Association between polymorphism in the Prolactin I promoter and growth of tilapia in saline-water
| Autor: | Andrey Shirak, Gideon Hulata, Tatiana Slosman, Ariel Velan, Micha Ron, Avner Cnaani |
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| Rok vydání: | 2015 |
| Předmět: |
lcsh:SH1-691
Genetics Oreochromis mossambicus Veterinary medicine food.ingredient biology Oreochromis QTL PRL Microsatellite Tilapia Aquatic Science Saline water biology.organism_classification Salinity tolerance lcsh:Aquaculture. Fisheries. Angling Prolactin Salinity food Genotype Animal Science and Zoology Allele Repetitive elements |
| Zdroj: | Aquaculture Reports, Vol 1, Iss C, Pp 5-9 (2015) |
| ISSN: | 2352-5134 |
| DOI: | 10.1016/j.aqrep.2015.03.001 |
| Popis: | Tilapias are a group of species with a variable tolerance to high salinity, which are cultured worldwide in fresh, brackish and seawater. Prolactin I (PRL I) is known as a key hormone in osmoregulatory physiological pathways. A previous study, conducted in a single family, reported on association between polymorphism in a repetitive element within the promoter of the PRL I gene and growth rate of tilapia in saline water. This study was aiming to further validate this association in a larger sample size, and was conducted in nine families over two consecutive breeding seasons. We have confirmed this association in the three F2 families of Oreochromis mossambicus × Oreochromis niloticus hybrids challenged in the first year. The same pattern of improved growth for genotypes with shorter alleles originating from the O. niloticus grand-parental fish, although O. mossambicus is considered to be a more salt tolerant species, was demonstrated. The effects accounted for 13–15% of the phenotypic variance for growth rate (P |
| Databáze: | OpenAIRE |
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