Classificação / Names
Nomes comuns | Sinónimos | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Elasmobranchii (tubarões e raias) (sharks and rays) >
Rajiformes (Skates and rays) >
Rajidae (Skates)
Etymology: Rajella: Latin, raja, -ae = a sting ray (Raja sp.) (Ref. 45335).
Ambiente / Clima / Intervalo
Ecologia
; marinhas batidemersal; intervalo de profundidade 150 - 1170 m (Ref. 5951). Deep-water, preferred 5°C (Ref. 107945); 67°N - 58°N
Northeast Atlantic: Iceland and along rise to Faroes, also Norwegian coasts and Skagerrak. Northwest Atlantic: western Greenland.
Length at first maturity / Tamanho / Peso / Idade
Maturity: Lm ?, range 97 - ? cm
Max length : 123 cm TL macho/indeterminado; (Ref. 40637); Peso máx. publicado: 11.2 kg (Ref. 40637)
Descrição breve
Morfologia | Morfometria
Espinhos dorsais (total): 0; Espinhos anais 0; Raios anais moles: 0. Snout moderately long, its tip pointed and somewhat protruding; upper surface predominantly smooth, only on head and front margins more or less prickly, tail entirely spinulose, underside smooth; up to 4 thorns in front of as well as behind eye, a continuous median row of 42-51 thorns from nape to first dorsal fin (Ref. 3167). Upper surface plain fawn color, slate grey or clay grey, lower surface white, with a grey longitudinal band along tail and grey blotch on either side of cloaca (Ref. 6902).
Occur in moderately deep water but mainly around 250 m in boreal and partly arctic latitudes (Ref. 3167). Benthic (Ref. 58426). Feed on all kinds of bottom animals (Ref. 3167). Oviparous. Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205). Eggs are oblong capsules with stiff pointed horns at the corners deposited in sandy or muddy flats (Ref. 205). Egg capsules are 10.7 cm long and 7.7 cm wide (Ref. 41251, 41301).
Life cycle and mating behavior
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Oviparous (Ref. 3167). Paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Distinct pairing with embrace. Young may tend to follow large objects, such as their mother (Ref. 205).
McEachran, J.D. and K.A. Dunn, 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia 1998(2):271-290. (Ref. 27314)
Categoria na Lista Vermelha da IUCN (Ref. 115185)
CITES (Ref. 94142)
Not Evaluated
Ameaça para o homem
Harmless
Utilização humana
Peixe desportivo: sim
Mais informação
ReferênciasAquaculturaPerfil para aquaculturaEstirpesGenéticaFrequência dos alelosHereditariedadeDoençasProcessamentoMass conversion
Ferramentas
Relatórios especiais
Descarregue XML
Fontes da internet
Estimates of some properties based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Nível Trófico (Ref.
69278): 3.6 ±0.50 se; Based on food items.
Resiliência (Ref.
69278): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (Fec assumed to be <100).
Vulnerabilidade (Ref.
59153): High to very high vulnerability (67 of 100) .