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Scymnodon ringens Barbosa, du, Bocage, de, Brito & Capello, 1864

Knifetooth dogfish
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Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Scymnodon ringens   AquaMaps   Data sources: GBIF OBIS
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Image of Scymnodon ringens (Knifetooth dogfish)
Scymnodon ringens
Picture by Serrano, A.

Portugal country information

Common names: Arreganhada
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Museum: BMNH 1867.7.23.3 (holotype, off Portugal).
National Checklist: Portugal
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/po.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Compagno, L.J.V., 1984
National Database: Portuguese Freshwater Fishes

Common names from other countries

Squale-grogneur commun, Bruja, كلب البحر ذو أسنان حادَّة, ... more

分類 / Names 俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii 板鰓亞綱 (鯊魚與魟魚) (sharks and rays) > Squaliformes (Sleeper and dogfish sharks) > Somniosidae (Sleeper sharks)
Etymology: Scymnodon: scymnus, an ancient name for some kind of shark, derived from a Greek word meaning young animal, cub or whelp; odon (Gr.), tooth, referring to large, triangular cutting teeth on lower jaw of S. ringens. (See ETYFish);  ringens: Latin for gaping, referring to its large, open mouth (“ore amplo, hiante”). (See ETYFish).

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

海洋 深海區的; 深度上下限 200 - 1600 m (Ref. 247), usually 550 - 1450 m (Ref. 10717).   深水域; 61°N - 54°S, 18°W - 172°W

分布 國家 | FAO區域 | 生態系 | 發現紀錄 | Point map | 簡介 | Faunafri

Eastern Atlantic: along the slope from Scotland to Spain, Portugal, Senegal. Southwest Pacific: New Zealand (Ref. 26346).
東大西洋: 沿著蘇格蘭到西班牙的斜坡，葡萄牙，塞內加爾。 西南太平洋: 紐西蘭.(參考文獻 26346)

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 110 cm TL 雄魚/尚未辨別雌雄; (Ref. 247)

簡短描述 檢索表 | 型態特徵 | 形態測量圖

臀棘: 0. Black in color; small dorsal fin spines; short snout; small lanceolate teeth without cusplets in upper jaw and huge high, knife-cusped cutting teeth in lower jaw; mouth very wide and broadly arched; caudal fin with weak subterminal notch and no lower lobe (Ref. 247).
黑色的; 小的背鰭棘; 短的吻; 小的矛尖形的在上頜中牙齒沒有 cusplets 與非常高的, 在下頜中的尖端刀狀的銳利齒; 嘴非常寬與寬廣弓形; 尾鰭有弱的接近端位的凹槽與沒有下葉。 (參考文獻 247)

生物學特性     字彙 (例如 epibenthic)

A rare species (Ref. 26346) inhabiting continental slopes (Ref. 247). Usually mesopelagic although taken most often near the bottom (Ref. 10717). Its razor-edged lower teeth is used to attack and dismember large prey (Ref. 247). Ovoviviparous (Ref. 205). Utilized dried salted for human consumption and for fishmeal (Ref. 247).

一個稀有的種 (參考文獻 26346) 居住於大陸斜坡.(參考文獻 247) 通常中層帶雖然在底部的附近最時常採.(參考文獻 10717) 它的剃刀口般下顎齒被用來攻擊而且肢解大的獵物。 (參考文獻 247) 卵胎生的.(參考文獻 205) 乾燥鹽醃利用供人類消費與用於魚粉.(參考文獻 247)

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

Probably ovoviviparous (Ref. 247). Distinct pairing with embrace (Ref. 205).東大西洋: 沿著蘇格蘭到西班牙的斜坡，葡萄牙，塞內加爾。 西南太平洋: 紐西蘭.(參考文獻 26346)

主要參考資料 Upload your references | 參考文獻 | 合作者 | 合作者

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

IUCN 瀕危狀態 (Ref. 130435)

  次級保育類動物, 見 IUCN 紅皮書 (VU) (A2bd); Date assessed: 21 November 2019

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  引起創傷的




人類使用

漁業: 低經濟
FAO(漁業: 產生; publication : search) | FishSource | 周邊海洋

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Estimates based on models

Preferred temperature (Ref. 115969): 4.2 - 11.4, mean 7.7 (based on 164 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00178 - 0.00849), b=3.13 (2.94 - 3.32), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
營養階層 (Ref. 69278):  3.9   ±0.7 se; based on diet studies.
回復力 (Ref. 120179):  低的, 最小族群倍增時間4.5 - 14 年 (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (66 of 100).
Climate Vulnerability (Ref. 125649):  Moderate to high vulnerability (46 of 100).
價格種類 (Ref. 80766):   Unknown.