The influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain Atlantic salmon
Abstract Background In Atlantic salmon in the wild, age at maturity is strongly influenced by the vgll3 locus. Under farming conditions, light, temperature and feeding regimes are known significantly advance or delay age at maturity. However, the potential influence of the vgll3 locus on the maturat...
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| Format: | Article |
| Language: | English |
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BMC
2019-05-01
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| Series: | BMC Genetics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12863-019-0745-9 |
| _version_ | 1811291919151529984 |
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| author | Fernando Ayllon Monica F. Solberg Kevin A. Glover Faezeh Mohammadi Erik Kjærner-Semb Per Gunnar Fjelldal Eva Andersson Tom Hansen Rolf B. Edvardsen Anna Wargelius |
| author_facet | Fernando Ayllon Monica F. Solberg Kevin A. Glover Faezeh Mohammadi Erik Kjærner-Semb Per Gunnar Fjelldal Eva Andersson Tom Hansen Rolf B. Edvardsen Anna Wargelius |
| author_sort | Fernando Ayllon |
| collection | DOAJ |
| description | Abstract Background In Atlantic salmon in the wild, age at maturity is strongly influenced by the vgll3 locus. Under farming conditions, light, temperature and feeding regimes are known significantly advance or delay age at maturity. However, the potential influence of the vgll3 locus on the maturation of salmon reared under farming conditions has been rarely investigated, especially in females. Results Here, we reared domesticated salmon (mowi strain) with different vgll3 genotypes under standard farming conditions until they matured at either one, two or more than two sea winters. Interestingly, and in contrast to previous findings in the wild, we were not able to identify a link between vgll3 and age at maturity in females when reared under farming conditions. For males however, we found that the probability of delaying maturation from one to two sea winters was significantly lower in fish homozygous for the early allele compared to homozygous fish for the late allele, while the probability for heterozygous fish was intermediate. These data also contrast to previous findings in the wild where the early allele has been reported as dominant. However, we found that the probability of males delaying maturation from two to three sea winters was regulated in the same manner as the wild. Conclusions Collectively, our data suggest that increased growth rates in mowi salmon, caused by high feed intake and artificial light and temperature regimes together with other possible genetic/epigenetic components, may significantly influence the impact that the vgll3 locus has on age at maturity, especially in females. In turn, our results show that the vgll3 locus can only to a large extent be used in selective breeding to control age at maturation in mowi males. In summary, we here show that in contrast to the situation in wild salmon, under farming conditions vgll3 does not seem to influence age at maturity in mowi females whereas in mowi males, maturing as one or two sea winters it alters the early allele effect from dominant to intermediate. |
| first_indexed | 2024-04-13T04:37:32Z |
| format | Article |
| id | doaj.art-1caa2b5e4f7d458e9bba3bedf81b4063 |
| institution | Directory Open Access Journal |
| issn | 1471-2156 |
| language | English |
| last_indexed | 2024-04-13T04:37:32Z |
| publishDate | 2019-05-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Genetics |
| spelling | doaj.art-1caa2b5e4f7d458e9bba3bedf81b40632022-12-22T03:02:07ZengBMCBMC Genetics1471-21562019-05-012011810.1186/s12863-019-0745-9The influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain Atlantic salmonFernando Ayllon0Monica F. Solberg1Kevin A. Glover2Faezeh Mohammadi3Erik Kjærner-Semb4Per Gunnar Fjelldal5Eva Andersson6Tom Hansen7Rolf B. Edvardsen8Anna Wargelius9Institute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine ResearchInstitute of Marine research (IMR)Institute of Marine ResearchInstitute of Marine research (IMR)Institute of Marine ResearchInstitute of Marine ResearchAbstract Background In Atlantic salmon in the wild, age at maturity is strongly influenced by the vgll3 locus. Under farming conditions, light, temperature and feeding regimes are known significantly advance or delay age at maturity. However, the potential influence of the vgll3 locus on the maturation of salmon reared under farming conditions has been rarely investigated, especially in females. Results Here, we reared domesticated salmon (mowi strain) with different vgll3 genotypes under standard farming conditions until they matured at either one, two or more than two sea winters. Interestingly, and in contrast to previous findings in the wild, we were not able to identify a link between vgll3 and age at maturity in females when reared under farming conditions. For males however, we found that the probability of delaying maturation from one to two sea winters was significantly lower in fish homozygous for the early allele compared to homozygous fish for the late allele, while the probability for heterozygous fish was intermediate. These data also contrast to previous findings in the wild where the early allele has been reported as dominant. However, we found that the probability of males delaying maturation from two to three sea winters was regulated in the same manner as the wild. Conclusions Collectively, our data suggest that increased growth rates in mowi salmon, caused by high feed intake and artificial light and temperature regimes together with other possible genetic/epigenetic components, may significantly influence the impact that the vgll3 locus has on age at maturity, especially in females. In turn, our results show that the vgll3 locus can only to a large extent be used in selective breeding to control age at maturation in mowi males. In summary, we here show that in contrast to the situation in wild salmon, under farming conditions vgll3 does not seem to influence age at maturity in mowi females whereas in mowi males, maturing as one or two sea winters it alters the early allele effect from dominant to intermediate.http://link.springer.com/article/10.1186/s12863-019-0745-9Atlantic salmonvgll3Time at maturityAge at pubertyAquacultureSex dependent penetrance |
| spellingShingle | Fernando Ayllon Monica F. Solberg Kevin A. Glover Faezeh Mohammadi Erik Kjærner-Semb Per Gunnar Fjelldal Eva Andersson Tom Hansen Rolf B. Edvardsen Anna Wargelius The influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain Atlantic salmon BMC Genetics Atlantic salmon vgll3 Time at maturity Age at puberty Aquaculture Sex dependent penetrance |
| title | The influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain Atlantic salmon |
| title_full | The influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain Atlantic salmon |
| title_fullStr | The influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain Atlantic salmon |
| title_full_unstemmed | The influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain Atlantic salmon |
| title_short | The influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain Atlantic salmon |
| title_sort | influence of vgll3 genotypes on sea age at maturity is altered in farmed mowi strain atlantic salmon |
| topic | Atlantic salmon vgll3 Time at maturity Age at puberty Aquaculture Sex dependent penetrance |
| url | http://link.springer.com/article/10.1186/s12863-019-0745-9 |
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