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- Title
Length-Weight Relationships and Condition Factors of Three Sturgeon Species (Acipenseridae) from the Danube River.
- Authors
Margaritova, Borislava K.; Uzunova, Eliza P.
- Abstract
Length-weight relationships (LWRs), Fulton (K) and relative (Krel) condition factors for Acipenser ruthenus Linnaeus, 1758, Acipenser gueldenstaedtii Brandt & Ratzeburg, 1833 and Acipenser stellatus Pallas, 1771 from the Danube River were estimated. Fish were captured by bottom drifting trammel nets in the period June - August, 2015-2019. A total of 790 specimens were measured and analyzed. More than 80% of the specimens were young of the year (YOY) fish with total length (TL) up to 35 cm. The values of the parameter b of the weight - length relationship for fish with lengths up to 35 cm ranged from 2.433 (A. ruthenus) to 2.859 (A. gueldenstaedtii). For specimens with TL > 35 cm the values of parameter b ranged from 3.227 (A. stellatus) to 3.668 (A. ruthenus). Relative condition factor (Krel) ranged from 1.003 ± 0.020 (A. gueldenstaedtii) to 1.144 ± 0.018 for A. ruthenus. Fulton's condition factor (K) ranged from 0.300 ± 0.003 for A. stellatus to 0.514 ± 0.011 for A. gueldenstaedtii.
- Subjects
STURGEONS; ACIPENSER; SPECIES; RIVERS; FISHES
- Publication
Ecologia Balkanica, 2020, Vol 12, Issue 2, p197
- ISSN
1313-9940
- Publication type
Article