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Sex Reversal and Masculinization according to Growth in Longtooth Grouper Epinephelus bruneus

To understand the sex reversal characteristics in the longtooth grouper (Epinephelus bruneus), this study examined the sex reversal and artificial masculinization of wild caught E. bruneus reared in indoor rearing tank after a 17α-methyltestosterone injection. To domesticate a broodstock, 64 wild ca...

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Autores principales: Oh, Seong-Rip, Kang, Hyeong-Cheol, Lee, Chi-Hoon, Hur, Sang-Woo, Lee, Young-Don
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Korean Society of Developmental Biology 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4282269/
https://www.ncbi.nlm.nih.gov/pubmed/25949124
http://dx.doi.org/10.12717/DR.2013.17.2.079
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author Oh, Seong-Rip
Kang, Hyeong-Cheol
Lee, Chi-Hoon
Hur, Sang-Woo
Lee, Young-Don
author_facet Oh, Seong-Rip
Kang, Hyeong-Cheol
Lee, Chi-Hoon
Hur, Sang-Woo
Lee, Young-Don
author_sort Oh, Seong-Rip
collection PubMed
description To understand the sex reversal characteristics in the longtooth grouper (Epinephelus bruneus), this study examined the sex reversal and artificial masculinization of wild caught E. bruneus reared in indoor rearing tank after a 17α-methyltestosterone injection. To domesticate a broodstock, 64 wild caught E. bruneus, between 47.0 to 110.0 cm in total length and from 1.5 to 21.4 kg in body weight, were reared in indoor rearing tank (4.0 to 5.0 m wide, and 2.5 to 3.0 m depth) for four years. Seven specimens showed sex reversal from female to male during indoor rearing condition, whose total length and body weights were from 63.0 to 99.0 cm and from 4.4 to 13.2 kg, respectively. After inducing artificial masculinization in 14 female E. bruneus with a 17α-methyltestosterone (2.0 mg/kg BW) implants for 3 years, spermiation occurred in 9 specimens (total length: 54.0 to 68.0 cm, body weight: 2.3 to 4.3 kg). Among the female to male sex reversals, two specimens returned back to being female, whose body weights were 2.8 kg (initially 2.6 kg) and 2.7 kg (initially 2.3 kg). Therefore, this study suggested that E. bruneus (> 3.0 kg) was more effective in masculinizing by 17α-methyltestosterone implants.
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spelling pubmed-42822692015-05-06 Sex Reversal and Masculinization according to Growth in Longtooth Grouper Epinephelus bruneus Oh, Seong-Rip Kang, Hyeong-Cheol Lee, Chi-Hoon Hur, Sang-Woo Lee, Young-Don Dev Reprod Article To understand the sex reversal characteristics in the longtooth grouper (Epinephelus bruneus), this study examined the sex reversal and artificial masculinization of wild caught E. bruneus reared in indoor rearing tank after a 17α-methyltestosterone injection. To domesticate a broodstock, 64 wild caught E. bruneus, between 47.0 to 110.0 cm in total length and from 1.5 to 21.4 kg in body weight, were reared in indoor rearing tank (4.0 to 5.0 m wide, and 2.5 to 3.0 m depth) for four years. Seven specimens showed sex reversal from female to male during indoor rearing condition, whose total length and body weights were from 63.0 to 99.0 cm and from 4.4 to 13.2 kg, respectively. After inducing artificial masculinization in 14 female E. bruneus with a 17α-methyltestosterone (2.0 mg/kg BW) implants for 3 years, spermiation occurred in 9 specimens (total length: 54.0 to 68.0 cm, body weight: 2.3 to 4.3 kg). Among the female to male sex reversals, two specimens returned back to being female, whose body weights were 2.8 kg (initially 2.6 kg) and 2.7 kg (initially 2.3 kg). Therefore, this study suggested that E. bruneus (> 3.0 kg) was more effective in masculinizing by 17α-methyltestosterone implants. Korean Society of Developmental Biology 2013-06 /pmc/articles/PMC4282269/ /pubmed/25949124 http://dx.doi.org/10.12717/DR.2013.17.2.079 Text en © Copyright A Official Journal of the Korean Society of Developmental Biology. All Rights Reserved. http://creativecommons.org/licenses/by-nc/3.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Article
Oh, Seong-Rip
Kang, Hyeong-Cheol
Lee, Chi-Hoon
Hur, Sang-Woo
Lee, Young-Don
Sex Reversal and Masculinization according to Growth in Longtooth Grouper Epinephelus bruneus
title Sex Reversal and Masculinization according to Growth in Longtooth Grouper Epinephelus bruneus
title_full Sex Reversal and Masculinization according to Growth in Longtooth Grouper Epinephelus bruneus
title_fullStr Sex Reversal and Masculinization according to Growth in Longtooth Grouper Epinephelus bruneus
title_full_unstemmed Sex Reversal and Masculinization according to Growth in Longtooth Grouper Epinephelus bruneus
title_short Sex Reversal and Masculinization according to Growth in Longtooth Grouper Epinephelus bruneus
title_sort sex reversal and masculinization according to growth in longtooth grouper epinephelus bruneus
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4282269/
https://www.ncbi.nlm.nih.gov/pubmed/25949124
http://dx.doi.org/10.12717/DR.2013.17.2.079
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