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Elasmobranchii (tubarões e raias) (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Softnose skates)
Etymology: aenigma: Name from Latin 'aenigma' or enigma, in allusion to its unresolved taxonomic status..
More on authors: Last & McEachran.

Issue
Placement in the genus is provisional pending the discovery of juvenile specimens. Based on a 43.6 cm TL female holotype which is probably close to maturity, lacking both rostral and orbital thorns (Ref. 58023).

Environment: milieu / climate zone / depth range / distribution range Ecologia

marinhas batidemersal; intervalo de profundidade ? - 437 m (Ref. 58023). Deep-water

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Western Pacific: New Zealand.

Tamanho / Peso / Idade

Maturity: L_m ? range ? - ? cm
Max length : 43.6 cm TL macho/indeterminado; (Ref. 58023)

Descrição suscinta Chaves de identificação | Morfologia | Morfometria

A species of Brochiraja with the following combination of characters: rounded disc; very long tail, 1.5 times disc length, 2.9 times ventral head length, 6.8 times snout length; orbit moderately large, 2.4 in preorbital snout length; calcified rostral shaft very short; tail base narrow, width at pelvic fin insertions 2 times width at midlength; dermal denticles closely spaced, over entire upper disc; mid-dorsal surface of tail with thorns and denticles; dorsolateral surface of tail without thorns; orbital thorns absent; entire ventral surface naked; medium brownish with darker mottling above and below; indistinct rows of pale-edged pores on ventral surface; nuchal pore band indistinct; anterior pelvic fin lobe bulbous, black tipped; total pectoral radials 73-74; predorsal vertebrae 115; c. 30 tooth rows in upper jaw (Ref. 58023).

Known only from a single specimen; no information on mature males or juveniles (Ref. 58023).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Referência principal Upload your references | Referências | Coordenador : McEachran, John | Colaboradores

Last, P.R. and J.D. McEachran, 2006. New softnose skate genus Brochiraja from New Zealand (Rajidae: Arhynchobatinae) with description of four new species. N. Z. J. Mar. Freshwater Res. 40(1):65-90. (Ref. 58023)

Status na Lista Vermelha da UICN (Ref. 130435)

Dados insuficientes (DD) ; Date assessed: 20 June 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

Harmless

Uso pelos humanos

FAO - Publication: search | FishSource |

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Estimates based on models

Índice de diversidade filogenética (Ref. 82804): PD₅₀ = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00550 (0.00273 - 0.01106), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Nível Trófico (Ref. 69278): 3.7 ±0.7 se; based on size and trophs of closest relatives

Resiliência (Ref. 120179): médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low to moderate vulnerability (34 of 100).

Brochiraja aenigma Last & McEachran, 2006