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Acipenser schrenckii, Amur sturgeon : fisheries
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Chondrostei (sturgeons) >
Acipenseriformes
(Sturgeons and paddlefishes) >
Acipenseridae
(Sturgeons) > Acipenserinae
Etymology:
Acipenser:
Latin, acipenser = sturgeon, 1853 (Ref.
45335
)
.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Marine; freshwater; brackish; demersal; anadromous (Ref.
26364
). Temperate; 10°C - 20°C (Ref.
2059
)
Asia: Endemic to the Amur River system. Two morphs, brown and gray, represent the species in the Amur River basin. Occurrence in the Sea of Japan (Ref.
11102
) needs confirmation.
Length at first maturity / Size / Weight / Age
Maturity: L
m
108.8
, range 96 - 125 cm
Max length : 300 cm TL male/unsexed; (Ref.
40142
); max. published weight: 190.0 kg (Ref.
40142
); max. reported age: 65 years (Ref.
56448
)
Dorsal
spines
(total): 0;
Dorsal
soft rays
(total): 38-53;
Anal
spines
: 0;
Anal
soft rays
: 20 - 32. Body shields in 5 rows; dorsal shields 11 to 15, lateral shields 32 to 47 and ventral 7 to 10.
Adults occur in stretches of rivers with sandy or stony bottom. Feed on benthic organisms. Highly prized fish (Ref.
41072
).
The gray morph females in the Amur River reproduce at least every four years (Ref.
40142
).
IUCN
, 1990. 1990 IUCN red list of threatened animals. IUCN, Gland, Switzerland and Cambridge, U.K. 288 p. (Ref.
3881
)
IUCN Red List Status (Ref.
130435
)
Critically Endangered (CR)
(A2bd); Date assessed:
15 September 2019
CITES
Appendix II:
International trade monitored
Appendix II:
Migratory species conserved through agreements
Threat to humans
Harmless
Human uses
Fisheries: commercial
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Estimates based on models
Phylogenetic diversity index (Ref.
82804
): PD
50
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00167 - 0.00434), b=3.24 (3.11 - 3.37), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245
).
Trophic level (Ref.
69278
): 3.3 ±0.1 se; based on diet studies.
Generation time: 22.0 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
Resilience (Ref.
120179
): Very Low, minimum population doubling time more than 14 years (tm=8-14; Fec=29,000).
Fishing Vulnerability (Ref.
59153
): Very high vulnerability (87 of 100).
Price category (Ref.
80766
):
Unknown
.
Nutrients (Ref.
124155
): Calcium = 13.5 [7.7, 23.3] mg/100g; Iron = 0.245 [0.148, 0.387] mg/100g; Protein = 17.5 [15.0, 20.2] %; Omega3 = 0.329 [0.180, 0.595] g/100g; Selenium = 23.9 [12.6, 47.1] μg/100g; VitaminA = 4.56 [1.63, 12.77] μg/100g; Zinc = 0.469 [0.334, 0.657] mg/100g (wet weight);
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