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Lamna ditropis Hubbs & Follett, 1947

Salmon shark
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Native range | All suitable habitat | Point map | Year 2050
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Lamna ditropis   AquaMaps   Data sources: GBIF OBIS
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Lamna ditropis
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Japan country information

Common names: Nezumizame
Occurrence: native
Salinity: marine
Abundance: common (usually seen) | Ref: Sokolovskaya, T.G., A.S. Sokolovskii and E.I. Sobolevskii, 1998
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Occurs in northern Japan. Also occurs in Peter the Great Bay, Sea of Japan (Ref. 27683). Also Ref.11634, 43278, 96339, 43939.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ja.html
National Fisheries Authority: http://www.maff.go.jp/eindex.html
Occurrences: Occurrences Point map
Main Ref: Sokolovskaya, T.G., A.S. Sokolovskii and E.I. Sobolevskii, 1998
National Database:

Common names from other countries

Requin-taupe saumon, Marrajo salmón, Porbeagle, ... 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) > Lamniformes (Mackerel sharks) > Lamnidae (Mackerel sharks or white shark)
Etymology: Lamna: From the Greek lamia, a large and voracious shark, originally from Lamia in Greek mythology, daughter of King Belos, who revenged the murder of her children by killing the children of others, and who behaved so cruelly that her face turned into a nightmarish mask. (See ETYFish);  ditropis: di-, from dis (L.), in two; tropis (Gr.), keel, i.e., double-keeled, referring to the rudder-like projections on either side of tail. (See ETYFish).
  More on authors: Hubbs & Follett.

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

海; 海洋回遊性 (Ref. 51243); 深さの範囲 0 - 650 m (Ref. 50550), usually 0 - 152 m (Ref. 55221).   Boreal; 66°N - 22°N, 120°E - 115°W

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North Pacific: Japan, Korea, and the Sea of Okhotsk to the Bering Sea and southward to southern California, USA (Ref. 247) and Baja California, Mexico (Ref. 9253).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm ?  range ? - 221 cm
Max length : 305 cm TL オス/雌雄の選別がない; (Ref. 247); common length : 180 cm TL オス/雌雄の選別がない; (Ref. 9988); 最大公表体重: 175.0 kg (Ref. 9988); 最大記録サイズ: 27 年 (Ref. 119696)

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. First dorsal fin uniformly dark, no light rear tip; ventral surface of body white with dusky blotches (Ref. 247).

生物学     用語集 (例 epibenthic)

A coastal-littoral and epipelagic shark that prefers boreal to cool temperate waters, from the surface to at least 152 m, and is common in continental offshore waters but range inshore to just off beaches. Occurs singly or in schools or feeding aggregations of several individuals; feeds on fishes (Ref. 247). Seasonally migratory (following food prey) and segregate by age and sex where adults move further north than young (Ref. 58085). Ovoviviparous, embryos feeding on yolk sac and other ova produced by the mother (Ref. 50449). With up to 4 young in a litter (Ref. 247). Fast swimmer (Ref. 9988). Potentially dangerous but has never or seldom been implicated in human attacks (Ref. 247). Causes considerable damage to commercial catches and gear (Ref. 6885). Utilized fresh, dried or salted, and frozen; fins, hides and livers are also used, with fins having particular value; can be broiled and baked (Ref. 9988). Reported to attain at least 27 years of age and reach maximum depth of at least 792 m (in Ref. 119696).

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

Exhibit ovoviparity (aplacental viviparity), with embryos feeding on other ova produced by the mother (oophagy) after the yolk sac is absorbed (Ref. 50449). Litter size is up to 4 young (Ref. 247). 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 : Compagno, Leonard J.V. | 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 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)

IUCNのレッドリストの状況は (Ref. 130435)

  軽度懸念 (LC) ; Date assessed: 06 November 2018

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

人間に対する脅威

  Traumatogenic




Human uses

水産業: 少数商業の; ゲームフィッシュ: はい
FAO(水産業: 種の外形; publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 1.7 - 8.7, mean 4.7 (based on 832 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.7813   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00405 - 0.02151), b=3.04 (2.84 - 3.24), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  4.5   ±0.80 se; based on food items.
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=4).
Fishing Vulnerability (Ref. 59153):  High vulnerability (59 of 100).
価格帯 (Ref. 80766):   Unknown.