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Heptranchias perlo (Bonnaterre, 1788)

Sharpnose sevengill shark
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Native range | All suitable habitat | Point map | Year 2050
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Heptranchias perlo   AquaMaps   Data sources: GBIF OBIS
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Image of Heptranchias perlo (Sharpnose sevengill shark)
Heptranchias perlo
Picture by Vaske Jr., T.


Seychelles country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs in Aldabra (Ref. 247). Also Ref. 53568.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/se.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database:

Common names from other countries

Classification / Names Tên thường gặp | Các synonym ( Các tên trùng) | Catalog of Fishes(Giống, Các loài) | ITIS | CoL | WoRMS | Cloffa

Lớp phụ Cá sụn (cá mập và cá đuối) (sharks and rays) > Hexanchiformes (Frill and cow sharks) > Hexanchidae (Cow sharks)
Etymology: Heptranchias: hept[a] (Gr.), seven; ranchias, etymology unclear, possibly a variant spelling of anchos (Gr.), gill, possibly with the addition of -ias, borrowed from karkharías, ancient Greek for shark (cf. Carcharias Rafinesque 1810), referring to how the seven gill openings extend down onto the throat. (See ETYFish);  perlo: From the French vernacular “Le Perlon,” pearl, probably referring to its smooth and grayish (“lisse & grisâtre”) skin. (See ETYFish).
  More on author: Bonnaterre.

Environment: milieu / climate zone / depth range / distribution range Sinh thái học

Biển Tầng đáy biển sâu; Mức độ sâu 0 - 1000 m (Ref. 41394), usually 180 - 450 m (Ref. 45445).   Deep-water; 58°N - 58°S, 98°W - 173°W

Sự phân bố Các nước | Các khu vực của FAO | Các hệ sinh thái | Những lần xuất hiện | Point map | Những chỉ dẫn | Faunafri

Circumglobal in tropical and temperate seas, excluding the northeast Pacific (Ref. 13573). Western Atlantic: North Carolina, USA and northern Gulf of Mexico to Cuba, then from Venezuela to Argentina (Ref. 6871). Eastern Atlantic: Morocco to Namibia, including the Mediterranean Sea (Ref. 247). Indian Ocean: southwestern India, Aldabra Island, southern Mozambique, and South Africa (Ref. 247). Western Pacific: Japan to China, Indonesia, Australia and New Zealand. Southeast Pacific: off northern Chile (Ref. 247).

Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age

Maturity: Lm 87.7, range 75 - 98 cm
Max length : 137 cm TL con đực/không giới tính; (Ref. 247); 140.0 cm TL (female); common length : 100.0 cm TL con đực/không giới tính; (Ref. 26999)

Short description Khóa để định loại | Hình thái học | Sinh trắc học

Các tia vây lưng cứng (tổng cộng) : 0; Tia cứng vây hậu môn: 0; Động vật có xương sống: 125 - 161. A narrow-headed, big-eyed small seven-gilled shark (Ref. 247). Body fusiform and slender; dorsal fin small, originating over inner margins of pelvic fins; anal fin small (Ref. 6871). Teeth wide, low and comb-shaped (Ref. 6871). Brownish grey above, paler below, sometimes with indistinct dark blotches on body; juveniles with dark-tipped dorsal and caudal fins, adults with light fin margins (Ref. 5578, 6574, 6871). Live specimens with fluorescent green eyes (Ref. 6871).

Sinh học     Tự điển (thí dụ epibenthic)

Found on the outer continental and insular shelves and upper slopes in depths of 100 to 400 (Ref. 13573, 11230), also inshore and down to 1,000 m (Ref. 6871, 11230). Feeds on small sharks and rays, small bony fish, shrimps, crabs, lobsters, squid, and cuttlefish (Ref. 5578). Ovoviviparous (Ref. 205), with 9-12 young born per litter (Ref. 247). Very active and aggressive when captured and quick to bite but too small to be very dangerous to people (Ref. 247). Liver utilized as a source of oil. Maximum length may reach 214 cm, but this is uncertain.

Life cycle and mating behavior Maturities | Sự tái sinh sản | Spawnings | Egg(s) | Fecundities | Ấu trùng

Ovoviviparous, number of young 9 to 20 in a litter (Ref. 247). Size at birth about 25 cm (Ref. 6871). Distinct pairing with embrace (Ref. 205). No apparent seasonality in its reproduction cycle (Ref.58048).

Main reference Upload your references | Các tài liệu tham khảo | Người điều phối : Compagno, Leonard J.V. | Người cộng tác

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 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

IUCN Red List Status (Ref. 130435)

  Near Threatened (NT) (A2bd); Date assessed: 21 November 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Poisonous to eat (Ref. 4690)




Human uses

Các nghề cá: buôn bán nhỏ
FAO(Các nghề cá: species profile; publication : search) | FishSource | Biển chung quanh ta

Thêm thông tin

Trophic ecology
Các loại thức ăn
Diet compositions
Food consumptions
Food rations
Các động vật ăn mồi
Ecology
Sinh thái học
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Sự tái sinh sản
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Ấu trùng
Sự biến động ấu trùng
Anatomy
Gill areas
Não bộ
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Dạng bơi
Swimming speeds
Visual pigment(s)
Âm thanh của cá
Diseases / Parasites
Toxicities (LC50s)
Genetics
Di truyền
Electrophoreses
Heritabilities
Human related
Aquaculture systems
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Các giống
Ciguatera cases
Stamps, coins, misc.

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Estimates based on models

Preferred temperature (Ref. 115969): 8.5 - 18.7, mean 12.5 (based on 1162 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0781   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00224 (0.00162 - 0.00309), b=3.10 (3.01 - 3.19), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Mức dinh dưỡng (Ref. 69278):  4.2   ±0.4 se; based on diet studies.
Thích nghi nhanh (Ref. 120179):  Rất thấp, thời gian nhân đôi của chủng quần tối thiểu là hơn 14 năm (Fec=9).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (84 of 100).
Climate Vulnerability (Ref. 125649):  Moderate vulnerability (43 of 100).
Price category (Ref. 80766):   Unknown.