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Hemipristis elongata (Klunzinger, 1871)

Snaggletooth shark
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Hemipristis elongata   AquaMaps   Data sources: GBIF OBIS
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Hemipristis elongata
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Maldives country information

Common names: [No common name]
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/mv.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Randall, J.E. and C. Anderson, 1993
National Database:

Common names from other countries

Elliot's grey shark, Fossil shark, 钝吻鲨, ... more

分類 / Names 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa

板鰓亜鋼(サメとエイ類) (sharks and rays) > Carcharhiniformes (Ground sharks) > Hemigaleidae (Weasel sharks)
Etymology: Hemipristis: hemi-, from hemisys (Gr.), half; pristis, from pristes (Gr.), sawyer (but here meaning saw), allusion not explained, possibly referring to how marginal serrations of teeth of H. serra (type species, a fossil) do not extend over the entire length of each tooth. (See ETYFish);  elongata: Latin for prolonged, referring to its long and slim body. (See ETYFish).
  More on author: Klunzinger.

Environment: milieu / climate zone / depth range / distribution range 生態学

海 底生の; 深さの範囲 1 - 130 m (Ref. 6871).   Tropical; 41°N - 34°S, 12°E - 156°E (Ref. 6871)

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | Faunafri

Indo-West Pacific: Red Sea and southeast Africa, including Persian Gulf (Ref. 68964) to Philippines, north to China, south to Australia.

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm ?, range 120 - ? cm
Max length : 240 cm TL オス/雌雄の選別がない; (Ref. 5578); common length : 200 cm TL オス/雌雄の選別がない; (Ref. 13567)

簡単な記述 検索表 | 形態学 | 形態計測学

背面の脊椎 (合計) : 0; 肛門の骨: 0. A slender weasel shark with a long, broadly rounded snout, large curved, saw-edged teeth in the upper jaw, and hooked lower teeth protruding from mouth; gill slits long; fins strongly curved (Ref. 5578). Light grey or bronzy with no prominent markings (Ref. 5578).

生物学     用語集 (例 epibenthic)

A coastal species, found inshore and offshore on the continental and insular shelves (Ref. 244). Feeds on sharks, rays and bony fishes (Ref. 244); also cephalopods (Ref. 13567). Viviparous (Ref. 50449). Thought to be potentially dangerous because of its large, fearsome teeth and shallow-water habitat, but has not been recorded in an attack on people (Ref. 244). Caught regularly by inshore gillnet, bottom trawl (occasionally) and longline fisheries (Ref.58048). Regularly taken in artisanal fisheries (Ref. 13567). Utilized fresh for human consumption, liver processed for vitamins, fins used in the oriental shark fin trade, and by-products processed into fishmeal (Ref. 244). Most adults below 200 cm (Ref. 30573).

Life cycle and mating behavior Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 幼生

Viviparous, with 2 to 11 young in a litter (Ref. 6871) after a gestation period of 7-8 months; possibly reproduces in alternate years (Ref.58048). Size at birth about 45-52 cm TL (Ref. 13567, Ref.58048). Distinct pairing with embrace (Ref. 205).

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

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のレッドリストの状況は (Ref. 130435)

  攻撃されやすい (VU) (A2bd+3bd); Date assessed: 20 February 2015

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Traumatogenic (Ref. 5213)




Human uses

水産業: 商業
FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 23.8 - 29, mean 27.9 (based on 2110 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 1.0039   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00147 - 0.00899), b=3.07 (2.86 - 3.28), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.3   ±0.3 se; based on diet studies.
回復力 (Ref. 120179):  非常に低い, １４年以上の倍増期間の最小個体群 (Fec=2).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (90 of 100).
価格帯 (Ref. 80766):   Unknown.