Classification / Names
आम नाम | उपशब्द | Catalog of Fishes(वर्ग, प्रजाति) | ITIS | CoL | WoRMS | Cloffa
Environment: milieu / climate zone / depth range / distribution range
पारिस्थितिकी
; स्वच्छ जल, अलवण जल; खारा ड़िमरसल; पोटामोड़िरोमस (Ref. 51243); गहराई सीमा 1 - ? m. Temperate; 71°N - 36°N, 11°E - 111°E (Ref. 124675)
Eurasia: rivers draining to Black, Azov and Caspian Seas; Siberia from Ob eastward to Yenisei drainages. Introduced throughout Europe, without formation of self-sustaining populations.
Length at first maturity / आकार / वज़न / Age
Maturity: Lm 42.8, range 40 - 45 cm
Max length : 125 cm TL पुल्लिंग / अलिंग; (Ref. 6866); common length : 40.0 cm TL पुल्लिंग / अलिंग; (Ref. 556); अधिकतम प्रकाशित वज़न: 16.0 kg (Ref. 593); अधिकतम सूचित उम्र: 20 वर्षो (Ref. 556)
Short description
पहचान कुंजी | आकृति विज्ञान | मौरफोमैटरिक्स
पृष्ठीय रीढ़ (सम्पूर्ण) : 13; पृष्ठीय सौफट रेज़ (सम्पूर्ण) : 28; गुदा कांटा: 9; ऐनल सौफट रेज़: 14 - 18. Back and flanks are beige. Five rows of scutes : 12-17D, 57-71L, 10-19V. Ventrals and laterals are very light-colored, nearly white. Narrow and pointed snout with four long and fringed barbels. Inferior lip clearly slit (Ref. 40476). Can be diagnosed from congeners in Europe by having 56-71 lateral scutes, first dorsal scute not fused with head, barbels fimbriate, lower lip interrupted in middle and 11-27 gill rakers (Ref. 59043).
A fluvial fish which inhabits rivers and their tributaries (Ref. 9696). Occurs in large rivers, usually in the current and in deep water. Moves to flooded areas to feed (Ref. 59043). Chiefly potamodromous (Ref. 58897). Like other sturgeons, it aggregates in bottom holes in winter and exhibits little activity. In spring, when ice breaks, it rises from the bottom holes and moves upstream for spawning (Ref. 593). Spawns in habitats with strong-current on gravel, rarely on gravel-sand bottom or in flooded sites. Juveniles stay in riverine habitats during their first summer. Classified as endangered species. Anadromous populations are now extirpated; local populations are still surviving in most parts of range (Ref. 59043).
Scatters eggs on gravel.
Birstein, V.J., 1993. Sturgeons and paddlefishes: threatened fishes in need of conservation. Conserv. Biol. 7:773-787. (Ref. 6866)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
मात्स्यिकी: व्यापारिक; जलीयकृषि: व्यापारिक; जलजीवालय: सार्वजनिक लजीवालय
साधन
Special reports
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इंटरनेट स्रोत
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=0.00141 (0.00081 - 0.00246), b=3.26 (3.11 - 3.41), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.6 ±0.4 se; based on diet studies.
Generation time: 13.2 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
लौटाव (Ref.
120179): निम्न, न्यूनतम जनसंख्या दुगनी होने का समय 4.5 - 14 वर्ष। (tm=5-9; tmax=36; K=0.12; Fec=11,000).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (73 of 100).
Climate Vulnerability (Ref.
125649): High to very high vulnerability (67 of 100).
Nutrients (Ref.
124155): Calcium = 22.4 [14.3, 37.4] mg/100g; Iron = 0.282 [0.181, 0.425] mg/100g; Protein = 17.6 [15.0, 20.2] %; Omega3 = 0.408 [0.247, 0.673] g/100g; Selenium = 17.9 [10.1, 32.5] μg/100g; VitaminA = 7.74 [3.10, 18.84] μg/100g; Zinc = 0.519 [0.391, 0.693] mg/100g (wet weight);
