TY JOUR TI Dependence of the duration of the embryonic period of development of the sevryuga (Acipenser stellatus Pallas, 1771) and the thorn (Acipenser nudiventris Lovetsky, 1828) on the temperature regime of wintering of producers KW sevryuga KW thorn KW water temperature KW wintering of producers KW incubation of caviar JO Fisheries AU Bubunets, E.. AU Labenets, A.. AU Zhigin, A.. PY 2021 IS 2021 PB FSBI "TSUREN"