Alosa immaculata Bennett, 1835
Pontic shad
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| Native range | All suitable habitat | Point map | Year 2050 |
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| This map was computer-generated and has not yet been reviewed. |
| Alosa immaculata AquaMaps Data sources: GBIF OBIS |
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Alosa immaculata
画像によって Kutsarov, Y.
画像 | 切手、コイン、その他 | グーグルの画像
画像によって Kutsarov, Y.
分類 / 名前 共通名の | 類義語 | Catalog of Fishes(部類, 種) | ITIS | CoL | WoRMS | Cloffa
> Clupeiformes (Herrings) > Alosidae (Shads and Sardines)
Etymology: Alosa: Latin, alausa = a fish cited by Ausonius and Latin, halec = pickle, dealing with the Greek word hals = salt; it is also the old Saxon name for shad = "alli" ; 1591 (Ref. 45335).
More on author: Bennett.
Etymology: Alosa: Latin, alausa = a fish cited by Ausonius and Latin, halec = pickle, dealing with the Greek word hals = salt; it is also the old Saxon name for shad = "alli" ; 1591 (Ref. 45335).
More on author: Bennett.
環境：環境 / 気候帯 / 深さの範囲 / 分布範囲 生態学
海; 新鮮な水; 汽水性の pelagic-neritic; 昇流魚 (Ref. 138126); 深さの範囲 3 - 90 m (Ref. 10439). Temperate; 50°N - 41°N, 27°E - 44°E
分布 領土 | 国連食糧農業機関の区域 | エコシステム | 事件 | 目的のマップ | 導入 | Faunafri
Eurasia: Black Sea and Sea of Azov ( in sea and in the Don, Danube and other rivers, as much as 567 km up the Don and as far as Kiev on the Dneiper before the dam was built). Recognized sub-species (Ref. 683): Alosa pontica pontica in the Black Sea and rivers feeding it; Alosa pontica kessleri and Alosa pontica volgensis in the Caspian Sea.
サイズ / 重さ / 年齢
成熟: Lm ? range ? - 23.4 cm
Max length : 39.0 cm SL オス/雌雄の選別がない; (Ref. 188); 最大記録サイズ: 7 年 (Ref. 10439)
Max length : 39.0 cm SL オス/雌雄の選別がない; (Ref. 188); 最大記録サイズ: 7 年 (Ref. 10439)
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. Body fairly elongate, more `herring-like' than `shad-like'. Gill rakers rather thin, usually equal to or a little shorter than gill filaments. Teeth well developed in both jaws. Resembles A. caspia, which usually has more Gill rakers (50 to 180, much longer than gill filaments), poorly developed teeth and a deeper, `shad-like' body; A. maeotica has fewer Gill rakers (33 to 36).
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Body shape (shape guide): fusiform / normal; Cross section: compressed.
Thai species is pelagic at sea, in deep water. It migrates to middle reaches of large rivers, spawning where current is strongest, close to the surface, often at 2-3 m depth in the main channel. Migrates upriver to spawn at 3 years, rarely earlier and only a few individuals spawn two seasons. It appears along the coast in March to April, enters rivers when temperatures reach about 6-9°C, between late March and late April; migration usually peaks in May. Spawning starts when temperature rises above 15°C in April to August; usually between 1 and 8 p.m. Pelagic eggs. Spent individuals return to the sea to feed. Juveniles inhabit floodplain and shallow riverine habitats, migrate to the sea or estuarine habitats during first summer; in autumn return to the sea until maturity. When at sea, it feeds on a wide variety of zooplankton (mainly crustaceans, (Crangon, Upogebia, Idothea, gammarids) and small fish (Engraulis, Clupeonella, Sprattus). Reduction of spawning sites and migration routes are caused by impoundment of main rivers. Heavy over fishing apparently reduced all populations during the first decade of the 20th century (Ref. 59043). Reaches a smaller size (30 cm SL, usually 14-18) in Don River; a smaller form reaches only 21 cm.
ライフサイクルと交尾行動 成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
Eggs are pelagic (Ref. 59043).
主な参考文献
参考文献のアップロード | 参考文献 | コーディネーター | 協力者
Kottelat, M., 1997. European freshwater fishes. An heuristic checklist of the freshwater fishes of Europe (exclusive of former USSR), with an introduction for non-systematists and comments on nomenclature and conservation. Biologia, Bratislava, 52/Suppl. 5:1-271. (Ref. 13696)
CITES
Not Evaluated
人間に対する脅威
Harmless
人間の用途
水産業: 少数商業の
FAO - 水産業: 着陸; Publication: search | FishSource | 私達の周りの海
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インターネットの情報源
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モデルに基づく推定値
好ましい温度 (参照 123201): 8.6 - 14.8, mean 13.3 °C (based on 68 cells).
系統多様性指数 (参照 82804): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00741 (0.00616 - 0.00892), b=3.08 (3.04 - 3.12), in cm total length, based on LWR estimates for this species (Ref. 93245).
栄養段階 (参照 69278): 4.0 ±0.6 se; based on diet studies.
回復力 (参照 120179): 手段, １．４年～４．４年の倍増期間の最小個体群 (K=0.32; tm=2; tmax=9).
栄養素 (Ref. 124155): Calcium = 14.6 [7.1, 77.2] mg/100g; Iron = 0.56 [0.23, 1.34] mg/100g; Protein = 19.6 [17.1, 22.4] %; Omega3 = 1.44 [0.75, 2.79] g/100g; Selenium = 9.61 [4.44, 21.22] μg/100g; VitaminA = 17.7 [4.5, 66.4] μg/100g; Zinc = 0.335 [0.208, 0.588] mg/100g (wet weight); based on nutrient studies.