INFLUENCE OF SURFAGON INJECTIONS ON BIOCHEMICAL COMPOSITION OF BLOOD AND STRUCTURAL TRANSFORMATIONS OF OVARIES IN HYBRID FEMALES OF RUSSIAN STURGEON × LENA STURGEON (ACIPENSER GUELDENSTAEDTII BRANDT, 1833 × ACIPENSER BAERII BRANDT, 1869) IN RECIRCULATED AQUACULTURE SYSTEMS
Vestnik Astrahanskogo gosudarstvennogo tehničeskogo universiteta. Seriâ: Rybnoe hozâjstvo