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Apristurus brunneus (Gilbert, 1892)

Brown catshark
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Apristurus brunneus   AquaMaps   Data sources: GBIF OBIS
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Image of Apristurus brunneus (Brown catshark)
Apristurus brunneus
Picture by Van Orden, W.

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Pentanchidae (Deepwater catsharks)
Etymology: Apristurus: a-, Latin privative, i.e., without; pristis, from pristes (Gr.), sawyer (but here meaning saw); oura (Gr.), tail, referring to absence of saw-toothed crest of enlarged dermal denticles along upper edge of caudal fin as found in the closely related Pristiurus (=Galeus). (See ETYFish);  brunneus: Medieval Latin for brown, referring to its “uniform warm brown” color above and below. (See ETYFish).
More on author: Gilbert.

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

Marine; demersal; depth range 33 - 1306 m (Ref. 96339). Subtropical; 60°N - 39°S, 138°W - 70°W (Ref. 56871)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Pacific: British Columbia, Canada to northern Baja California, Mexico. Probably south to Panama, Ecuador, and Peru.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 69.0 cm TL male/unsexed; (Ref. 96339)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 0; Anal spines: 0. Dark brown, with conspicuous light posterior margin on fins (Ref. 247).

Biology     Glossary (e.g. epibenthic)

Inhabits the outer continental shelf and upper slope (Ref. 244). Found over muddy or sandy bottoms (Ref. 27436). Feeds on small true shrimps, euphausiid shrimps, squids, and small fishes (Ref. 244). Oviparous (Ref. 50449).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Oviparous, with a single egg per oviduct (Ref. 244). Eggs are enclosed in oblong transparent cases with tendrils at each end (Ref. 6885). Embryos feed solely on yolk (Ref. 50449). In Canada, females carry egg cases from February to August (Ref. 244).

Main reference Upload your references | References | Coordinator | Collaborators

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. Rome: FAO. (Ref. 244)

IUCN Red List Status (Ref. 130435)

  Data deficient (DD) ; Date assessed: 19 March 2014

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Fisheries: of no interest
FAO - Publication: search | FishSource |

More information

Trophic ecology
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Diet compositions
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Ecology
Ecology
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Length-length rel.
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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | OceanAdapt | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 5.6 - 9, mean 6.9 °C (based on 52 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00176 - 0.00714), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.6   ±0.0 se; based on diet studies.
Resilience (Ref. 120179):  Very Low, minimum population doubling time more than 14 years (Fec assumed to be <10).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (48 of 100).