The sex ratio and testosterone levels in tilapia immersed in different doses of 17α-methyltestosterone

   Tilapia fish farming using monosex male population has been reported to have 10% higher productivity compared to mix-sex culture. This study aimed to determine immersion dose of 17α-metiltestosterone (MT) that allowed higher male percentage, growth, survival, and measure testosterone level in fis...

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Main Authors: Muhammad Zairin Junior, Muhammad Restya Naufal, Mia Setiawati, Dian Hardianto, , Alimuddin
Format: Article
Language:English
Published: Asosiasi Sains Akuakultur Indonesia 2017-07-01
Series:Jurnal Akuakultur Indonesia
Subjects:
Online Access:https://journal.ipb.ac.id/index.php/jai/article/view/16884
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author Muhammad Zairin Junior
Muhammad Restya Naufal
Mia Setiawati
Dian Hardianto
, Alimuddin
author_facet Muhammad Zairin Junior
Muhammad Restya Naufal
Mia Setiawati
Dian Hardianto
, Alimuddin
author_sort Muhammad Zairin Junior
collection DOAJ
description    Tilapia fish farming using monosex male population has been reported to have 10% higher productivity compared to mix-sex culture. This study aimed to determine immersion dose of 17α-metiltestosterone (MT) that allowed higher male percentage, growth, survival, and measure testosterone level in fish body. The experiment was designed as three immersion doses, namely: 0; 1.8; and 5.4 mg/L MT, each with three replications. Immersion was conducted to 14-day-old larvae for four hours, with density of 100 fish/L of water. Testosterone levels in fish was measured using ELISA method, and sex identification was performed by histology method. The result showed that percentage of male fish was the same in the treatment of 1.8 mg/L and 5.4 mg/L, and 53–65% higher than the control without MT treatment (54% male). Growth and survival of fish until day 56 post immersion were the same. By ELISA analysis, the levels of testosterone in larvae just after immersion was similar in 1.8 mg/L and 5.4 mg/L treatments, decreased drastically on day 14 after immersion, and then the levels of testosterone to be similar with the control on day 28, i.e. about 2 ng/g. By PCR method with specific primer, sex reversed and normal males could be distinguished, and on day 71 the testosterone levels in sex reversed and normal males fish was also the same, 0.3 ng/g (P>0.05). Thus, sex reversal by immersion at a dose of 1.8 mg/L can be consider as a standard protocol for monosex tilapia production. Testosterone level in the body of MT-treated fish becomes the same to the control of less than one month post immersion
format Article
id doaj-art-edc836d86267439e957a9441897e139a
institution Kabale University
issn 1412-5269
2354-6700
language English
publishDate 2017-07-01
publisher Asosiasi Sains Akuakultur Indonesia
record_format Article
series Jurnal Akuakultur Indonesia
spelling doaj-art-edc836d86267439e957a9441897e139a2025-01-24T17:57:51ZengAsosiasi Sains Akuakultur IndonesiaJurnal Akuakultur Indonesia1412-52692354-67002017-07-0116110.19027/jai.16.1.51-5912125The sex ratio and testosterone levels in tilapia immersed in different doses of 17α-methyltestosteroneMuhammad Zairin Junior0Muhammad Restya NaufalMia SetiawatiDian Hardianto, AlimuddinDepartment of Aquaculture   Tilapia fish farming using monosex male population has been reported to have 10% higher productivity compared to mix-sex culture. This study aimed to determine immersion dose of 17α-metiltestosterone (MT) that allowed higher male percentage, growth, survival, and measure testosterone level in fish body. The experiment was designed as three immersion doses, namely: 0; 1.8; and 5.4 mg/L MT, each with three replications. Immersion was conducted to 14-day-old larvae for four hours, with density of 100 fish/L of water. Testosterone levels in fish was measured using ELISA method, and sex identification was performed by histology method. The result showed that percentage of male fish was the same in the treatment of 1.8 mg/L and 5.4 mg/L, and 53–65% higher than the control without MT treatment (54% male). Growth and survival of fish until day 56 post immersion were the same. By ELISA analysis, the levels of testosterone in larvae just after immersion was similar in 1.8 mg/L and 5.4 mg/L treatments, decreased drastically on day 14 after immersion, and then the levels of testosterone to be similar with the control on day 28, i.e. about 2 ng/g. By PCR method with specific primer, sex reversed and normal males could be distinguished, and on day 71 the testosterone levels in sex reversed and normal males fish was also the same, 0.3 ng/g (P>0.05). Thus, sex reversal by immersion at a dose of 1.8 mg/L can be consider as a standard protocol for monosex tilapia production. Testosterone level in the body of MT-treated fish becomes the same to the control of less than one month post immersionhttps://journal.ipb.ac.id/index.php/jai/article/view/16884sex reversal17α-methyltestosteronetestosterone levelsimmersiontilapia
spellingShingle Muhammad Zairin Junior
Muhammad Restya Naufal
Mia Setiawati
Dian Hardianto
, Alimuddin
The sex ratio and testosterone levels in tilapia immersed in different doses of 17α-methyltestosterone
Jurnal Akuakultur Indonesia
sex reversal
17α-methyltestosterone
testosterone levels
immersion
tilapia
title The sex ratio and testosterone levels in tilapia immersed in different doses of 17α-methyltestosterone
title_full The sex ratio and testosterone levels in tilapia immersed in different doses of 17α-methyltestosterone
title_fullStr The sex ratio and testosterone levels in tilapia immersed in different doses of 17α-methyltestosterone
title_full_unstemmed The sex ratio and testosterone levels in tilapia immersed in different doses of 17α-methyltestosterone
title_short The sex ratio and testosterone levels in tilapia immersed in different doses of 17α-methyltestosterone
title_sort sex ratio and testosterone levels in tilapia immersed in different doses of 17α methyltestosterone
topic sex reversal
17α-methyltestosterone
testosterone levels
immersion
tilapia
url https://journal.ipb.ac.id/index.php/jai/article/view/16884
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