Aromatase gene expression and masculinization of Nile tilapia immersed in water 36 °C containing 17α-methyltestosterone
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چکیده
منابع مشابه
Masculinization of Nile Tilapia (Oreochromis niloticus) through Immersion in 17α- Methyltestosterone or 17α-Methyldihydrotestosterone
One of the most common techniques for producing mono-sex populations is steroid-induced sex inversion. This involves the administration of synthetic androgens (to produce male populations) or estrogens (to produce female populations). Several methods of steroid administration are possible, including injection, microencapsulation, feeding of steroid, and immersion of fry in steroid solutions. Th...
متن کاملmasculinization of blue hap (sciaenochromis ahli) treated with 17α-methyltestosterone
the objective of this study was to determine the efficacy of two procedures i.e. feeding and immersion followed by feeding, for masculinizing blue hap. two experiments (experiments i and ii) were conducted. in experiment i, feeding hormonal treatment was applied on post-yolk sac stage fry (10 days after fertilization at 27ºc). dosages of 30mg (group a) and 60mg (group b) of 17α-methyltestostero...
متن کاملSex Reversal of Tilapia: 17α-Methyltestosterone Dose Rate by Environment and Efficacy of Bull Testes
Sex reversal of newly hatched tilapia generally is accomplished via oral administration of 17α-methyltestosterone (MT), which has been incorporated into a starter fish feed at 60 mg MT/kg feed (Popma and Green, 1990). Although the use of the 60 mg MT/kg feed dose consistently yields populations comprised of less than 5% females (i.e., > 95% males), this has not been shown to be the optimal dose...
متن کاملMasculinization of Tilapia through Immersion in 17 α - Methyltestosterone or 17 α - Methyldihydrotestosterone
All-male populations are used in tilapia aquaculture because the culture of mixed-sex populations often results in precocious maturation and early reproduction (Mires, 1995). Early maturation shunts energy to gonadal rather than somatic growth. In addition, reproduction in ponds may lead to the harvest of many unmarketable fry. Individuals in mono-sex populations have increased somatic growth r...
متن کاملEffect of 17α-methyltestosterone (MT) on oxidation stress in the liver of juvenile GIFT tilapia, Oreochromis niloticus
The normal dose of 17α-methyltestosterone (MT) used in fish farming was 60 mg/L, and now the analysis of residual androgens was carried out in waste water obtained from the Beijing area, which could be detected in levels ranging from 4.1 to 7.0 ng/L. For the purpose of aquatic early warning, the present study clearly demonstrated that chronic exposure by higher concentration of MT than environm...
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ژورنال
عنوان ژورنال: Jurnal Akuakultur Indonesia
سال: 2017
ISSN: 2354-6700,1412-5269
DOI: 10.19027/jai.16.1.116-123