landungen, Artbeschreibung; Publication: search | FishSource | Das Meer um uns herum

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Schätzungen auf der Grundlage von Modellen

Bevorzugte Temperatur (Ref. 123201): 7.7 - 19.4, mean 11.4 °C (based on 854 cells).
Phylogenetischer Diversitätsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00430 - 0.01608), b=3.05 (2.87 - 3.23), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophische Ebene (Ref. 69278):  4.1   ±0.5 se; based on diet studies.
Widerstandsfähigkeit (Ref. 120179):  niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (Fec=9-20).
Prior r = 0.27, 95% CL = 0.18 - 0.41, Based on 1 data-limited stock assessment.
Anfälligkeit der Fischerei (Ref. 59153):  Very high vulnerability (90 of 100). 🛈
Klimaanfälligkeit (Ref. 125649):  Moderate vulnerability (40 of 100). 🛈
Preiskategorie (Ref. 80766):   Medium.
Nährstoffe (Ref. 124155):  Calcium = 3.58 [0.60, 65.38] mg/100g; Iron = 0.23 [0.02, 2.63] mg/100g; Protein = 18.2 [16.1, 20.5] %; Omega3 = 0.464 [0.160, 1.307] g/100g; Selenium = 12.7 [2.6, 61.3] μg/100g; VitaminA = 6.41 [0.58, 72.79] μg/100g; Zinc = 0.324 [0.023, 3.530] mg/100g (wet weight);