Overview

Comprehensive Description

Biology

Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (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)
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Distribution

Northwest Atlantic: off Nova Scotia, Canada (ROM: Latitude: 42.65, Longitude: -64.19)
  • North-West Atlantic Ocean species (NWARMS)
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Northwest Atlantic: off Nova Scotia, Canada.
  • Mc Eachran, J.D. and T. Miyake 1987 A new species of skate of the genus Breviraja from off Nova Scotia, with comments on the status of Breviraja and Neoraja (Chondrichthyes, Rajoidei). Copeia 1987(2):409-417. (Ref. 31389)
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Western North Atlantic.
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Physical Description

Size

Maximum size: 390 mm TL
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Max. size

39.0 cm TL (male/unsexed; (Ref. 31389)); 45.1 cm TL (female)
  • Mc Eachran, J.D. and T. Miyake 1987 A new species of skate of the genus Breviraja from off Nova Scotia, with comments on the status of Breviraja and Neoraja (Chondrichthyes, Rajoidei). Copeia 1987(2):409-417. (Ref. 31389)
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Type Information

Paratype for Breviraja marklei McEachran & Miyake
Catalog Number: USNM 277973
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Year Collected: 1984
Locality: Off Nova Scotia., Nova Scotia, Canada, Atlantic
Depth (m): 443 to 463
  • Paratype: McEachran, J. D. & Miyake, T. 1987. Copeia. 1987 (2): 410.
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Ecology

Habitat

benthic
  • North-West Atlantic Ocean species (NWARMS)
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Environment

bathydemersal; marine; depth range 443 - 988 m (Ref. 31389)
  • Mc Eachran, J.D. and T. Miyake 1987 A new species of skate of the genus Breviraja from off Nova Scotia, with comments on the status of Breviraja and Neoraja (Chondrichthyes, Rajoidei). Copeia 1987(2):409-417. (Ref. 31389)
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Depth range based on 2 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 453 - 602
  Temperature range (°C): 4.476 - 4.552
  Nitrate (umol/L): 20.781 - 20.818
  Salinity (PPS): 34.852 - 34.920
  Oxygen (ml/l): 5.239 - 5.496
  Phosphate (umol/l): 1.374 - 1.379
  Silicate (umol/l): 13.819 - 14.401

Graphical representation

Depth range (m): 453 - 602

Temperature range (°C): 4.476 - 4.552

Nitrate (umol/L): 20.781 - 20.818

Salinity (PPS): 34.852 - 34.920

Oxygen (ml/l): 5.239 - 5.496

Phosphate (umol/l): 1.374 - 1.379

Silicate (umol/l): 13.819 - 14.401
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 443 - 988m.
From 443 to 988 meters.

Habitat: bathydemersal.
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Life History and Behavior

Life Cycle

Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
  • Breder, C.M. and D.E. Rosen 1966 Modes of reproduction in fishes. T.F.H. Publications, Neptune City, New Jersey. 941 p. (Ref. 205)
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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