Interspecific hybridization of sturgeon species affects differently their gonadal development
Gonad development in fish is generally assumed to be negatively influenced by interspecific hybridization, resulting in sterility or sub-sterility. However, this is not the case in sturgeons (Acipenseridae), in which fertile hybrids are common. In the present study, we investigated gonad development...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2018-01-01
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| Series: | Czech Journal of Animal Science |
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| Online Access: | https://cjas.agriculturejournals.cz/artkey/cjs-201801-0001_interspecific-hybridization-of-sturgeon-species-affects-differently-their-gonadal-development.php |
| _version_ | 1797899155402653696 |
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| author | Zuzana Linhartová Miloš Havelka Martin Pšenička Martin Flajšhans |
| author_facet | Zuzana Linhartová Miloš Havelka Martin Pšenička Martin Flajšhans |
| author_sort | Zuzana Linhartová |
| collection | DOAJ |
| description | Gonad development in fish is generally assumed to be negatively influenced by interspecific hybridization, resulting in sterility or sub-sterility. However, this is not the case in sturgeons (Acipenseridae), in which fertile hybrids are common. In the present study, we investigated gonad development in several sturgeon interspecific hybrids and purebred species. Six interspecific hybrid groups and three purebred groups were analyzed including 20 hybrid specimens with even ploidy, 40 specimens having odd ploidy levels, and 30 purebred specimens. Hybrids of species with the same ploidy (even ploidy - 2n, 4n) exhibited normally developed gonads similar to those seen in purebred specimens. In contrast, hybrids of species differing in ploidy (odd ploidy - 3n) did not display fully developed gonads. Ovaries were composed of oocytes or nests of differentiating oocytes that ceased development in early stages of meiosis (pachytene to zygotene) with a higher content of adipose and apoptotic tissue. Testes contained single spermatogonia along with Sertoli cells and spaces lacking germ cells. The obtained results showed that gonad development was influenced by genetic origin and ploidy of the sturgeon hybrids and were consistent with full fertility of hybrids with even ploidy. Sterility of females, but possibly limited fertility of males, is suggested for hybrids with odd ploidy. |
| first_indexed | 2024-04-10T08:25:31Z |
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| id | doaj.art-daa1b3994ce340ffad1ed7b8eb324d35 |
| institution | Directory Open Access Journal |
| issn | 1212-1819 1805-9309 |
| language | English |
| last_indexed | 2024-04-10T08:25:31Z |
| publishDate | 2018-01-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Czech Journal of Animal Science |
| spelling | doaj.art-daa1b3994ce340ffad1ed7b8eb324d352023-02-23T03:33:35ZengCzech Academy of Agricultural SciencesCzech Journal of Animal Science1212-18191805-93092018-01-0163111010.17221/37/2016-CJAScjs-201801-0001Interspecific hybridization of sturgeon species affects differently their gonadal developmentZuzana Linhartová0Miloš Havelka1Martin Pšenička2Martin Flajšhans3South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, Vodňany, Czech RepublicSouth Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, Vodňany, Czech RepublicSouth Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, Vodňany, Czech RepublicSouth Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, Vodňany, Czech RepublicGonad development in fish is generally assumed to be negatively influenced by interspecific hybridization, resulting in sterility or sub-sterility. However, this is not the case in sturgeons (Acipenseridae), in which fertile hybrids are common. In the present study, we investigated gonad development in several sturgeon interspecific hybrids and purebred species. Six interspecific hybrid groups and three purebred groups were analyzed including 20 hybrid specimens with even ploidy, 40 specimens having odd ploidy levels, and 30 purebred specimens. Hybrids of species with the same ploidy (even ploidy - 2n, 4n) exhibited normally developed gonads similar to those seen in purebred specimens. In contrast, hybrids of species differing in ploidy (odd ploidy - 3n) did not display fully developed gonads. Ovaries were composed of oocytes or nests of differentiating oocytes that ceased development in early stages of meiosis (pachytene to zygotene) with a higher content of adipose and apoptotic tissue. Testes contained single spermatogonia along with Sertoli cells and spaces lacking germ cells. The obtained results showed that gonad development was influenced by genetic origin and ploidy of the sturgeon hybrids and were consistent with full fertility of hybrids with even ploidy. Sterility of females, but possibly limited fertility of males, is suggested for hybrids with odd ploidy.https://cjas.agriculturejournals.cz/artkey/cjs-201801-0001_interspecific-hybridization-of-sturgeon-species-affects-differently-their-gonadal-development.phpacipenseriformesgonad histologyhybrid fertilityhybrid gametogenesis |
| spellingShingle | Zuzana Linhartová Miloš Havelka Martin Pšenička Martin Flajšhans Interspecific hybridization of sturgeon species affects differently their gonadal development Czech Journal of Animal Science acipenseriformes gonad histology hybrid fertility hybrid gametogenesis |
| title | Interspecific hybridization of sturgeon species affects differently their gonadal development |
| title_full | Interspecific hybridization of sturgeon species affects differently their gonadal development |
| title_fullStr | Interspecific hybridization of sturgeon species affects differently their gonadal development |
| title_full_unstemmed | Interspecific hybridization of sturgeon species affects differently their gonadal development |
| title_short | Interspecific hybridization of sturgeon species affects differently their gonadal development |
| title_sort | interspecific hybridization of sturgeon species affects differently their gonadal development |
| topic | acipenseriformes gonad histology hybrid fertility hybrid gametogenesis |
| url | https://cjas.agriculturejournals.cz/artkey/cjs-201801-0001_interspecific-hybridization-of-sturgeon-species-affects-differently-their-gonadal-development.php |
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