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Overview
Comprehensive Description
Biology
Found on the upper continental slopes. 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
Eastern Pacific. Possibly also occurs in the Northeast Pacific. Nominally from the Eastern Central Pacific off Morocco, but this is probably another species (Compagno in prep. b).
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IUCN
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Distribution
European waters (ERMS scope)
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van der Land, J.; Costello, M.J.; Zavodnik, D.; Santos, R.S.; Porteiro, F.M.; Bailly, N.; Eschmeyer, W.N.; Froese, R. (2001). Pisces, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 357-374
http://www.marbef.org/data/aphia.php?p=sourcedetails&id=1411
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World Register of Marine Species
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Eastern Pacific: Gulf of Panama, Ecuador and central Chile. Also nominally recorded from the northeast Atlantic off Morocco, but identification uncertain.
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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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Physical Description
Size
Max. size
70.0 cm TL (male/unsexed; (Ref. 9996))
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Springer, S. 1990 Scyliorhinidae. p. 90-94. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1.
http://www.fishbase.org/references/FBRefSummary.php?id=9996
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FishBase
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Ecology
Habitat
Habitat and Ecology
Habitat and Ecology
Systems
A little-known shark of the upper continental slope reported at depths of 400 to 925 m (Compagno in prep. b) and 250 to 500 m off Northern and Central Chile (González 2001, Acuña and Villarroel 2002). Females never observed. Mature males reported at 51 to 59 cm total length (TL) (Compagno in prep. b).
Apristurus species are relatively small, sluggish sharks that live on or near the bottom. Diet includes crustaceans (penaeid shrimps, euphausiids), squids and small fishes. Where known reproduction is oviparous with one egg per oviduct. Eggcases are usually thick-walled and about 5 to 6.8 cm long and 2.5 to 2.9 cm wide. The anterior end of the case has a long weak fibrous thread on each corner. The posterior end usually has two small processes, each with a long coiled tendril. As in shallow water scyliorhinids the coiled tendrils are probably used to attach the egg cases to hard substrates and/or biogenic structures as they are laid.
Apristurus species are relatively small, sluggish sharks that live on or near the bottom. Diet includes crustaceans (penaeid shrimps, euphausiids), squids and small fishes. Where known reproduction is oviparous with one egg per oviduct. Eggcases are usually thick-walled and about 5 to 6.8 cm long and 2.5 to 2.9 cm wide. The anterior end of the case has a long weak fibrous thread on each corner. The posterior end usually has two small processes, each with a long coiled tendril. As in shallow water scyliorhinids the coiled tendrils are probably used to attach the egg cases to hard substrates and/or biogenic structures as they are laid.
Systems
- Marine
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IUCN
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Depth range based on 5 specimens in 1 taxon.
Water temperature and chemistry ranges based on 1 sample.
Environmental ranges
Depth range (m): 400 - 797.5
Temperature range (°C): 5.419 - 5.419
Nitrate (umol/L): 33.076 - 33.076
Salinity (PPS): 34.452 - 34.452
Oxygen (ml/l): 3.175 - 3.175
Phosphate (umol/l): 2.277 - 2.277
Silicate (umol/l): 24.387 - 24.387
Graphical representation
Depth range (m): 400 - 797.5
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
Water temperature and chemistry ranges based on 1 sample.
Environmental ranges
Depth range (m): 400 - 797.5
Temperature range (°C): 5.419 - 5.419
Nitrate (umol/L): 33.076 - 33.076
Salinity (PPS): 34.452 - 34.452
Oxygen (ml/l): 3.175 - 3.175
Phosphate (umol/l): 2.277 - 2.277
Silicate (umol/l): 24.387 - 24.387
Graphical representation
Depth range (m): 400 - 797.5
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Depth: 400 - 925m.
From 400 to 925 meters.
Habitat: bathydemersal. Found on the upper continental slopes.
From 400 to 925 meters.
Habitat: bathydemersal. Found on the upper continental slopes.
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FishWise Professional
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Environment
bathydemersal; marine; depth range 400 - 925 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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FishBase
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Trophic Strategy
Found on the upper continental slopes. Feeds on pelagic crustaceans (Ref. 58748).
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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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FishBase
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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
2004
Assessor/s
Huveneers, C., Duffy, C. & Acuña, E.
Reviewer/s
Kyne, P.M., Cavanagh, R.D. & Fowler, S.L. (Shark Red List Authority)
Contributor/s
Justification
A poorly known deepwater catshark of the continental slope off South America in the Eastern Pacific (nominal records from the Atlantic are probably a misidentification). Reaches a maximum size of 59 cm total length (TL) but nothing is known of its biology. Taken incidentally in small numbers in the Chilean deep-sea shrimp Heterocarpus reedi fishery (Acuña and Villaroel 2002). Information on interactions with fisheries not available from other countries in its range. Insufficient information is available to assess the species beyond Data Deficient at this time.
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IUCN
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Trends
Population
Population Trend
Unknown
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IUCN
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Threats
Threats
Major Threats
Potentially threatened by expansion of deepwater trawl fisheries. Off Northern and Central Chile (from 27º46?37?? to 33º19?59??S) the species is taken as bycatch in the deep sea shrimp Heterocarpus reedi fishery (González 2001, Acuña and Villarroel 2002).
Not known to be utilized at present.
Not known to be utilized at present.
© International Union for Conservation of Nature and Natural Resources
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IUCN
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Data deficient (DD)
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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
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FishBase
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Management
Conservation Actions
Conservation Actions
No conservation actions are in place for this species.
© International Union for Conservation of Nature and Natural Resources
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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
Largenose catshark
The largenose catshark, Apristurus nasutus, is a cat shark of the family Scyliorhinidae found on the upper continental slopes in the eastern Pacific from the Gulf of Panama, Ecuador and central Chile, between latitudes 9° N and 28° S. Its length is up to 70 cm.
Reproduction is oviparous.
References
- Froese, Rainer, and Daniel Pauly, eds. (2006). "Apristurus nasutus" in FishBase. July 2006 version.
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