Two-year study by SIU researchers finds PCBs make minnows into bad dads
A mother’s nurturing of her offspring is a well-known story in the natural world. But when it comes to fish, it’s dad who is often tasked with the care of young ones.
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David Coulter, a post-doctoral researcher at Southern Illinois University Carbondale, holds a fathead minnow at SIU’s Center for Fisheries, Aquaculture, and Aquatic Sciences. A meticulous, two-year study by a team of SIU researchers found that PCBs in the environment make the male of the species into poor parents. The research, recently published in American Chemical Society’s Environmental Science & Technology journal, found that lifelong exposure to PCBs led to decreased nurturing behavior by male fathead minnows and lower survival rates of their offspring. (Photo by Russell Bailey)
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