{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,31]],"date-time":"2026-03-31T19:57:50Z","timestamp":1774987070258,"version":"3.50.1"},"reference-count":44,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2024,6,27]],"date-time":"2024-06-27T00:00:00Z","timestamp":1719446400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Research, Development and Innovation Fund of Hungary","award":["PD-139053"],"award-info":[{"award-number":["PD-139053"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Life"],"abstract":"<jats:p>In the present study, 10 allotriploid (3nALT) and 10 allopentaploid (5nALP) six-month-old hybrid fish and two 3nALT and four 5nALP 40-month-old hybrid fish, which resulted by crossing female Russian sturgeon Acipenser gueldenstaedtii (Brandt and Ratzeberg, 1833) and male American paddlefish Polyodon spathula (Walbaum, 1792), were investigated. It was revealed that six-month-old 3nALT and 5nALP hybrids initially had \u201cundifferentiated\u201d gonads, while in the 40-month-old hybrids, only testes were observed in one case of 3nALT and one case of 5nALP hybrids. The testis of 3nALT hybrids was partially developed with spermatogonia, while the testis of one 5nALP hybrid was in the second developmental stage with low spermatogonia density. We could not determine gonad differentiation in any of the cases when the hybrid individuals had the W sex chromosome. We concluded that the gonad differentiation of these interfamilial hybrids follows a similar pattern to interspecific hybrids of different ploidy parent species of the family Acipenseridae, which is consistent with the classical Haldane\u2019s rule. However, it cannot be excluded that the testis of this\/these hybrid(s) may produce fertile sperm after sexual maturity, depending on additional genetic, hormonal and environmental factors, and further research is required for its evaluation.<\/jats:p>","DOI":"10.3390\/life14070818","type":"journal-article","created":{"date-parts":[[2024,6,27]],"date-time":"2024-06-27T13:26:43Z","timestamp":1719494803000},"page":"818","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Investigation of Sexes and Fertility Potential of Female Russian Sturgeon (Acipenser gueldenstaedtii) and Male American Paddlefish (Polyodon spathula) Hybrids"],"prefix":"10.3390","volume":"14","author":[{"given":"Katalin","family":"Bog\u00e1r","sequence":"first","affiliation":[{"name":"Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-5540 Szarvas, Hungary"},{"name":"PhD School of Animal Biotechnology and Animal Science, Hungarian University of Agriculture and Life Sciences, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jelena","family":"Stanivuk","sequence":"additional","affiliation":[{"name":"Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-5540 Szarvas, Hungary"},{"name":"PhD School of Animal Biotechnology and Animal Science, Hungarian University of Agriculture and Life Sciences, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aliz","family":"G\u00e9czi","sequence":"additional","affiliation":[{"name":"Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-5540 Szarvas, Hungary"},{"name":"PhD School of Animal Biotechnology and Animal Science, Hungarian University of Agriculture and Life Sciences, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Georgina Lea","family":"Fazekas","sequence":"additional","affiliation":[{"name":"Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-5540 Szarvas, Hungary"},{"name":"PhD School of Animal Biotechnology and Animal Science, Hungarian University of Agriculture and Life Sciences, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1753-5098","authenticated-orcid":false,"given":"Bal\u00e1zs","family":"Kov\u00e1cs","sequence":"additional","affiliation":[{"name":"Department of Molecular Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bence","family":"L\u00e1z\u00e1r","sequence":"additional","affiliation":[{"name":"Institute for Farm Animal Gene Conservation, National Centre for Biodiversity and Gene Conservation, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"},{"name":"Animal Biotechnology Department, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9495-5574","authenticated-orcid":false,"given":"Mariann","family":"Moln\u00e1r","sequence":"additional","affiliation":[{"name":"PhD School of Animal Biotechnology and Animal Science, Hungarian University of Agriculture and Life Sciences, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"},{"name":"Institute for Farm Animal Gene Conservation, National Centre for Biodiversity and Gene Conservation, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L\u00e1szl\u00f3","family":"Ard\u00f3","sequence":"additional","affiliation":[{"name":"Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-5540 Szarvas, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1972-467X","authenticated-orcid":false,"given":"Uro\u0161","family":"Ljubobratovi\u0107","sequence":"additional","affiliation":[{"name":"Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-5540 Szarvas, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gyula","family":"Kov\u00e1cs","sequence":"additional","affiliation":[{"name":"Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-5540 Szarvas, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D\u00e1niel","family":"P\u00e9ter","sequence":"additional","affiliation":[{"name":"Department of Molecular Ecology, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0114-5255","authenticated-orcid":false,"given":"Eszter","family":"V\u00e1rkonyi","sequence":"additional","affiliation":[{"name":"Institute for Farm Animal Gene Conservation, National Centre for Biodiversity and Gene Conservation, H-2100 G\u00f6d\u00f6ll\u0151, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jen\u0151","family":"K\u00e1ldy","sequence":"additional","affiliation":[{"name":"Research Centre for Fisheries and Aquaculture, Institute of Aquaculture and Environmental Safety, Hungarian University of Agriculture and Life Sciences, H-5540 Szarvas, Hungary"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,6,27]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Gregory, T.R. 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