Hormones from Livestock Operations May Skew Fish Gender
Many fish population located in Indiana farms are being exposed to a certain hormone-laden, which is altering the fish hormones that affect the reproduction and development. There have been certain experiments that help further the understanding of the hormone. Fish embryos taken from Indiana' s streams were taken to be raise in different environments. Using contaminated natural and synthetic hormones. The results from the experiment were that the total of embryos were 60 percent male, which is not an accurate numbers, since the majority of the fish population tend to stay in equal amounts of both sexes. There are many factors that can contribute to the influence of fish gender, such as the water temperature, pesticides and nutrients, they shouldn't be alarm on the hormone explained Maria Sepulveda, who is a professor at Purdue's. In other experiments the percent of males born were 60, in a contaminated environments, while in an environment that is clean was 48 percent. There were more non-hormone contaminants such as pesticides and nutrients in the contaminated water, than in the uncontaminated. There are some limitations to the connection found by scientists, the focus was on the hormones, and they end up finding a connection between all contaminants. in conclusion there is a possible connection between high rate of male births and the contaminated water.
I choose this article because hormones play a big part now in many agriculture farms for plants and animals. It is interesting to know that a small thing can cause so much harm if not use wisely. Hormones that are being runoffs form excreted animals are having effects on the fish population. The hormones found in the streams in Indiana are one of the many factors, that cause gender change in the fish population. Scientist became aware because the fish population tends to stay neutral in gender, now because of the hormone there has been an increase in the amount of male born, 60 percent. Many argue that it can be many other factors such as the change of the water temperature, or pesticides. Through various experiments that were made, the amount of males was higher in the environments where the water was contaminated. In conclusion to the experiments the hormones and other factors are affecting the the gender in the fish population. This affects the the reproduction of fish which can be a problem in the future. Now that there is awareness, there are monitoring the waters to make sure that there are not high quantities of toxic chemicals, and the agriculture practices are being monitor.