Overview
Comprehensive Description
Biology
Found on the upper continental slope. Little is known of its biology. Oviparous (Ref. 50449).
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Compagno, L.J.V. 1984 FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. (Ref. 244)
http://www.fishbase.org/references/FBRefSummary.php?id=244&speccode=857
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FishBase
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Distribution
Range Description
Restricted range in the western central Atlantic: USA (southern Florida), Bahamas and northern Cuba (Compagno in prep. b.).
© International Union for Conservation of Nature and Natural Resources
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IUCN
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Distribution
Gulf of Mexico
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Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.
http://www.marinespecies.org/porifera/porifera.php?p=sourcedetails&id=145245
© WoRMS for SMEBD
Source:
World Register of Marine Species
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Western Central Atlantic: southern Florida (USA), Bahamas, and Cuba.
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Compagno, L.J.V. 1984 FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. (Ref. 244)
http://www.fishbase.org/references/FBRefSummary.php?id=244&speccode=857
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FishBase
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Physical Description
Size
Max. size
32.0 cm TL (male/unsexed; (Ref. 244))
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Compagno, L.J.V. 1984 FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. (Ref. 244)
http://www.fishbase.org/references/FBRefSummary.php?id=244&speccode=857
© WorldFish Center - FishBase
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FishBase
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Diagnostic Description
Broad rounded snout. Pale brown back and upper sides transversely marked by series of indistinct darker blotches. Finer markings consist of small oval whitish spots, evenly distributed over the whole back and upper sides (Ref. 6032).
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Bigelow, H.B. and W.C. Schroeder 1948 Sharks. p. 59-546. In J. Tee-Van, C.M. Breder, S.F. Hildebrand, A.E. Parr and W.C. Schroeder (eds.) Fishes of the Western North Atlantic. Part one. Lancelets, cyclostomes, sharks. Sears Foundation for Marine Research, Yale University, New Haven. 576 p. (Ref. 6032)
http://www.fishbase.org/references/FBRefSummary.php?id=6032&speccode=891
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FishBase
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Ecology
Habitat
Habitat and Ecology
Habitat and Ecology
Systems
Upper continental slope at depths of 229?550 m (most records below 366 m) (Compagno in prep. b.). Virtually nothing known of the species? biology. Reaches a maximum size of ~32 cm TL (Compagno in prep. b.).
Systems
- Marine
© International Union for Conservation of Nature and Natural Resources
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IUCN
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Depth range based on 11 specimens in 1 taxon.
Water temperature and chemistry ranges based on 6 samples.
Environmental ranges
Depth range (m): 302 - 549
Temperature range (°C): 11.781 - 18.177
Nitrate (umol/L): 7.188 - 17.922
Salinity (PPS): 35.477 - 36.473
Oxygen (ml/l): 2.919 - 4.460
Phosphate (umol/l): 0.385 - 1.331
Silicate (umol/l): 3.221 - 13.314
Graphical representation
Depth range (m): 302 - 549
Temperature range (°C): 11.781 - 18.177
Nitrate (umol/L): 7.188 - 17.922
Salinity (PPS): 35.477 - 36.473
Oxygen (ml/l): 2.919 - 4.460
Phosphate (umol/l): 0.385 - 1.331
Silicate (umol/l): 3.221 - 13.314
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
Water temperature and chemistry ranges based on 6 samples.
Environmental ranges
Depth range (m): 302 - 549
Temperature range (°C): 11.781 - 18.177
Nitrate (umol/L): 7.188 - 17.922
Salinity (PPS): 35.477 - 36.473
Oxygen (ml/l): 2.919 - 4.460
Phosphate (umol/l): 0.385 - 1.331
Silicate (umol/l): 3.221 - 13.314
Graphical representation
Depth range (m): 302 - 549
Temperature range (°C): 11.781 - 18.177
Nitrate (umol/L): 7.188 - 17.922
Salinity (PPS): 35.477 - 36.473
Oxygen (ml/l): 2.919 - 4.460
Phosphate (umol/l): 0.385 - 1.331
Silicate (umol/l): 3.221 - 13.314
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Environment
bathydemersal; marine; depth range 200 - 600 m (Ref. 55584), usually 366 - 550 m (Ref. 244)
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Compagno, L.J.V. 1984 FAO species catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. (Ref. 244)
http://www.fishbase.org/references/FBRefSummary.php?id=244&speccode=857
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Kiraly, S.J., J.A. Moore and P.H. Jasinski 2003 Deepwater and other sharks of the U.S. Atlantic Ocean Exclusive Economic Zone. Mar. Fish. Rev. 65(4):1-64. (Ref. 55584)
http://www.fishbase.org/references/FBRefSummary.php?id=55584&speccode=652
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FishBase
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Life History and Behavior
Life Cycle
Oviparous, paired eggs are laid. Embryos feed solely on yolk (Ref. 50449).
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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)
http://www.fishbase.org/references/FBRefSummary.php?id=205&speccode=1256
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Conservation
Conservation Status
IUCN Red List Assessment
Red List Category
LC
Least Concern
Red List Criteria
Version
3.1
Year Assessed
2009
Assessor/s
Sherrill-Mix, S.A. & Burgess, G.H.
Reviewer/s
Kyne, P.M., Stevens, J.D., Pollard, D. & Dudley, S. (Shark Red List Authority)
Contributor/s
Justification
Little is known about this deepwater catshark. Its population and biology is poorly understood. It has only been caught off southern Florida (USA), Cuba and the Bahamas. Since this shark is only rarely caught, it is being placed in the Least Concern category. If fishing pressure increases, this status should immediately be reassessed due to the small range of this species.
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
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Trends
Population
Population
Population Trend
Reported to be uncommon (Compagno in prep. b.).
Population Trend
Unknown
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
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Threats
Threats
Major Threats
May be taken in demersal deepwater trawl fisheries, but this species is very rarely caught (J. Castro, pers. comm.).
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
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Least Concern (LC)
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IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
http://www.fishbase.org/references/FBRefSummary.php?id=57073
© WorldFish Center - FishBase
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FishBase
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Management
Conservation Actions
Conservation Actions
Further specimens are required to obtain information on life history.
© International Union for Conservation of Nature and Natural Resources
Source:
IUCN
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Relevance to Humans and Ecosystems
Benefits
Importance
fisheries: of no interest
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Coppola, S.R., W. Fischer, L. Garibaldi, N. Scialabba and K.E. Carpenter 1994 SPECIESDAB: Global species database for fishery purposes. User's manual. FAO Computerized Information Series (Fisheries). No. 9. Rome, FAO. 103 p. (Ref. 171)
http://www.fishbase.org/references/FBRefSummary.php?id=171&speccode=2534
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FishBase
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Wikipedia
Dwarf catshark
- Not to be confused with Asymbolus parvus, also known as the dwarf catshark.
The dwarf catshark, Scyliorhinus torrei, is a catshark, family Scyliorhinidae, found off southern Florida, the Bahamas, and Cuba.[2]
References
- ^ S. A. Sherrill-Mix & G. H. Burgess (2004). "Scyliorhinus torrei". IUCN Red List of Threatened Species. Version 2009.2. International Union for Conservation of Nature. http://www.iucnredlist.org/apps/redlist/details/161449. Retrieved February 24, 2010.
- ^ Froese, Rainer, and Daniel Pauly, eds. (2006). "Scyliorhinus torrei" in FishBase. July 2006 version.
Source:
Wikipedia
Unreviewed
