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Heptranchias perlo (Bonnaterre, 1788)

Sharpnose sevengill shark
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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 ຊື່ສາມັນ | ຄຳສັບຄ້າຍຄືກັນ | Catalog of Fishes(ຕະກຸນ, ຊະນິດ) | ITIS | CoL | WoRMS | Cloffa

ກຸ່ມປາກະດູກອ່ອນ (ເຊັ່ນ: ປາສະຫລາມ, ປາຜາໄລ) (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 ນິເວດວິທະຍາ

ສັດທະເລ ກ່ຽວກັບ(ຢູ່)ຊັ້ນນ້ຳໃນທະເລທີ່ເໜີອພື້ນດິນ; ລະດັບຄວາມເລິກ 0 - 1000 m (Ref. 41394), usually 180 - 450 m (Ref. 45445).   Deep-water; 58°N - 58°S, 98°W - 173°W

ການແຜ່ກະຈາຍ ປະເທດ | ເຂດ FAO | ລະບົບນິເວດ | ການປະກົດຕົວ | Point map | ການແນະນຳ | 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 / ຂະໜາດ / ນ້ຳໜັກ / Age

Maturity: Lm 87.7, range 75 - 98 cm
Max length : 137 cm TL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 247); 140.0 cm TL (female); common length : 100.0 cm TL ຕົວຜູ້/ບໍ່ມີເພດ; (Ref. 26999)

Short description ຕົວທີ່ໃຊ້ໃນການຈຳແນກຊະນິດ | ສະລີລະວິທະຍາ | ການວັດແທກຮູບຮ່າງລັກສະນະພາຍນອກຂອງດິນ,ສັດ,ປາ…

ຄີ (ໜາມ)ແຂງຢູ່ຫຼັງປາ (ທັງໝົດ) : 0; ຄີ(ໜາມ) ແຂງຢູ່ຄີກົ້ນປາ ກຸ່ມປາກະດູກແຂງ ຄວາມຖີ່ຂອງກຸ່ມຖ່າຍທອດພັນ ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລໄປຫານ້ຳຈືດ ແລະນ້ຳຈືດຫາທະເລ ປາທີ່ມີການເຄື່ອນຍ້າຍຈາກທະເລແລະໄປໄຂ່ຢູ່ນ້ຳຈືດ ຄີກົ້ນຂອງປາ ສັດທີ່ມີກະດູກສັນຫັຼງ ການຖ່າຍທອດທາງກຳມະພັນຈາກພໍ່ແມ່ຫາລູກ: 0; ສັດທີ່ມີກະດູກສັນຫຼັງ: 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).

ຊີວະສາດ     ຄຳແປສັບ (ຕ.ຢ. 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 | ການສືບພັນ | Spawnings | Egg(s) | Fecundities | ຕົວອ່ອນ

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 | ເອກະສານອ້າງອີງ | ຜູ້ປະສານງານ : Compagno, Leonard J.V. | ຜູ້ຮ່ວມມື

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

ການປະມົງ: ທີ່ເປັນການຄ້າໜ້ອຍ

ຂໍ້ມູນຕື່ມອີກ

Trophic ecology
ລາຍການອາຫານ
Diet compositions
Food consumptions
Food rations
ຜູ້ລ້າ
Ecology
ນິເວດວິທະຍາ
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
ການສືບພັນ
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
ຕົວອ່ອນ
ການປ່ຽນແປງຂອງຕົວອ່ອນ
Anatomy
Gill areas
ສະໝອງ
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
ປະເພດການລອຍ
Swimming speeds
Visual pigment(s)
ສຽງຂອງປາ
Diseases / Parasites
Toxicities (LC50s)
Genetics
ກຳມະພັນ
Electrophoreses
Heritabilities

ເຄື່ອງມື

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ແຫຼ່ງອີນເຕີເນັດ

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).
ຊັ້ນເຂດຮ້ອນ (Ref. 69278):  4.2   ±0.4 se; based on diet studies.
ຄວາມຢືດຢຸ່ນ (Ref. 120179):  ຕຳ່ຫຼາຍ, ປະຊາກອນຕຳ່ສຸດທີ່ໃຊ້ເວລາສອງເທົ່າຫຼາຍກວ່າ 14 ປີ (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.