{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,2]],"date-time":"2026-04-02T16:11:59Z","timestamp":1775146319552,"version":"3.50.1"},"reference-count":56,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2020,7,7]],"date-time":"2020-07-07T00:00:00Z","timestamp":1594080000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000780","name":"European Commission","doi-asserted-by":"publisher","award":["642893"],"award-info":[{"award-number":["642893"]}],"id":[{"id":"10.13039\/501100000780","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Animals"],"abstract":"<jats:p>Hatchery-reared sterlet originating from the Danube and Volga river basins that showed population-discriminatory alleles on at least one microsatellite locus were used to produce purebred (within-population) and hybrid crosses to evaluate intraspecific hybridization with respect to the genetic polymorphism and physiological fitness of fish for commercial aquaculture and, conservation programs. Reciprocal crossing assessed the effect of parent position. The fish were reared in indoor and outdoor tanks and monitored over 504 days for growth traits. The highest final mean body weight (144.9 \u00b1 59.5 g) was recorded in the Danube (\u2640) \u00d7 Volga (\u2642) hybrid and the highest survival in the Volga (\u2640) \u00d7 Danube (\u2642) hybrid. The Volga purebred exhibited the lowest mean body weight (124.8 \u00b1 57.6 g). A set of six microsatellites was used to evaluate the heterozygosity. The mean number of alleles was highest in the Danube (\u2640) \u00d7 Volga (\u2642) hybrid and lowest in the Volga purebred, suggesting an influence of the parent position in the hybridization matrix. The higher level of genetic polymorphism, as in the Danube (\u2640) \u00d7 Volga (\u2642) hybrid, may confer greater fitness in a novel environment. Our analysis revealed that the intraspecific hybrids performed better than the purebred fish in the controlled and suboptimal rearing conditions.<\/jats:p>","DOI":"10.3390\/ani10071149","type":"journal-article","created":{"date-parts":[[2020,7,7]],"date-time":"2020-07-07T10:41:09Z","timestamp":1594118469000},"page":"1149","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Intraspecific Hybrids Versus Purebred: A Study of Hatchery-Reared Populations of Sterlet Acipenser ruthenus"],"prefix":"10.3390","volume":"10","author":[{"given":"Sahana","family":"Shivaramu","sequence":"first","affiliation":[{"name":"South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in \u010cesk\u00e9 Bud\u011bjovice, Z\u00e1ti\u0161\u00ed 728\/II, 389 25 Vod\u0148any, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ievgen","family":"Lebeda","sequence":"additional","affiliation":[{"name":"South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in \u010cesk\u00e9 Bud\u011bjovice, Z\u00e1ti\u0161\u00ed 728\/II, 389 25 Vod\u0148any, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Vojt\u011bch","family":"Ka\u0161par","sequence":"additional","affiliation":[{"name":"South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in \u010cesk\u00e9 Bud\u011bjovice, Z\u00e1ti\u0161\u00ed 728\/II, 389 25 Vod\u0148any, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Flaj\u0161hans","sequence":"additional","affiliation":[{"name":"South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in \u010cesk\u00e9 Bud\u011bjovice, Z\u00e1ti\u0161\u00ed 728\/II, 389 25 Vod\u0148any, Czech Republic"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,7,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1080\/02724634.1991.10011424","article-title":"Osteology and Phylogenetic Relationships of Fossil and Recent Paddlefishes (Polyodontidae) with Comments on the Interrelationships of Acipenseriformes","volume":"11","author":"Grande","year":"1991","journal-title":"J. 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