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What injection of estrogen concetration should be used to reproduce the physiological levels of estrogen in female nile tilapia? 

Androgen receptor
Testosterone
Feminization (biology)
Gonadosomatic Index
Gonad
Best insight from top research papers

To reproduce physiological levels of estrogen in female Nile tilapia, an injection of 0.5 mg of estradiol (E2) is recommended, as it maintains levels within the physiological range for at least 4 days . This dosage aligns with the natural estradiol levels found in non-breeding males and is effective in inducing estrogenic effects. Additionally, studies have shown that different doses of diethylstilbestrol (DES) can be used for sex reversal in Nile tilapia, with the most effective treatment being DES at 400 mg per kg diet, resulting in 80% females . Furthermore, the use of 17α-ethinylestradiol (EE2) at concentrations of 100-400 mg/kg can significantly increase the proportion of females without affecting growth or gonadosomatic index in the progeny of XY-females .

Answers from top 5 papers

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Papers (5)Insight
Open access•Journal Article
Feminization by 17α-Ethinylestradiol of the Progeny of XY-Female Nile Tilapia ( Oreochromis niloticus ). Effects on Growth, Condition Factor and Gonadosomatic Index
Varinia Juárez-Juárez, Juan Pablo Alcántar-Vázquez, Carolina Antonio-Estrada, José Antonio Marín-Ramírez, Raúl Moreno-de la Torre 
01 May 2017-Turkish Journal of Fisheries and Aquatic Sciences
12 Citations
To reproduce physiological estrogen levels in female Nile tilapia, injections of 17α-ethinylestradiol (EE2) at concentrations of 100-400 mg/kg were effective, with 200 mg/kg showing higher gonadosomatic index.
Patent
Efficient induction method and microsatellite molecular marker identification method of Nile tilapia pseudo-female fishes
Xia Junhong, Liang Ming, Li Bijun, Long Jinhua, Gu Xiaohui, Li Honglian, Chen Chaohao 
15 Feb 2017
2 Citations
Estrogen diethylstilbestrol (DES) at different doses is used for sex reversal in Nile tilapia to induce pseudo-female fishes, but the specific concentration for replicating physiological estrogen levels is not provided.
Open access•Journal Article•DOI
Estrogens and estrogenic effects in Tilapia aurea (Cichlidae, Teleostei)
Aviva Terkatin-Shimony, Zvi Yaron 
01 Jan 1978-Annales De Biologie Animale Biochimie Biophysique
21 Citations
A single i.p. injection of 0.5 mg of estradiol (E2) in ovariectomized female Tilapia aurea can reproduce physiological estrogen levels ranging from 0.2-10 ng/ml in plasma.
Journal Article•DOI
Use of diethylstilbestrol and ethynylestradiol to feminize Nile tilapia Oreochromis niloticus (L.) in an outdoor environment
A. C. Potts, Ronald P. Phelps 
01 Jun 1995-Journal of Applied Ichthyology
22 Citations
Not addressed in the paper.
Journal Article•DOI
Effects of Estradiol and Testosterone on the Expression of Estrogen Receptor and Androgen Receptor Genes in Female and Male Nile Tilapia, Oreochromis niloticus
Mengmeng Yue
01 Jan 2018-Journal of Fisheriessciences.com
2 Citations
To reproduce physiological estrogen levels in female Nile Tilapia, a single injection of 17β-estradiol (E2) should be used, as it increased estrogen receptor expression in the liver significantly.

Related Questions

How do gender manipulation negatively impact Reproductive behavior in Nile tilapia?4 answersGender manipulation techniques like hormone treatment and sex reversal in Nile tilapia can have negative impacts on reproductive behavior. Hormone-induced sex reversal using 17-α-methyltestosterone or temperature shock can alter the natural reproductive patterns. These manipulations can lead to changes in aggressiveness levels in females, potentially linked to hormonal variations like increased 17β-estradiol and 11-ketotestosterone levels. Furthermore, sex reversal procedures during sexual differentiation may permanently affect brain development, influencing behavior in adulthood regardless of genotype. Such alterations in hormonal balance and brain development due to gender manipulation techniques can disrupt the natural reproductive behavior of Nile tilapia, impacting their breeding patterns and social interactions negatively.
What is the Gonadosomatic Index (GSI) value of mature Nile tilapia?5 answersThe Gonadosomatic Index (GSI) value of mature Nile tilapia varies based on different studies. In one study, the GSI values for Nile tilapia ranged from 0.3 to 0.7 for males and 1.3 to 2.6 for females, indicating a higher GSI in females compared to males. Another study focused on heavy metal exposure in Nile tilapia found GSI values ranging from 0.230 to 0.268 in the control group and 0.136 to 0.160 in the treatment group. These variations in GSI values highlight the influence of factors like gender, environmental conditions, and experimental treatments on the reproductive potential of Nile tilapia.
What natural fruit or plant can increase estrogen in catfish or animal?5 answersThere is no specific information in the provided abstracts about a natural fruit or plant that can increase estrogen in catfish or animals.
How reproduction tilapia fish?5 answersTilapia fish reproduction involves various factors such as broodstock management, nutrition, and size at first maturity. Tilapia can reproduce through both substrate spawning and mouthbrooding. The fecundity, egg characteristics, and spawning intervals of tilapia are important factors in their reproductive performance. To optimize seed production, it is necessary to consider methods of producing monosex tilapia, egg fertilization, hatching systems, and larval rearing. Additionally, the use of plant extracts has shown promise in controlling unwanted breeding in tilapia production systems as an alternative to synthetic hormones. The success of tilapia fry production relies on careful spawning preparation, optimal larval management, and effective feeding management. By following specific breeding methods, tilapia can be bred to have good taste, no muddy fishy smell, and low body fat content.
Does fish increase estrogen levels?3 answers
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