This Scientific American article reviews research conducted that identified that streams near livestock confinement farms have varied sex ratios (not 50/50).
"Purdue University researchers raised fathead minnow embryos in water taken from two Indiana streams that are contaminated with natural and synthetic hormones from manure spread on fields. The embryos turned out 60 percent male; fish typically are born with roughly equal numbers of males and females."
What do you think about their research? What can be done about this? Does this affect your?
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