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Elasmobranchii (tubarões e raias) (sharks and rays) > Myliobatiformes (Stingrays) > Aetobatidae (Pacific eagle rays)
Etymology: Aetobatus:Greek, aetos = eagle + Greek, batis, batidos = a ray (Raja sp.) (Ref. 45335); narutobiei:Named for its common name in the Japanese waters ‘Naru tobi-ei’ (pronounced ‘Nar-oo-tobee-ay’), Naru’ referring to Naru Island and ‘Tobi-ei’ the Japanese name used for eagle rays which translates to black kite (a bird); noun in apposition. Eponymy: Though it looks as if it could be an eponym, the binomial combines ‘Naru’ (Naru Island, Japan) with ‘tobi-ei’ – the Japanese name for eagle rays. (Ref. 128868), visit book page.
Ambiente: milieu / zona climática / intervalo de profundidade / gama de distribuição Ecologia
Northwest Pacific: eastern Vietnam, Hong Kong, China, Korea and southern Japan.
Tamanho / Peso / Idade
Maturidade: Lm? range ? - 80 cm Max length : 100.0 cm WD macho/indeterminado; (Ref. 94821); 150.0 cm WD (female); peso máx. Publicado: 14.4 kg (Ref. 94821); peso máx. Publicado: 14.4 kg
Descrição breve Chaves de identificação | Morfologia | Morfometria
This medium to large-sized Aetobatus (reaching 150 cm DW) possess the following diagnostic characters: uniformly greenish grey to brownish dorsal surfaces, without pale spots or ocelli; long head, ventral length 27.4-31.9% DW; long to very long rostral lobe (longest in adult males) and narrow, tapering evenly to tip; single row of teeth plates, those in lower jaw chevron-shaped; width of lower tooth plate about 2.4 times its width and in about 18 series; 100-104 pectoral-fin radials (excluding propterygial radials anterior of eyes); 88-90 total vertebral centra (including synarcual); pelvic-fin radials 1 (with 2-5 fused elements) +17-18; males mature by about 80 cm DW; born at 33.4-35.2 cm DW (Ref. 94821). Body shape (shape guide): other (see remarks); Cross section: flattened.
Found in shallow waters at water temperature above 15-17°C; in winter months, the species leave the shallower bays for nearby sea where water temperature is above 15°C brought by the Kuroshio current-derived warm waters (Ref. 94821).
Ciclo de vida e comportamento de acasalamento Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
White, W.T., K. Furumitsu and A. Yamaguchi, 2013. A new species of Eagle ray Aetobatus narutobiei from the Northwest Pacific: an example of the critical role taxonomy plays in fisheries and ecological sciences. Plos One 8(12)e83785:1-12. (Ref. 94821)
Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2025-2 (Global))
Ecologia Trófica Produtos alimentares (presas) Composição da dieta Consumo alimentar Rações alimentares Predadores
Ecologia Ecologia
Dinâmica das populações Parâmetros de crescimento Idades / tamanhos máximos Comprimento-peso rel. Comprimento-comprimento rel. Frequência de comprimento Conversão de massa Recrutamento Abundância
Ciclo de vida Reprodução Maturidade Maturidade/Rel. das guelras Fecundidade Desova Agregações de desova Ovos Desenvolvimento dos ovos Larvas Dinâmica larvar
Fisiologia Composição corporal Nutrientes Consumo de oxigénio Tipo de natação Velocidade de natação Pigmentos visuais Som de peixe Doenças e Parasitas Toxicidade (LC50s)
