Overview

Comprehensive Description

Biology

Oviparous (Ref. 50449). Eggs have horn-like projections on the shell (Ref. 205).
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Distribution

Range Description

Western central Atlantic: Panama to French Guiana (McEachran and Carvalho 2002).
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Western Central Atlantic: Panama to French Guiana.
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Western Atlantic: northern South America.
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Physical Description

Size

Maximum size: 400 mm TL
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Max. size

40.0 cm TL (male/unsexed; (Ref. 31371))
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Bathydemersal deepwater species found on the continental slope at depths of 549–776 m (McEachran and Carvalho 2002). Attains at least 44 cm total length (TL) (McEachran and Carvalho 2002). Reproduction is presumably oviparous, like other skates.

Systems
  • Marine
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Environment

bathydemersal; marine; depth range 549 - 776 m (Ref. 31371)
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Depth range based on 4 specimens in 1 taxon.
Water temperature and chemistry ranges based on 2 samples.

Environmental ranges
  Depth range (m): 722 - 805
  Temperature range (°C): 5.170 - 5.357
  Nitrate (umol/L): 33.042 - 34.180
  Salinity (PPS): 34.592 - 34.628
  Oxygen (ml/l): 3.179 - 3.320
  Phosphate (umol/l): 2.311 - 2.345
  Silicate (umol/l): 30.321 - 30.787

Graphical representation

Depth range (m): 722 - 805

Temperature range (°C): 5.170 - 5.357

Nitrate (umol/L): 33.042 - 34.180

Salinity (PPS): 34.592 - 34.628

Oxygen (ml/l): 3.179 - 3.320

Phosphate (umol/l): 2.311 - 2.345

Silicate (umol/l): 30.321 - 30.787
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Depth: 549 - 776m.
From 549 to 776 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).
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Breviraja nigriventralis

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2009

Assessor/s
Brash, J.M., McEachran, J.D. & McCormack, C.

Reviewer/s
Notarbartolo di Sciara G., Valenti, S.V. & Kyne, P.M. (Shark Red List Authority)

Contributor/s

Justification
Blackbelly Skate (Breviraja nigriventralis) is a poorly known, small (to at least 44 cm total length) deepwater skate found at depths of 549–776 m off the northern coast of South America from Panama to French Guiana. There is no specific information on the threats to this species however it may form part of the bycatch of deeper trawl fisheries especially as fisheries expand into greater depths in the future. At present there are insufficient biological and fisheries data to assess the species beyond Data Deficient. Further research is required in order to reassess potential threats to this apparently narrowly distributed species.
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Population

Population
Population size is unknown.

Population Trend
Unknown
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Threats

Major Threats
A potential bycatch of deepwater trawl fisheries, but no information is available.
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Data deficient (DD)
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Management

Conservation Actions

Conservation Actions
There are no specific conservation measures in place at this time. Like many deepwater species, further biological and fisheries data are required to assess any future conservation needs. Where taken, catches require monitoring, particularly as deepwater fisheries expand worldwide. The development and implementation of management plans (national and/or regional e.g., under the FAO International Plan of Action for the Conservation and Management of Sharks: IPOA-Sharks) are required to facilitate the conservation and management of all chondrichthyan species in the region.
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Wikipedia

Breviraja nigriventralis

The blackbelly skate (Breviraja nigriventralis) is a bathydemersal[2] species of ray in the Rajidae family. It is found in the western Atlantic Ocean.[3]

References

  • Eol.org Retrieved on February 8, 2011.
  • Compagno, Leonard J. V. and Hamlett, William C., ed. (1999). Checklist of Living Elasmobranchs Sharks, Skates, and Rays: The Biology of Elasmobranch Fishes. Johns Hopkins University Press Baltimore: USA. ISBN/ISSN 0-8018-6048-2.
  • McEachran, John D., and Katherine A. Dunn. (1998). "Phylogenetic Analysis of Skates, a Morphologically Conservative Clade of Elasmobranchs" (Chondrichthyes: Rajidae). Copeia, vol. 1998, no. 2. pp. 271-290. ISBN/ISSN 0045-8511.M
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