Classification / Names
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ऐकटीनोप्टीरेजी (रेज़-फिन्नढ मछलियाँ) >
Acipenseriformes (Sturgeons and paddlefishes) >
Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
पारिस्थितिकी
; समुद्री; स्वच्छ जल, अलवण जल; खारा ड़िमरसल; ऐनाढरोमस (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. International trade restricted (CITES II, since 1.4.98; CMS Appendix II).
Length at first maturity / आकार / वज़न / Age
Maturity: Lm 105.0, range 96 - 125 cm
Max length : 300 cm TL पुल्लिंग / अलिंग; (Ref. 40142); अधिकतम प्रकाशित वज़न: 190.0 kg (Ref. 40142); अधिकतम सूचित उम्र: 65 वर्षो (Ref. 56448)
पृष्ठीय रीढ़ (सम्पूर्ण): 0; पृष्ठीय सौफट रेज़ (सम्पूर्ण): 38-53; गुदा कांटा 0; ऐनल सौफट रेज़: 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. 123251)
Threat to humans
Harmless
Human uses
मात्स्यिकी: व्यापारिक
अधिक जानकारी
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इंटरनेट स्रोत
Estimates based on models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00263 (0.00162 - 0.00428), 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: 18.3 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
लौटाव (Ref.
120179): बहुत नीचे, न्यूनतम जनसंख्या दुगनी समय अवलागत 14 महीने। (tm=8-14; Fec=29,000).
Vulnerability (Ref.
59153): Very high vulnerability (85 of 100) .