Huso dauricus  (Georgi, 1775)

Kaluga
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Huso dauricus
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

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

Environment / Climate / Range Ecology

Marine; freshwater; brackish; demersal; anadromous (Ref. 51243); depth range 0 - 50 m (Ref. 50550).   Temperate; 10°C - 20°C (Ref. 2059); 55°N - 43°N

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 170 - 190 cm
Max length : 560 cm TL male/unsexed; (Ref. 40142); max. published weight: 1.0 t (Ref. 40142); max. reported age: 80 years (Ref. 56448)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 43-57; Anal spines: 0; Anal soft rays: 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.

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

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).

Biology     Glossary (e.g. 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 Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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).

Main reference Upload your references | References | Coordinator | Collaborators

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 Red List Status (Ref. 96402)

CITES (Ref. 94142)

Threat to humans

  Harmless




Human uses

Fisheries: commercial
FAO(fisheries: species profile; publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00191 (0.00109 - 0.00332), b=3.21 (3.06 - 3.36), based on LWR estimates for species & Subfamily-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.5   ±0.4 se; Based on diet studies.
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years (tm=14-23; tmax=55; Fec=600,000).
Vulnerability (Ref. 59153):  Very high vulnerability (88 of 100) .
Price category (Ref. 80766):   Unknown.