The Russian sturgeon (Acipenser gueldenstaedtii), also known as the diamond sturgeon or Danube sturgeon, is a species of fish in the family Acipenseridae. It is found in Azerbaijan, Bulgaria, Georgia, Iran, Kazakhstan, Romania, Russia, Turkey, Turkmenistan, and Ukraine. It is also found in the Caspian Sea. This fish can grow up to about 235 cm (93 in) and weigh 115 kg (254 lb). Russian sturgeon mature and reproduce slowly, making them highly vulnerable to fishing. It is distinguished from other Acipenser species by its short snout with a rounded tip as well as its lower lip which is interrupted at its center.
The Russian sturgeon can grow to 210 cm (83 in) but a more normal size is 110 to 140 cm (43 to 55 in). It has a relatively short and rounded snout with three pairs of unfringed barbels closer to the tip of the snout that to the mouth. The dorsal fin has 27 to 48 soft rays and the anal fin has 16 to 35. The number of scales along the lateral line varies from 21 to 50. This fish can be distinguish from the otherwise similar starry sturgeon by the shape of its snout, its barbels and scale arrangement. The upper surface is greyish-green, the lateral scales are pale and the belly white.[5][6]
Distribution and habitatedit
The Russian sturgeon is native to the Black Sea, the Sea of Azov and the Caspian Sea. It is an anadromous fish and moves into the river systems that drain into these seas in order to make its way to spawning areas upstream. It is usually found near the bottom in fairly shallow water over sandy or muddy substrates.[6]
Biologyedit
The Russian sturgeon feeds on crustaceans, molluscs and small fishes such as gobies, anchovies and sprats. It is solitary when in the sea but becomes gregarious as it moves up-river in April, May and June to spawn.[6]
Hybridedit
In a paper published in July 2020, eggs from three Russian sturgeons were crossbred with American paddlefish using sperm from four male paddlefishes, resulting in successful hybrids called sturddlefish. The resulting offspring had a survival rate of 62% to 74% and on average reached 1 kg (2.2 lb) after a year of growth. This is the first time such fish from different genera and families successfully were crossbred.[7]
See alsoedit
Beluga (which lives in the same area and is famous for its roe – caviar)
Sourcesedit
^Gessner, J.; Freyhof, J.; Kottelat, M. (2010). "Acipenser gueldenstaedtii". IUCN Red List of Threatened Species. 2010: e.T232A13042340. doi:10.2305/IUCN.UK.2010-1.RLTS.T232A13042340.en. Retrieved 14 November 2021.
^"Appendices | CITES". cites.org. Retrieved 14 January 2022.
^Froese, R.; Pauly, D. (2017). "Acipenseridae". FishBase version (02/2017). Retrieved 18 May 2017.
^"Acipenseridae" (PDF). Deeplyfish- fishes of the world. Retrieved 18 May 2017.
^"Russian sturgeon: Acipenser gueldenstaedti (Brandt)". NatureGate. Retrieved 25 December 2013.
^ abc. Fishes of the NE Atlantic and the Mediterranean. Marine Species Identification Portal. Archived from the original on 24 June 2017. Retrieved 25 December 2013.
^Káldy, Jenő; Mozsár, Attila; Fazekas, Gyöngyvér; Farkas, Móni; Fazekas, Dorottya Lilla; Fazekas, Georgina Lea; Goda, Katalin; Gyöngy, Zsuzsanna; Kovács, Balázs; Semmens, Kenneth; Bercsényi, Miklós (6 July 2020). "Hybridization of Russian Sturgeon (Acipenser gueldenstaedtii, Brandt and Ratzeberg, 1833) and American Paddlefish (Polyodon spathula, Walbaum 1792) and Evaluation of Their Progeny". Genes. 11 (7): 753. doi:10.3390/genes11070753. PMC7397225. PMID 32640744.
Froese, Rainer; Pauly, Daniel (eds.) (2011). "Acipenser gueldenstaedtii" in FishBase. June 2011 version.
