Classification / Names Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchi (squali e razze) (sharks and rays) > Rajiformes (Skates and rays) > Arhynchobatidae (Softnose skates)
Etymology: Bathyraja: Greek, bathys = deep + Latin, raja, -ae = a ray (Raja sp) (Ref. 45335).

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

marino batidemersale; distribuzione batimetrica 300 - 1470 m (Ref. 26346). Deep-water

Distribuzione Stati | Aree FAO | Ecosystems | Presenze | Point map | Introduzioni | Faunafri

Southwest Pacific: endemic to New Zealand.

Size / Peso / Age

Maturity: L_m ? range ? - ? cm
Max length : 140 cm TL maschio/sesso non determinato; (Ref. 26346)

Short description Chiavi di identificazione | Morfologia | Morfometria

Dark brown to grey in color (Ref. 26346). Juveniles covered with small prickles dorsally; adults smooth, thin-bodied and with a greatly elongated snout (Ref. 26346).

Adults inhabit the continental slope (Ref. 26346). 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 8.8 cm long and 4.7 cm wide (Ref. 41249).

Life cycle and mating behavior Maturities | Riproduzione | Spawnings | Egg(s) | Fecundities | Larve

Oviparous (Ref. 26346). 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). Eggs have horn-like projections on the shell (Ref. 205).

Main reference Upload your references | Bibliografia | Coordinatore : McEachran, John | Collaboratori

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)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 23 June 2017

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

Informazioni ulteriori

Trophic ecology
Prede
Diet compositions
Food consumptions
Food rations
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Ecology
Ecologia

Population dynamics
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Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
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Life cycle
Riproduzione
Maturities
Fecundities
Spawnings
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Egg(s)
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Dinamica popolazioni larvali

Distribution
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Anatomy
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Physiology
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Genetica
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Stamps, coins, misc.

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References
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Fonti Internet

Estimates based on models

Preferred temperature (Ref. 123201): 5 - 9.5, mean 7.1 °C (based on 197 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00513 (0.00253 - 0.01042), b=3.12 (2.95 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.1 ±0.7 se; based on size and trophs of closest relatives

Resilienza (Ref. 120179): Basso, tempo minimo di raddoppiamento della popolazione 4.5 - 14 anni (Fec assumed to be <100).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (84 of 100).

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