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Got Nature? > Posts > Hormones from livestock operations may skew fish gender
January 03
Hormones from livestock operations may skew fish gender

Leading science magazines are sharing new findings which adds to evidence that farm runoff may alter fish hormones and affect their reproduction and development.

Purdue University researchers led by Marisol Sepúlveda, assistant professor of Forestry and Natural Resources, 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.

Can view full article on the Scientific ​American

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