Joern Gessner (Leibuiz Institute of Freshwater Ecology), Patrick Williot, France) Eric Rochard (Cemagref, Berlin) Jörg Freyhof (Leibniz Institute of Freshwater Ecology and Inland Fisheries, Maurice Kottelat (IUCN SSC Freshwater Fish Specialist Group).IUCN Red List of Threatened Species: Acipenser sturio (неопр.). IUCN Red List of Threatened Species (24 октября 2009). — «The size of the population today is much smaller (approximately 20-750 native wild adult fish, based on an assessment of the size the cohort before they leave the estuary). There are more individuals from stocking (7,000 in 2007; 80,000 in 2008; and 46,000 in 2009) (Rouault et al. 2008; Rochard 2010). These have not yet bred in the wild and first breeding (from the releases of 1995) is expected by 2014, F1 generation of 2007 and later releases around 2021. The limiting factor is the availability of females which won't reproduce until ~2016 (Rochard, pers. comm).
...The last record from the Rioni (Georgia) was in 1991, although further surveys have failed to find the species (J. Gessner, pers comm.). Today this species is restricted only to the Garonne River (France).» Дата обращения: 7 мая 2021. Архивировано 13 мая 2021 года.
Joern Gessner (Leibuiz Institute of Freshwater Ecology), Patrick Williot, France) Eric Rochard (Cemagref, Berlin) Jörg Freyhof (Leibniz Institute of Freshwater Ecology and Inland Fisheries, Maurice Kottelat (IUCN SSC Freshwater Fish Specialist Group).IUCN Red List of Threatened Species: Acipenser sturio (неопр.). IUCN Red List of Threatened Species (24 октября 2009). — «The size of the population today is much smaller (approximately 20-750 native wild adult fish, based on an assessment of the size the cohort before they leave the estuary). There are more individuals from stocking (7,000 in 2007; 80,000 in 2008; and 46,000 in 2009) (Rouault et al. 2008; Rochard 2010). These have not yet bred in the wild and first breeding (from the releases of 1995) is expected by 2014, F1 generation of 2007 and later releases around 2021. The limiting factor is the availability of females which won't reproduce until ~2016 (Rochard, pers. comm).
...The last record from the Rioni (Georgia) was in 1991, although further surveys have failed to find the species (J. Gessner, pers comm.). Today this species is restricted only to the Garonne River (France).» Дата обращения: 7 мая 2021. Архивировано 13 мая 2021 года.
