Somniosus pacificus, Pacific sleeper shark

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spesis berkaitan
- spesis di dalam
  Somniosus
- spesis di dalam
  Somniosidae
- - klasifikasi -
- Somniosidae
- Squaliformes
- Elasmobranchii
- Chordata
- Animalia

Somniosus pacificus Bigelow & Schroeder, 1944

Pacific sleeper shark

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Native range | All suitable habitat | Point map | Year 2050

This map was computer-generated and has not yet been reviewed.

Somniosus pacificus AquaMaps Data sources: GBIF OBIS

muatnaik fotos/gambar dan video
Pictures | imej Google

Image of Somniosus pacificus (Pacific sleeper shark)

Somniosus pacificus
Juvenile picture by Gadig, O.B.F.

klasifikasi / Names Nama-nama umum | Sinonim (persamaan) | Catalog of Fishes(Marga, Jenis) | ITIS | CoL | WoRMS | Cloffa

Ikan bertulang rawan (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Somniosidae (Sleeper sharks)
Etymology: Somniosus: Latin for sleepy, reflecting Lesueur’s surmise that these sharks are slow or sluggish because of their relatively small fins (hence the name sleeper sharks) (See ETYFish); pacificus: -icus (L.), belonging to: the Pacific Ocean (specifically, the North Pacific), where it occurs (also in Arctic Ocean) (See ETYFish).

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

laut bentopelagis; kisaran kedalaman 0 - 2205 m (Ref. 119696). Boreal; 72°N - 23°N, 121°E - 110°W

Penyebaran Negara-negara | Daerah-daerah FAO | Ecosystems | Kemunculan | Point map | Introduksi | Faunafri

North Pacific and Arctic: Taiwan to Japan and Kuril Islands, Sea of Okhotsk, southeastern Kamchatka, Commander and Aleutian Islands, and southern Baja California to Gulf of Alaska, Bering Sea, Chukchi Sea and Beaufort Sea.

Size / Weight / umur

Maturity: L_m ? range ? - ? cm
Max length : 440 cm TL jantan/; (Ref. 247); 430.0 cm TL (female)

deskripsi pendek Kunci identifiaksi (pengenalan) | Morfologi | Morfometrik

Duri punggung (Keseluruhan (total)) : 0; Duri dubur: 0. Diagnosis: Somniosus pacificus differs from S. antarcticus by the following characters: interdorsal space about 70% of prebranchial length (vs. 80%); height of first dorsal fin about 3.7% of precaudal length (PCL) (vs. 3.0%); height of second dorsal fin about 3.4% of PCL (vs. 2.9%); number of turns in spiral valve 32-37 (mode 33) (vs. 36-41, mode 39); precaudal vertebrae 28-30 (mode 29) (vs. 30-31, mode 30) (Ref. 50224).

Demersal and mesobenthopelagic (Ref. 119696); found on continental shelves and slopes (Ref. 247). At high latitudes, occasionally occurs in littoral and even intertidal areas; in lower latitudes it may never come to the surface and ranges down to at least 2,000 m (Ref. 247), reported to about 2,205 m in the Hawaiian Is. as recorded by camera arrays (Ref. 119696). Feeds on bottom animals such as fishes, octopi, squids, crabs and tritons; also harbor seals and carrion (Ref. 247). Ovoviviparous (Ref. 205), with 300 pups in a litter (Ref. 247), length at birth about 42 cm or less (Ref. 26346). The flesh contains a type of toxin which, when eaten, produces symptoms of drunkenness (Ref. 583). Possibly reaches lengths greater than 700 cm (Ref. 247). It is of limited importance in fisheries, with older small-scale commercial harvests reported in southern areas; and based on its population dynamics it can be sensitive to overfishing (Ref. 117245).

Life cycle and mating behavior Kematangan | Reproduksi, perkembang biakan | Pemijahan | telur-telur | Fecundity | Larva

Probably ovoviviparous (Ref. 247). Size at birth 42 cm or less (Ref. 26346). Distinct pairing with embrace (Ref. 205).

rujukan utama Upload your references | Acuan | Koordinator | mitra

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. (Ref. 50224)

Status IUCN Red List (Ref. 130435: Version 2024-2)

hampir terancam (NT) (A2bd); Date assessed: 29 August 2019

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

ancaman kepada manusia

Harmless (Ref. 6871)

penggunaan manusia

Perikanan: tidak ada kepentingan

FAO - Perikanan: landings; Publication: search | FIRMS - Stock assessments | FishSource | Sea Around Us

informasi lanjut

Trophic ecology
Bahan makanan
Komposisi makanan
Konsumsi makanan
Food rations
Pemangsa

Ecology
Ekologi

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
ukuran frekuensi
Mass conversion
pemulihan
Kelimpahan

Life cycle
Reproduksi, perkembang biakan
Kematangan
Maturity/Gills rel.
Fecundity
Pemijahan
Spawning aggregations
telur-telur
pekembangan telor
Larva
Dinamika larva

Distribution
Negara-negara
Daerah-daerah FAO
Ecosystems
Kemunculan
Introduksi
BRUVS - Videos

Anatomy
Area insang
Brain
Otolith

Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

Genetics
Genetika
Heterozygosity
Diturunkan

Human related
Aquaculture systems
profil budidaya air
Strain
Ciguatera cases
Stamps, coins, misc.

Outreach
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Taxonomy
Nama-nama umum
Sinonim (persamaan)
Morfologi
Morfometrik
Gambar

References
Acuan

Alat, peralatan

laporan khas

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ringkasan halaman | Point data | Nama-nama umum | fotos/gambar

Sumber internet

Estimates based on models

Preferred temperature (Ref. 123201): 0.5 - 4.5, mean 2.3 °C (based on 400 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5313 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00575 (0.00319 - 0.01039), b=3.10 (2.95 - 3.25), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).

Trophic level (Ref. 69278): 4.4 ±0.4 se; based on diet studies.

Daya lenting (Ref. 120179): Rendah, Waktu penggandaan populasi minimum 4.5 - 14 tahun (Fec=300; assuming tm<=10).

Fishing Vulnerability (Ref. 59153): Very high vulnerability (90 of 100).

Climate Vulnerability (Ref. 125649): Moderate vulnerability (38 of 100).

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