Somniosus antarcticus  Whitley, 1939

Southern sleeper shark
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Somniosus antarcticus   AquaMaps   Data sources: GBIF OBIS
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Image of Somniosus antarcticus (Southern sleeper shark)
Somniosus antarcticus
Picture by Reyes, P.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Squaliformes (Bramble, sleeper and dogfish sharks) > Somniosidae (Sleeper sharks)
Etymology: Somniosus: Latin, somnus = sleep (Ref. 45335).   More on author: Whitley.

Environment / Climate / Range Ecology

Marine; benthopelagic; depth range 485 - 1150 m (Ref. 50224).   Deep-water

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 438 cm TL male/unsexed; (Ref. 50224); 430.0 cm TL (female)

Short description Morphology | Morphometrics

Vertebrae: 36 - 38. Somniosus antarcticus differs from S. pacificus by the following characters: interdorsal space about 80% of prebranchial length (vs. 70%); height of first dorsal fin about 3.0% of precaudal length (PCL) (vs. 3.7%); height of second dorsal fin about 2.9% of PCL (vs. 3.4%); number of turns in spiral valve 36-41 (mode 39) (vs. 32-37, mode 33); precaudal vertebrae 30-31 (mode 30) (vs. 28-30, mode 29) (Ref. 50224).

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

South Indo-Pacific and South Atlantic.

Biology     Glossary (e.g. epibenthic)

Main reference Upload your references | References | Coordinator | Collaborators

Yano, K., J.D. Stevens and L.J.V. Compagno, 2004. A review of the systematics of the sleeper shark genus Somniosus with redescriptions of Somniosus (Somniosus) antarcticus and Somniosus (Rhinoscymnus) longus (Squaliformes: Somniosidae). Ichthyol. Res. 51:360-373.

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | National databases | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5313   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00501 (0.00208 - 0.01208), b=3.13 (2.92 - 3.34), based on LWR estimates for this Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  4.5   ±0.58 se; Based on food items.
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years ().
Vulnerability (Ref. 59153):  Very high vulnerability (87 of 100) .