Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration

ABSTRACT In this study, sex steroids (E2, T, and 11-KT) concentrations in blood of captive leopard grouper (Mycteroperca rosacea) and their relation to gonad development were determined during a reproductive cycle. Each month, gonad samples from 24 fish were obtained to analyze gonadal maturation an...

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Autores principales:	Maldonado-García,María, Gracia-López,Vicente, Kiewek-Martínez,M., Carrillo,M., Zanuy,S.
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2018
Materias:	Mycteroperca rosacea sex steroids leopard grouper sex change hermaphroditism
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100083
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spelling	oai:scielo:S0718-560X20180001000832018-04-17Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentrationMaldonado-García,MaríaGracia-López,VicenteKiewek-Martínez,M.Carrillo,M.Zanuy,S. Mycteroperca rosacea sex steroids leopard grouper sex change hermaphroditism ABSTRACT In this study, sex steroids (E2, T, and 11-KT) concentrations in blood of captive leopard grouper (Mycteroperca rosacea) and their relation to gonad development were determined during a reproductive cycle. Each month, gonad samples from 24 fish were obtained to analyze gonadal maturation and blood was extracted to determine steroid levels. Throughout the year, ovaries showed a higher percentage of primary oocytes. In January, oocytes at early and late vitellogenesis stages increased progressively; from March to June, ovulation rates were high. In females, estradiol levels increased from March and decreased after the spawning season. Lower levels of testosterone were found during the spawning season and 11-KT remained without significant changes throughout the year. Males exhibit a significant increase in E2 from March until July; testosterone remained without significant variation throughout the year, and 11-KT plasma levels increased from March until July and decreased after the spawning season. In this study, we verified the sex change of an organism and the concentrations of sexual steroids were determined and discussed.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.46 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100083en10.3856/vol46-issue1-fulltext-10
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Mycteroperca rosacea sex steroids leopard grouper sex change hermaphroditism
spellingShingle	Mycteroperca rosacea sex steroids leopard grouper sex change hermaphroditism Maldonado-García,María Gracia-López,Vicente Kiewek-Martínez,M. Carrillo,M. Zanuy,S. Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration
description	ABSTRACT In this study, sex steroids (E2, T, and 11-KT) concentrations in blood of captive leopard grouper (Mycteroperca rosacea) and their relation to gonad development were determined during a reproductive cycle. Each month, gonad samples from 24 fish were obtained to analyze gonadal maturation and blood was extracted to determine steroid levels. Throughout the year, ovaries showed a higher percentage of primary oocytes. In January, oocytes at early and late vitellogenesis stages increased progressively; from March to June, ovulation rates were high. In females, estradiol levels increased from March and decreased after the spawning season. Lower levels of testosterone were found during the spawning season and 11-KT remained without significant changes throughout the year. Males exhibit a significant increase in E2 from March until July; testosterone remained without significant variation throughout the year, and 11-KT plasma levels increased from March until July and decreased after the spawning season. In this study, we verified the sex change of an organism and the concentrations of sexual steroids were determined and discussed.
author	Maldonado-García,María Gracia-López,Vicente Kiewek-Martínez,M. Carrillo,M. Zanuy,S.
author_facet	Maldonado-García,María Gracia-López,Vicente Kiewek-Martínez,M. Carrillo,M. Zanuy,S.
author_sort	Maldonado-García,María
title	Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration
title_short	Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration
title_full	Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration
title_fullStr	Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration
title_full_unstemmed	Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration
title_sort	reproductive cycle of leopard grouper mycteroperca rosacea (streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2018
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2018000100083
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Reproductive cycle of leopard grouper Mycteroperca rosacea (Streets, 1877) held in captivity: relationship between gonad development and sex steroid concentration

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