Portugal country information

Common names: Arreião, Eagle ray, Raia
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist: Portugal
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/po.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: McEachran, J.D. and C. Capapé, 1984
National Database: Portuguese Freshwater Fishes

Classification / Names

Elasmobranchii (sharks and rays) > Myliobatiformes (Stingrays) > Myliobatidae (Eagle and manta rays) > Myliobatinae
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

لِياء عُقاب شائع أو لياء نسر شائع, 鲼, Aigle commun, ... more

Main reference

McEachran, J.D. and B. Séret. 1990. (Ref. 4440)
References | Biblio | Coordinator : McEachran, John | Collaborators

Size / Weight / Age

Max length : 183 cm WD male/unsexed; (Ref. 4440); max. published weight: 14.5 kg (Ref. 40637)

Length at first maturity
L_m ?, range 60 - ? cm

Environment

Marine; brackish; benthopelagic; depth range 1 - 300 m (Ref. 4440)

Climate / Range

Subtropical, preferred 26°C (Ref. 107945); 54°N - 35°S, 19°W - 36°E

Distribution

Eastern Atlantic: Madeira, Morocco and the Canary Islands north to the western coasts of Ireland and British Isles and the southwestern North Sea, south to Natal, South Africa. Also throughout the Mediterranean.
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

A plain eagleray with a short, rounded snout; disc with broadly angular corners, and upper or lower jaw usually with 7 rows of plate-like teeth (Ref. 5578). Brown or blackish dorsally, white ventrally (Ref. 5578). No caudal fin (Ref. 5578).

Found in shallow lagoons (Ref. 3965), bays and estuaries; also offshore down to at least 95 m (Ref. 5578). Often found in groups (Ref. 5578). Feeds on benthic crustaceans, mollusks and fish. Ovoviviparous (Ref. 50449). Gestation period of 6-8 months, the females give birth to 3-7 young (Ref. 35388). Caught by shore and ski-boat anglers, usually released after capture (Ref. 5578). Flesh is highly esteemed (Ref. 3965).

IUCN Red List Status (Ref. 115185)

Data deficient (DD)

Threat to humans

Harmless

Human uses

Fisheries: minor commercial; gamefish: yes

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Food consumption
Ration

Common names
Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development

Age/Size
Growth
Length-weight
Length-length
Length-frequencies
Morphometrics
Morphology
Larvae
Larval dynamics
Recruitment
Abundance

References
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion

Collaborators
Pictures
Stamps, Coins
Sounds
Ciguatera
Speed
Swim. type
Gill area
Otoliths
Brains
Vision

Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5002 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trophic Level (Ref. 69278)
3.6 ±0.54 se; Based on food items.

Resilience (Ref. 69278)
Very Low, minimum population doubling time more than 14 years (Fec=3)

Vulnerability (Ref. 59153)
High vulnerability (59 of 100)

Price category (Ref. 80766)
High

Myliobatis aquila (Linnaeus, 1758)