United Kingdom country information

Common names: Homelyn ray, Morgath fannog, Spotted homelyn ray
Occurrence: native
Salinity: brackish
Abundance: fairly common (chances are about 50%) | Ref: Ellis, J.R., A. Cruz-Martinez, B.D. Rackham and S.I. Rodgers, 2005
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Widespread around the British Isles (8-283 m), although more abundant along the southern coast, with maximum catch rates of 88 ind/hr. Catches in the central and northern North Sea were patchy. A high abundance of juveniles was recorded in Cardigan Bay, off the east coast of Ireland and around Anglesey (Ref. 82399).
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/uk.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Wheeler, A., 1992
National Database:

Classificação / Names

Elasmobranchii (tubarões e raias) (sharks and rays) > Rajiformes (Skates and rays) > Rajidae (Skates)
Nomes comuns | Sinônimos | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Raie douce, Raya pintada, Homelyn ray, ... more

Referência principal

McEachran, J.D. and K.A. Dunn. 1998. (Ref. 27314)
Referências | Bibliografia | Coordenador : McEachran, John | Colaboradores

Tamanho / Peso / Idade

Max length : 80.0 cm TL macho/indeterminado; (Ref. 3261); common length : 50.0 cm TL macho/indeterminado; (Ref. 3261); Idade máx. registada: 18 anos (Ref. 88187)

Length at first maturity
L_m 61.0 range ? - ? cm

Ambiente

; marinhas demersal; intervalo de profundidade 8 - 530 m (Ref. 88171)

Clima / Intervalo

Temperate, preferred 12°C (Ref. 107945); 61°N - 16°N, 18°W - 25°E

Distribuição

Eastern Atlantic: Shetlands, southern North Sea and the western Baltic to Mauritania, including the western part of the Mediterranean (to Tunisia and western Greece).
Países | Áreas FAO | Ecossistemas | Ocorrências | Introduções

Descrição suscinta

Espinhos dorsais (total): 0; Espinhos anais 0; Raios anais : 0. Sub-rhomboid in shape with a short rostrum and rounded wing-tips. Upper surface almost smooth in young, but prickly in large specimens, except for bare centers of pectoral fins and hind part of disc, underside nearly smooth; orbital thorns separate, a regular row of 20-50 usually persistent thorns from nape to first dorsal fin; with 1-2 thorns between dorsal fins; 2 equal-sized dorsal fins at end of tail. Brownish dorsally with numerous small dark spots which do not reach the margin of the disc, frequently with a concentration of dark spots forming a ring around a pale centre on hind part of each pectoral fin, underside white (Ref. 3167).

Found mainly along the continental shelf (Ref. 3167). Depth range from 8-283 m in the northeast Atlantic (Ref. 82399), in the southern part of its range it occurs down to 530 m (Ref. 78469, 89037), but most common between 20-120 m (Ref. 88187). Prefers habitats with sand or mud bottoms (Ref. 78469). Juveniles usually found in shallow sandy inshore areas, adults utilize more offshore sand or sand-gravel habitats (Ref. 82399, 89038). Species buries itself to avoid predation and ambush potential prey. Feeds mainly on crustaceans (Ref. 3167) with prey size increasing as it grows (Ref. 88171), also preys on benthic worms, cephalopods and small fishes (Ref. 41849, 58137). Most individuals attain a length of 40-60 cm (Ref. 3261). Oviparous. Young may tend to follow large objects, such as their mother (Ref. 205). Detects weak electric fields generated by other organisms and generate its own weak electric fields (Ref. 10311).

Status na Lista Vermelha da IUCN (Ref. 115185)

Segura ou pouco preocupante (LC)

Perigo para os humanos

Harmless

Uso pelos humanos

Pescarias: pouco comercial

Mais informação

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Checar Manutenção em Aquário | Checar Planilhas de Fatos sobre as Espécies | Checar Planilhas de Fatos sobre Aquicultura

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Fontes da internet

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD₅₀ = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Nível Trófico (Ref. 69278)
3.9 ±0.2 se; Based on diet studies.

Resiliência (Ref. 69278)
Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (K=0.18-0.21; tm=8; tmax=14; Fec=24)

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

Categoria de preço (Ref. 80766)
Medium

Raja montagui Fowler, 1910