Huso dauricus, Kaluga : fisheries

Huso dauricus (Georgi, 1775)

Kaluga
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Huso dauricus
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Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (Straalvinnigen) > Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Huso: Latin, huso = swine (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Ecologie

; marien; zoetwater; brakwater demersaal; anadroom (Ref. 51243); diepteverspreiding 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 / Size / Gewicht / Leeftijd

Maturity: Lm ?, range 170 - 190 cm
Max length : 560 cm TL mannelijk/geslacht niet bekend; (Ref. 40142); Maximaal gepubliceerd gewicht: 1.0 t (Ref. 40142); Maximaal vermelde leeftijd: 80 jaren (Ref. 56448)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 43-57; Anale stekels 0; Anale zachte stralen: 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.

Biologie     Verklarende woordenlijst (b.v. 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 Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

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).

Voornaamste referentie Upload your references | Referenties | Coördinator | Medewerkers

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)

Status op de Rode Lijst van het IUCN (Ref. 123251)

  Ernstig bedreigd (CR) (A2bd); Date assessed: 24 October 2009

CITES (Ref. 118484)


Gevaarlijk voor mensen

  Harmless





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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).
Trophic level (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.
Weerstandsvermogen (Ref. 120179):  zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (tm=14-23; tmax=55; Fec=600,000).
Kwetsbaarheid (Ref. 59153):  Very high vulnerability (88 of 100) .
Prijsklasse (Ref. 80766):   Unknown.