Body-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)

Abstract The phenotype of juvenile fish is closely associated with the adult phenotype, thus consisting an important quality trait for reared fish stocks. In this study, we estimated the correlation between the juvenile and adult body-shape in Gilthead seabream, and examined the genetic basis of the...

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Autores principales:	Stefanos Fragkoulis, Dimosthenis Kerasovitis, Costas Batargias, George Koumoundouros
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/75be95a98ead42289fcedb8bbffe2f46
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spelling	oai:doaj.org-article:75be95a98ead42289fcedb8bbffe2f462021-12-02T15:10:50ZBody-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)10.1038/s41598-021-95726-92045-2322https://doaj.org/article/75be95a98ead42289fcedb8bbffe2f462021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95726-9https://doaj.org/toc/2045-2322Abstract The phenotype of juvenile fish is closely associated with the adult phenotype, thus consisting an important quality trait for reared fish stocks. In this study, we estimated the correlation between the juvenile and adult body-shape in Gilthead seabream, and examined the genetic basis of the ontogenetic trajectories. The body shape of 959 pit-tagged fish was periodically examined during the juvenile-to-adult period. Individual shape ontogenetic trajectories were studied in respect to the initial (juvenile) and final (adult) phenotypes, as well as to the rate that adult phenotype is attained (phenotypic integration rate). We found that the juvenile body-shape presented a rapid change up to 192.7 ± 1.9 mm standard length, followed by a phenotypically stable period (plateau). Depending on the shape component considered, body-shape correlations between juvenile and adult stages ranged from 0.22 to 0.76. Heritability estimates (h2) of the final phenotype ranged from 0.370 ± 0.077 to 0.511 ± 0.089, whereas h2 for the phenotypic integration rate was 0.173 ± 0.062. To our knowledge, this is the first study demonstrating that the variance of the ontogenetic trajectories has a substantial additive genetic component. Results are discussed in respect to their potential use in selective breeding programs of Gilthead seabream.Stefanos FragkoulisDimosthenis KerasovitisCostas BatargiasGeorge KoumoundourosNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Stefanos Fragkoulis Dimosthenis Kerasovitis Costas Batargias George Koumoundouros Body-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)
description	Abstract The phenotype of juvenile fish is closely associated with the adult phenotype, thus consisting an important quality trait for reared fish stocks. In this study, we estimated the correlation between the juvenile and adult body-shape in Gilthead seabream, and examined the genetic basis of the ontogenetic trajectories. The body shape of 959 pit-tagged fish was periodically examined during the juvenile-to-adult period. Individual shape ontogenetic trajectories were studied in respect to the initial (juvenile) and final (adult) phenotypes, as well as to the rate that adult phenotype is attained (phenotypic integration rate). We found that the juvenile body-shape presented a rapid change up to 192.7 ± 1.9 mm standard length, followed by a phenotypically stable period (plateau). Depending on the shape component considered, body-shape correlations between juvenile and adult stages ranged from 0.22 to 0.76. Heritability estimates (h2) of the final phenotype ranged from 0.370 ± 0.077 to 0.511 ± 0.089, whereas h2 for the phenotypic integration rate was 0.173 ± 0.062. To our knowledge, this is the first study demonstrating that the variance of the ontogenetic trajectories has a substantial additive genetic component. Results are discussed in respect to their potential use in selective breeding programs of Gilthead seabream.
format	article
author	Stefanos Fragkoulis Dimosthenis Kerasovitis Costas Batargias George Koumoundouros
author_facet	Stefanos Fragkoulis Dimosthenis Kerasovitis Costas Batargias George Koumoundouros
author_sort	Stefanos Fragkoulis
title	Body-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)
title_short	Body-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)
title_full	Body-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)
title_fullStr	Body-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)
title_full_unstemmed	Body-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)
title_sort	body-shape trajectories and their genetic variance component in gilthead seabream (sparus aurata l.)
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/75be95a98ead42289fcedb8bbffe2f46
work_keys_str_mv	AT stefanosfragkoulis bodyshapetrajectoriesandtheirgeneticvariancecomponentingiltheadseabreamsparusauratal AT dimostheniskerasovitis bodyshapetrajectoriesandtheirgeneticvariancecomponentingiltheadseabreamsparusauratal AT costasbatargias bodyshapetrajectoriesandtheirgeneticvariancecomponentingiltheadseabreamsparusauratal AT georgekoumoundouros bodyshapetrajectoriesandtheirgeneticvariancecomponentingiltheadseabreamsparusauratal
_version_	1718387698328141824

Body-shape trajectories and their genetic variance component in Gilthead seabream (Sparus aurata L.)

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