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Research On The Effects Of Japanese Quails Exposure To Synthetics Hormones

860 words - 4 pages

Previous literature has found that various environmental contaminants, such as endocrine disrupters have detrimental effects on organisms such as the Japanese quails. A vast amount of studies have been conducted to analyze characteristics such as reproductive behavior in mammals however the current study adds on knowledge to an understudied population, the avian species specifically the Japanese quail. Exposure to these estrogen receptor antagonists has seemed to take a toll on the reproductive behavior of such species that the researchers of the current study main purpose were to formulate an endocrinological standardized test. This standardized test would help identify insidious effects of the estrogen receptor in the Japanese male quail before the population of the avian species is significantly reduced. Researchers in order to evaluate the effects of the environmental contaminants, they would have to observe sexual behavior of the quails. Not only is sexual behavior responsible of reproduction and maintaining the species alive. It is also noted from previous literature that the sexual behavior of the Japanese quail is said to be characterized as by involving great amounts of physical strength. Quails who fail to adhere to the typical male sexual behavior would be facile to identify those who be considered deviant. The hypothesis of the current study was that exposure to synthetic hormones such as ethinylestradiol and diethylstilbestrol would alter the copulatory behavior of the male Japanese quails.
The current study carried out its experiment by incubating fertilized Japanese quail eggs at a stable temperature of 37.5C. Synthetic estrogens such as ethinylestradiol and diethylstilbestrol were injected in the fertilized eggs. Those treated with the synthetic hormone of diethylstilbestrol would be introduced to male hormone of testosterone. Upon hatching all the birds were placed in separate cages. All male birds were coupled with a female recessive counterpart. Sexual behavior would be observed for approximately two minutes in the cages. Subsequently, when the copulatory behavior was witnessed blood samples were collected from all the male birds in order to calculate testosterone levels. Finally, all birds were sacrificed in order to calculate their body masses and testes weights.
The results of the study indicated that the hypothesis that exposure to synthetic hormones such the ethinylestradiol and diethylstilbestrol would alter the copulatory behavior of the male Japanese quails was supported. Copulatory behavior did decrease for the male quail birds that were treated with diethylstilbestrol. When the killing of all male Japanese quail birds was carried out, researchers noticed that there were significant testicular changes. They noticed that all...

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