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Salmo ischchan Kessler, 1877

Sevan trout
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Salmo ischchan
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Kazakhstan country information

Common names: Sevan trout
Occurrence: introduced
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Introduced in Lake Balkhash (Ref. 41038).
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/kz.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Mitrofanov, V.P. and T. Petr, 1999
National Database:

Common names from other countries

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

Teleostei > Salmoniformes (Salmons) 鮭形目 (Salmons) > Salmonidae (Salmonids) 鮭科 (Salmonids) > Salmoninae
Etymology: Salmo: Latin, salmo, Plinius = salmon (Ref. 45335).

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

; 淡水 居於水底的.   溫帶; 41°N - 40°N, 44°E - 46°E

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

Former USSR: Armenia, Lake Sevan.
前蘇聯: 亞美尼亞,湖 Sevan。

大小 / 重量 / 年齡

Maturity: Lm ?  range ? - ? cm
Max length : 104 cm TL 雄魚/尚未辨別雌雄; (Ref. 593); common length : 33.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 593); 最大體重: 17.0 kg (Ref. 593)

生物學特性     字彙 (例如 epibenthic)

The adults spawn in the lake proper at a depth range of 0.5 to 3 m, over fine gravel. Two spawning stocks are known: one spawns in the northwestern corner of the lake from the beginning of November till the end of December; the other spawns at the southeastern corner, from the middle or the end of January till the end of March. This fish approaches the coast twice a year: from April till July and from October till December. In mid winter and at the end of summer, it leaves the coasts to stay at greater depth. Adults feed exclusively on sand hoppers (Amphipoda) (Ref. 593).

成魚在 0.5 到 3 公尺的深度範圍完全地產卵於湖中, 在細砂礫之上。 二個產卵的品系被知道: 一直到十二月底在來自十一月的起點的湖的西北角中產卵; 另一個在東南方的角落產卵, 從直到三月底的一月中或一月底。 這一個魚一年兩次接近海岸: 從四月直到七月與從十月直到十二月。 在冬季中期而在夏天底,它離開岸邊到停留在較大的深度。 成魚只吃沙蟲 (片腳類動物) 。 (參考文獻 593)

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

Needs better reference.前蘇聯: 亞美尼亞,湖 Sevan。

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

Berg, L.S., 1962. Freshwater fishes of the U.S.S.R. and adjacent countries. volume 1, 4th edition. Israel Program for Scientific Translations Ltd, Jerusalem. (Russian version published 1948). (Ref. 593)

IUCN 瀕危狀態 (Ref. 130435)

  極危 (CR) (B2ab(i,ii,iii,iv)); Date assessed: 06 February 2014

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

對人類具威脅

  無害處的




人類使用

漁業: 商業性; 游釣魚種: 是的
FAO(Publication : search) | FishSource |

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網路資源

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00488 - 0.02245), b=3.03 (2.86 - 3.20), in cm Total Length, based on LWR estimates for this Genus-body shape (Ref. 93245).
營養階層 (Ref. 69278):  3.3   ±0.53 se; based on food items.
回復力 (Ref. 120179):  中等的, 族群倍增時間最少 1.4 - 4.4年 (Assuming tm=3-4).
Fishing Vulnerability (Ref. 59153):  High vulnerability (62 of 100).
價格種類 (Ref. 80766):   Very high.