Huso dauricus, Kaluga : fisheries

Huso dauricus (Georgi, 1775)

Kaluga
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Huso dauricus
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条鰭類 > Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Huso: Latin, huso = swine (Ref. 45335).

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

; 海; 新鮮な水; 汽水性の 底生の; 昇流魚 (Ref. 51243); 深さの範囲 0 - 50 m (Ref. 50550).   Temperate; 10°C - 20°C (Ref. 2059); 55°N - 43°N

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Asia: Amur basin, ascending far up to the Argun, Shilka, and Onon. In the Amur Liman to the Amur estuary in the Sea of Okhotsk. Adults inhabit some lakes, like Orel Lake above Nikolaevsk. Also in the Ussuri and Sungari, China. International trade restricted (CITES II, since 1.4.98; CMS Appendix II). Four populations are recognized in the Amur River basin: one lives in the estuary and coastal brackish waters of the Sea of Okhotsk and Sea of Japan, second is found in the lower Amur, third in the middle Amur, and fourth in the lower reaches of the Zeya and Bureya rivers in the Russian river banks (Ref. 40142). Two ecological morphs are present in the estuary population, the 'freshwater' and the 'brackish' water forms (Ref. 40142).

Length at first maturity / サイズ / 重さ / 年齢

Maturity: Lm ?, range 170 - 190 cm
Max length : 560 cm TL オス/雌雄の選別がない; (Ref. 40142); 最大公表体重: 1.0 t (Ref. 40142); 最大記録サイズ: 80 年 (Ref. 56448)

簡単な記述 形態学 | 形態計測学

背面の脊椎 (合計): 0; 背鰭 (合計): 43-57; 肛門の骨 0; 臀鰭: 26 - 35. Gill membranes free from isthmus and broadly connected with each other. Barbels flat, attached on ventral side of snout. Body shields in 5 rows; dorsal shields 10 to 16, lateral 32 to 46 and ventral 8 to 12.

生物学     用語集 (例 epibenthic)

Adults inhabit rivers and lakes. Adults do not spawn every year but at least every other year. With increasing age, the spawning interval increases to three, four and more years (Ref. 593). Feed on invertebrates in the first year then switch to juveniles of pelagic fishes, e.g., Oncorhynchus keta, at age 3 to 4 yrs., kaluga feed on adult fishes (Ref. 40142).

Life cycle and mating behavior 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

Males spawn once in three to four years while females do every four to five years (Ref. 40142). Water temperature affects the onset of maturity of females. Females spawn a year earlier during warm years than they would during cold years (Ref. 40142).

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

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のレッドリストの状況は (Ref. 123251)

  絶滅寸前の危機的状況 (CR) (A2bd); Date assessed: 24 October 2009

CITES (Ref. 118484)


人間に対する脅威

  Harmless





Human uses

水産業: 商業
FAO(水産業: 種の外形; publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00204 (0.00118 - 0.00354), b=3.18 (3.03 - 3.33), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
栄養段階 (Ref. 69278):  4.5   ±0.4 se; based on diet studies.
Generation time: 36.6 ( na - na) years. Estimated as median ln(3)/K based on 1 growth 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 (tm=14-23; tmax=55; Fec=600,000).
弱み (Ref. 59153):  Very high vulnerability (88 of 100) .
価格帯 (Ref. 80766):   Unknown.