Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminized

ABSTRACT Aquaculture is an industry in development around the world that allows covering the nutritional demand with a high nutritional value. Within this industry, monosex crops of some species, such as the Nile tilapia (Oreochromis niloticus), stand out. In this study, the effect of the administra...

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Autores principales:	Chávez-García,Ricardo, Contreras-Ramos,Alejandra, Ortega-Camarillo,Clara, Figueroa-Lucero,Gerardo, Prado-Flores,Guadalupe, Mendoza-Martínez,Germán, Vergara-Onofre,Marcela
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2020
Materias:	Oreochromis niloticus morphometry sexual reversal 17 α-ethynyl estradiol 17 α-methyltestosterone
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000100001
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spelling	oai:scielo:S0718-560X20200001000012020-05-25Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminizedChávez-García,RicardoContreras-Ramos,AlejandraOrtega-Camarillo,ClaraFigueroa-Lucero,GerardoPrado-Flores,GuadalupeMendoza-Martínez,GermánVergara-Onofre,Marcela Oreochromis niloticus morphometry sexual reversal 17 α-ethynyl estradiol 17 α-methyltestosterone ABSTRACT Aquaculture is an industry in development around the world that allows covering the nutritional demand with a high nutritional value. Within this industry, monosex crops of some species, such as the Nile tilapia (Oreochromis niloticus), stand out. In this study, the effect of the administration of 17α-ethinyl estradiol and 17α-methyltestosterone on the morphometry of Nile tilapia at different times was evaluated. Nile tilapia were raised under controlled conditions and divided into three groups: control: no hormone treatment; feminized: treated with 17α-ethynyl estradiol and masculinized: treated with 17α-methyltestosterone. The measurements were made at 5, 10, 15, 25, 35, 40, 50, 60 and 70 days after fertilization with the morphometric technique “truss protocol.” The data were analyzed using a general linear model of repeated measurements and analysis of variance of comparison of means. The growth curve was made using the Gompertz logistic model. The results showed that the masculinized larva presented a higher growth rate and increased daily gain of weight 2.05-2 mg compared to the controls and feminized 1.67-3 mg and 7.57-4 mg, respectively. The sexual reversion of Nile tilapia with 17 α-methyltestosterone increases the growth curve of the masculinized organism and the uniformity of the final size.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.48 n.1 20202020-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000100001en10.3856/vol48-issue1-fulltext-2302
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Oreochromis niloticus morphometry sexual reversal 17 α-ethynyl estradiol 17 α-methyltestosterone
spellingShingle	Oreochromis niloticus morphometry sexual reversal 17 α-ethynyl estradiol 17 α-methyltestosterone Chávez-García,Ricardo Contreras-Ramos,Alejandra Ortega-Camarillo,Clara Figueroa-Lucero,Gerardo Prado-Flores,Guadalupe Mendoza-Martínez,Germán Vergara-Onofre,Marcela Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminized
description	ABSTRACT Aquaculture is an industry in development around the world that allows covering the nutritional demand with a high nutritional value. Within this industry, monosex crops of some species, such as the Nile tilapia (Oreochromis niloticus), stand out. In this study, the effect of the administration of 17α-ethinyl estradiol and 17α-methyltestosterone on the morphometry of Nile tilapia at different times was evaluated. Nile tilapia were raised under controlled conditions and divided into three groups: control: no hormone treatment; feminized: treated with 17α-ethynyl estradiol and masculinized: treated with 17α-methyltestosterone. The measurements were made at 5, 10, 15, 25, 35, 40, 50, 60 and 70 days after fertilization with the morphometric technique “truss protocol.” The data were analyzed using a general linear model of repeated measurements and analysis of variance of comparison of means. The growth curve was made using the Gompertz logistic model. The results showed that the masculinized larva presented a higher growth rate and increased daily gain of weight 2.05-2 mg compared to the controls and feminized 1.67-3 mg and 7.57-4 mg, respectively. The sexual reversion of Nile tilapia with 17 α-methyltestosterone increases the growth curve of the masculinized organism and the uniformity of the final size.
author	Chávez-García,Ricardo Contreras-Ramos,Alejandra Ortega-Camarillo,Clara Figueroa-Lucero,Gerardo Prado-Flores,Guadalupe Mendoza-Martínez,Germán Vergara-Onofre,Marcela
author_facet	Chávez-García,Ricardo Contreras-Ramos,Alejandra Ortega-Camarillo,Clara Figueroa-Lucero,Gerardo Prado-Flores,Guadalupe Mendoza-Martínez,Germán Vergara-Onofre,Marcela
author_sort	Chávez-García,Ricardo
title	Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminized
title_short	Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminized
title_full	Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminized
title_fullStr	Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminized
title_full_unstemmed	Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminized
title_sort	morphometric comparison of the growth curve in nile tilapia (oreochromis niloticus) sexually reverted to masculinized and feminized
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2020000100001
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Morphometric comparison of the growth curve in Nile tilapia (Oreochromis niloticus) sexually reverted to masculinized and feminized

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