Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s13353-019-00513-y http://hdl.handle.net/11449/189631 |
Resumo: | Red tilapia is a phenotype with potential value to the tilapia industry due to its attractive skin coloration. However, the presence of black blotches scattered on the body makes these fish less valuable than blemish-free red fish. The correlation between the degree of blotching and other economic traits is important for selective breeding programs including high-performance red fish without black blotches. Therefore, this study aimed to assess the magnitude and direct and indirect effects of blotching in crossbred red tilapia on the growth rate and body measure traits using path analysis methodology. Six genetic groups were evaluated in terms of body measurements, body weight rate, and proportion of black blotching over 250 days of growth: Chitralada and Red-Stirling; crossbred F1—♀ Red-Stirling × ♂ Chitralada and ♀ Chitralada × ♂ Red-Stirling, and the introgressive crossbreeding—♀ CR × ♂ Chitralada and ♀ Chitralada × ♂ CR (C × CR). All variables showed high and positive linear correlations. Individuals with black blotches had lower coefficients of correlation with other variables (body weight and measurements); the direct and indirect effects are near zero. The path analysis indicated a lack of genetic correlation between the degree of black blotches and the economic traits of red tilapia. This facilitates the development of high growth performance red fish with blotched-free reddish skin. |
id |
UNSP_ca9c0f0f017910a80640423f453eba95 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/189631 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodologyAquacultureBreeding programGrowthOreochromis niloticusPigmentationRed tilapiaRed tilapia is a phenotype with potential value to the tilapia industry due to its attractive skin coloration. However, the presence of black blotches scattered on the body makes these fish less valuable than blemish-free red fish. The correlation between the degree of blotching and other economic traits is important for selective breeding programs including high-performance red fish without black blotches. Therefore, this study aimed to assess the magnitude and direct and indirect effects of blotching in crossbred red tilapia on the growth rate and body measure traits using path analysis methodology. Six genetic groups were evaluated in terms of body measurements, body weight rate, and proportion of black blotching over 250 days of growth: Chitralada and Red-Stirling; crossbred F1—♀ Red-Stirling × ♂ Chitralada and ♀ Chitralada × ♂ Red-Stirling, and the introgressive crossbreeding—♀ CR × ♂ Chitralada and ♀ Chitralada × ♂ CR (C × CR). All variables showed high and positive linear correlations. Individuals with black blotches had lower coefficients of correlation with other variables (body weight and measurements); the direct and indirect effects are near zero. The path analysis indicated a lack of genetic correlation between the degree of black blotches and the economic traits of red tilapia. This facilitates the development of high growth performance red fish with blotched-free reddish skin.Federal Institute of Education Science and Technology Baiano, Campus Santa InêsDepartment of Animal Sciences Federal University of LavrasSão Paulo State University-UNESPAgrarian Sciences Center José do Rosário Vellano University-UNIFENASAquaculture Center São Paulo State University-UNESPUnit of Biotechnology University of Mogi das CruzesSão Paulo State University-UNESPAquaculture Center São Paulo State University-UNESPScience and Technology BaianoFederal University of LavrasUniversidade Estadual Paulista (Unesp)José do Rosário Vellano University-UNIFENASUniversity of Mogi das Cruzesde Assis Lago, AlineReis-Neto, Rafael Vilhena [UNESP]Rezende, Tiago Teruelda Silva Ribeiro, Mayra Cristinade Freitas, Rilke Tadeu FonsecaHilsdorf, Alexandre Wagner Silva2019-10-06T16:46:50Z2019-10-06T16:46:50Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/s13353-019-00513-yJournal of Applied Genetics.2190-38831234-1983http://hdl.handle.net/11449/18963110.1007/s13353-019-00513-y2-s2.0-85072035843Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Applied Geneticsinfo:eu-repo/semantics/openAccess2024-04-09T15:30:07Zoai:repositorio.unesp.br:11449/189631Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:57:48.300387Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology |
title |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology |
spellingShingle |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology de Assis Lago, Aline Aquaculture Breeding program Growth Oreochromis niloticus Pigmentation Red tilapia |
title_short |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology |
title_full |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology |
title_fullStr |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology |
title_full_unstemmed |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology |
title_sort |
Quantitative analysis of black blotching in a crossbred red tilapia and its effects on performance traits via a path analysis methodology |
author |
de Assis Lago, Aline |
author_facet |
de Assis Lago, Aline Reis-Neto, Rafael Vilhena [UNESP] Rezende, Tiago Teruel da Silva Ribeiro, Mayra Cristina de Freitas, Rilke Tadeu Fonseca Hilsdorf, Alexandre Wagner Silva |
author_role |
author |
author2 |
Reis-Neto, Rafael Vilhena [UNESP] Rezende, Tiago Teruel da Silva Ribeiro, Mayra Cristina de Freitas, Rilke Tadeu Fonseca Hilsdorf, Alexandre Wagner Silva |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Science and Technology Baiano Federal University of Lavras Universidade Estadual Paulista (Unesp) José do Rosário Vellano University-UNIFENAS University of Mogi das Cruzes |
dc.contributor.author.fl_str_mv |
de Assis Lago, Aline Reis-Neto, Rafael Vilhena [UNESP] Rezende, Tiago Teruel da Silva Ribeiro, Mayra Cristina de Freitas, Rilke Tadeu Fonseca Hilsdorf, Alexandre Wagner Silva |
dc.subject.por.fl_str_mv |
Aquaculture Breeding program Growth Oreochromis niloticus Pigmentation Red tilapia |
topic |
Aquaculture Breeding program Growth Oreochromis niloticus Pigmentation Red tilapia |
description |
Red tilapia is a phenotype with potential value to the tilapia industry due to its attractive skin coloration. However, the presence of black blotches scattered on the body makes these fish less valuable than blemish-free red fish. The correlation between the degree of blotching and other economic traits is important for selective breeding programs including high-performance red fish without black blotches. Therefore, this study aimed to assess the magnitude and direct and indirect effects of blotching in crossbred red tilapia on the growth rate and body measure traits using path analysis methodology. Six genetic groups were evaluated in terms of body measurements, body weight rate, and proportion of black blotching over 250 days of growth: Chitralada and Red-Stirling; crossbred F1—♀ Red-Stirling × ♂ Chitralada and ♀ Chitralada × ♂ Red-Stirling, and the introgressive crossbreeding—♀ CR × ♂ Chitralada and ♀ Chitralada × ♂ CR (C × CR). All variables showed high and positive linear correlations. Individuals with black blotches had lower coefficients of correlation with other variables (body weight and measurements); the direct and indirect effects are near zero. The path analysis indicated a lack of genetic correlation between the degree of black blotches and the economic traits of red tilapia. This facilitates the development of high growth performance red fish with blotched-free reddish skin. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T16:46:50Z 2019-10-06T16:46:50Z 2019-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s13353-019-00513-y Journal of Applied Genetics. 2190-3883 1234-1983 http://hdl.handle.net/11449/189631 10.1007/s13353-019-00513-y 2-s2.0-85072035843 |
url |
http://dx.doi.org/10.1007/s13353-019-00513-y http://hdl.handle.net/11449/189631 |
identifier_str_mv |
Journal of Applied Genetics. 2190-3883 1234-1983 10.1007/s13353-019-00513-y 2-s2.0-85072035843 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Applied Genetics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129004038782976 |