Squatina squatina   (Linnaeus, 1758)

Angelshark
Catalog of Fishes (gen., sp.) | ITIS | CoL
Classification
Elasmobranchii | Squatiniformes | Squatinidae
Synonyms
Common names
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Main reference
Size / Weight / Age
Max length : 183 cm TL male/unsexed; (Ref. 247); 244 cm TL (female); common length : 150 cm TL male/unsexed; (Ref. ); max. published weight: 80.0 kg (Ref. 35388)
Length at first maturity
Lm ?, range 126 - 169 cm
Environment
Demersal; oceanodromous (Ref. 51243); marine; depth range ? - 150 m (Ref. 247)
Climate / Range
Temperate; 63°N - 21°N, 19°W - 37°E
Distribution
Northeast Atlantic: southern Norway, Sweden and Shetland Islands to Morocco and West Sahara, including the Canary Islands and the Mediterranean (Ref. 247). Range and abundance declining severly throughout its range; proposed legal protection in Britain (Ref. 58085).
Countries | FAO areas | Ecosystems | Occurrences | Introductions
Short description
Dorsal spines (total): 0. No ocelli on body (Ref. 247).
Biology
    Glossary (e.g. epibenthic)
This is a benthic species that occurs inshore (5 m), on coasts and estuaries to >150 m on continental shelf. Found mainly on sand or mud bottoms; sluggish by day, lying buried with eyes protruding and swims strongly off bottom at night. Feeds mainly on flatfishes, skates, crustaceans and molluscs with one record of swallowed cormorant. Produce 7-25 pups/litter, increasing with female size; gestation 8-10 months (born Dec.-Feb in Mediterranean, July in England) (Ref. 58085). Ovoviviparous (Ref. 50449). Seasonally migratory in colder water, moving northwards in summer. Utilized fresh and dried salted for human consumption, and possibly for oil and fishmeal (Ref. 247). Reaches 250 cm (Ref. 35388).
IUCN Red List Status (Ref. 57073)
Threat to humans
  Critically Endangered (CR) (A2bcd+3d+4bcd)
  Traumatogenic
Human uses
Fisheries: minor commercial; gamefish: yes
More information
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Estimation of some characteristics with mathematical models
Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5000
Trophic Level (Ref. 69278)
4.05 s.e. 0.64 Based on diet studies.
Resilience (Ref. 69278)
Very Low, minimum population doubling time more than 14 years (Fec=9-20)
Vulnerability (Ref. 59153)
Price category (Ref. 80766)
Very high vulnerability (85 of 100)





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Page last modified by : celloran - 20 April 2010

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