February 16, 2024
russian, sturgeon, acipenser, gueldenstaedtii, also, known, diamond, sturgeon, danube, sturgeon, species, fish, family, acipenseridae, found, azerbaijan, bulgaria, georgia, iran, kazakhstan, romania, russia, turkey, turkmenistan, ukraine, also, found, caspian,. The Russian sturgeon Acipenser gueldenstaedtii also known as the diamond sturgeon or Danube sturgeon is a species of fish in the family Acipenseridae It is found in Azerbaijan Bulgaria Georgia Iran Kazakhstan Romania Russia Turkey Turkmenistan and Ukraine It is also found in the Caspian Sea This fish can grow up to about 235 cm 93 in and weigh 115 kg 254 lb Russian sturgeon mature and reproduce slowly making them highly vulnerable to fishing It is distinguished from other Acipenser species by its short snout with a rounded tip as well as its lower lip which is interrupted at its center Russian sturgeonConservation statusCritically Endangered IUCN 3 1 1 CITES Appendix II CITES 2 Scientific classificationDomain EukaryotaKingdom AnimaliaPhylum ChordataClass ActinopterygiiOrder AcipenseriformesFamily AcipenseridaeGenus AcipenserSpecies A gueldenstaedtiiBinomial nameAcipenser gueldenstaedtiivon Brandt amp Ratzeburg 1833Synonyms 3 4 Acipenser pygmaeus Reisinger 1830 non Pallas 1814 Acipenser aculeatus Lovetsky 1834 Acipenser medius Heckel 1836 Acipenser tueckus Heckel 1836 Acipenser macrophthalmus Heckel 1836 Acipenser brevirostris Heckel 1836 non Lesueur 1818 Acipenser gueldenstaedtii var scobar Antipa 1909 Acipenser gueldenstaedti scaber Antipa 1909 Acipenser gueldenstaedti var golis Antipa 1909 Acipenser gueldenstaedti var longirostris Antipa 1909 Acipenser gueldenstaedti var acutirostris Antipa 1909 non Ayres 1854 Acipenser gueldenstaedtii var colchicus Marti 1940 Acipenser colchicus Marti 1940 Acipenser gueldenstaedtii colchicus Marti 1940 Acipenser gueldenstaedti var tanaica Marti 1940 Acipenser gueldenstaedti colchicus n danubicus Movchan 1967 Acipenser gueldenstaedti persicus n kurensis Belyaeff 1932 Contents 1 Description 2 Distribution and habitat 3 Biology 4 Hybrid 5 See also 6 SourcesDescription edit nbsp Upper and lower side of headThe Russian sturgeon can grow to 210 cm 83 in but a more normal size is 110 to 140 cm 43 to 55 in It has a relatively short and rounded snout with three pairs of unfringed barbels closer to the tip of the snout that to the mouth The dorsal fin has 27 to 48 soft rays and the anal fin has 16 to 35 The number of scales along the lateral line varies from 21 to 50 This fish can be distinguish from the otherwise similar starry sturgeon by the shape of its snout its barbels and scale arrangement The upper surface is greyish green the lateral scales are pale and the belly white 5 6 Distribution and habitat editThe Russian sturgeon is native to the Black Sea the Sea of Azov and the Caspian Sea It is an anadromous fish and moves into the river systems that drain into these seas in order to make its way to spawning areas upstream It is usually found near the bottom in fairly shallow water over sandy or muddy substrates 6 Biology editThe Russian sturgeon feeds on crustaceans molluscs and small fishes such as gobies anchovies and sprats It is solitary when in the sea but becomes gregarious as it moves up river in April May and June to spawn 6 Hybrid editIn a paper published in July 2020 eggs from three Russian sturgeons were crossbred with American paddlefish using sperm from four male paddlefishes resulting in successful hybrids called sturddlefish The resulting offspring had a survival rate of 62 to 74 and on average reached 1 kg 2 2 lb after a year of growth This is the first time such fish from different genera and families successfully were crossbred 7 See also editBeluga which lives in the same area and is famous for its roe caviar Sources edit Gessner J Freyhof J Kottelat M 2010 Acipenser gueldenstaedtii IUCN Red List of Threatened Species 2010 e T232A13042340 doi 10 2305 IUCN UK 2010 1 RLTS T232A13042340 en Retrieved 14 November 2021 Appendices CITES cites org Retrieved 14 January 2022 Froese R Pauly D 2017 Acipenseridae FishBase version 02 2017 Retrieved 18 May 2017 Acipenseridae PDF Deeplyfish fishes of the world Retrieved 18 May 2017 Russian sturgeon Acipenser gueldenstaedti Brandt NatureGate Retrieved 25 December 2013 a b c Danube sturgeon Acipenser gueldenstaedti Fishes of the NE Atlantic and the Mediterranean Marine Species Identification Portal Archived from the original on 24 June 2017 Retrieved 25 December 2013 Kaldy Jeno Mozsar Attila Fazekas Gyongyver Farkas Moni Fazekas Dorottya Lilla Fazekas Georgina Lea Goda Katalin Gyongy Zsuzsanna Kovacs Balazs Semmens Kenneth Bercsenyi Miklos 6 July 2020 Hybridization of Russian Sturgeon Acipenser gueldenstaedtii Brandt and Ratzeberg 1833 and American Paddlefish Polyodon spathula Walbaum 1792 and Evaluation of Their Progeny Genes 11 7 753 doi 10 3390 genes11070753 PMC 7397225 PMID 32640744 Froese Rainer Pauly Daniel eds 2011 Acipenser gueldenstaedtii in FishBase June 2011 version Retrieved from https en wikipedia org w index php title Russian sturgeon amp oldid 1186653961, wikipedia, wiki, book, books, library,
