Non‐Steroidal Chemical Sex Manipulation of Tilapia

Hines, Gene A.; Watts, Stephen A.

doi:10.1111/j.1749-7345.1995.tb00216.x

Cited by 26 publications

(17 citation statements)

References 22 publications

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“…Rapid growth rates, high tolerance to low water quality, efficient food conversion, resistance to disease, good consumer acceptance and ease of spawning make tilapia a suitable fish for culture [2]. Female organism of tilapine species have a high fecundity, generally reproducing at a small size and exhibiting stunted somatic growth at higher densities, while male tilapias exhibit faster growth rates and are often the preferred gender for monosex aquaculture [3]. Synthetic steroids are commonly used to induce sex reversal in tilapia but because of the potential hazards of such steroids; the use of new chemicals is a potential alternative to be explored [4].…”

Section: Imentioning

confidence: 99%

Effects of the Aqueous Leaf Extract Of Basella Alba on Sex Reversal of Nile Tilapia, Oreochromis Niloticus

Ghosal¹,

Chakraborty²

2014

IOSRJPBS

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Section: Imentioning

confidence: 99%

Effects of the Aqueous Leaf Extract Of Basella Alba on Sex Reversal of Nile Tilapia, Oreochromis Niloticus

Ghosal¹,

Chakraborty²

2014

IOSRJPBS

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“…For oestrogen-receptor antagonism, one experiment reports a masculinizing effect of tamoxifen in a hybrid population of tilapia O. niloticus×O. aureus [97].…”

Section: In Vivo Treatments With Steroid Receptor Antagonistsmentioning

confidence: 99%

Endocrine and environmental aspects of sex differentiation in fish

Baroiller¹,

Guiguen²,

Fostier³

1999

CMLS, Cell. Mol. Life Sci.

405

274

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This paper reviews the current knowledge differentiation, new data, including molecular apconcerning the endocrine and environmental regula-proaches, have confirmed that they are key physiologitions of both gonadal sex differentiation in gonocho-cal steps in the regulation of this process. Environmental factors can strongly influence sex differentiaristic and sex inversion in hermaphroditic fish. Within the central nervous system, gonadotropins seem to tion and sex inversion in gonochoristic and hermaphroditic fish, respectively. The most important play a role in triggering sex inversion in hermaphroditic fish. In gonochorists, although potentially ac-environmental determinant of sex would appear to be temperature in the former species, and social factors tive around this period, the hypothalamo-pituitary axis is probably not involved in triggering sex differ-in the latter. Interactions between environmental factors and genotype have been suggested for both gonoentiation. Although steroids and steroidogenic enzymes are probably not the initial triggers of sex choristic and hermaphroditic fish.

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“…Rapid growth, high tolerance to low water quality, efficient food conversion, resistance to disease, ease of spawning and good consumer acceptance make tilapia a suitable fish for culture (El-Saidy and Gaber, 2005). Females of tilapine species have a high fecundity, generally reproducing at a small size and exhibiting stunted somatic growth at higher densities, while male tilapias exhibit faster growth rates and are often the preferred gender for monosex aquaculture (Hines and Watts, 1995). Synthetic steroids are commonly used to induce sex reversal in tilapia but because of the potential hazards of such steroids; the use of new chemicals is a potential alternative to be explored (Papoulias et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Efficacy of Basella alba and Tribulus terrestris extracts for production of monosex Nile tilapia, Oreochromis niloticus

Ghosal¹,

Mukherjee²,

Hancz³

et al. 2015

J App Pharm Sci

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The present study was aimed to evaluate the efficacy of Basella alba and Tribulus terrestris for induction of masculinisation in Nile tilpia. B. alba leaves and T. terrestris seeds were extracted with water, ethanol, methanol, dichloromethane, hexane and successive methanol and mixed sex juveniles of Nile tilapia were subjected to dietary treatment with the extracts at the concentration of 0.5, 1.0 and 1.5 gm/kg feed. Treatment with both the plants showed no adverse effect on general fish health. There was no significant interaction effects (P>0.05) of solvent and concentration, and solvent and plant material for percentage of males. But, significant interaction effect (P<0.05) of concentration and plant material was observed for percentage of males. Also, there was significant interaction effect (P<0.05) of solvent, concentration and plant material for percentage of males. For dietary administration of B. alba leaves, the highest percentage of males (83.2±0.7) was obtained by treatment with ethanol extract at the concentration of 1.0 gm/kg feed. For all the solvents, the highest percentage of males was observed at the concentration of 1.0 gm/kg. But, in treatment with T. terrestris seeds, the highest percentage of males (88.9±1.1) was obtained with ethanol extract at the concentration of 1.5 gm/kg feed, which was also the highest percentage of males for all the treatment categories.

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Non‐Steroidal Chemical Sex Manipulation of Tilapia

Cited by 26 publications

References 22 publications

Effects of the Aqueous Leaf Extract Of Basella Alba on Sex Reversal of Nile Tilapia, Oreochromis Niloticus

Effects of the Aqueous Leaf Extract Of Basella Alba on Sex Reversal of Nile Tilapia, Oreochromis Niloticus

Endocrine and environmental aspects of sex differentiation in fish

Efficacy of Basella alba and Tribulus terrestris extracts for production of monosex Nile tilapia, Oreochromis niloticus

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