Common Fungicide Causes Changes in Mating Behavior Generations After Exposure

Fight disinformation: Sign up for the free Mother Jones Daily newsletter and follow the news that matters.


Female rats avoid males whose great-grandfathers were exposed to a common fruit crop fungicide. Researchers from the University of Texas at Austin examined rats whose great-grandparents were exposed to the fungicide vinclozolin, which causes early onset of cancer and kidney disease in males.

Female rats can tell the difference between male descendants of rats that have or have not been exposed to vinclozolin, and strongly prefer males descended from unexposed rats. Proving for the first time that environmental contamination affects evolution through changes in mating behavior.

Vinclozolin causes changes in the male rats’ germline cells, like sperm. It doesn’t directly alter DNA, instead causing changes in elements that regulate DNA. This is known as an epigenetic change.

Early onset of disease caused by initial exposure to vinclozolin is passed down generation to generation through the germline of the males. The female rats can sense something is wrong, even though they can’t see it. Since males move beyond their birth territory when they mature, they carry their unlovable and fatal defects with them.

Hmm. Is the biosphere cannily healing itself, one little rat at a time? Or are rats truly destined to inherit the Earth? Julia Whitty

MOTHER JONES NEEDS YOUR HELP

Straight to the point: Donations have been concerningly slow for our hugely important First $500,000 fundraising campaign. We urgently need your help, and a lot of help, over the next few weeks so we can pay for the one-of-a-kind journalism you get from us.

Learn more in “Less Dreading, More Doing,” where we lay out this wild moment and how we can keep charging hard for you. And please help if you can: $5, $50, or $500—every gift from every person truly matters right now.

payment methods

MOTHER JONES NEEDS YOUR HELP

Straight to the point: Donations have been concerningly slow for our hugely important First $500,000 fundraising campaign. We urgently need your help, and a lot of help, over the next few weeks so we can pay for the one-of-a-kind journalism you get from us.

Learn more in “Less Dreading, More Doing,” where we lay out this wild moment and how we can keep charging hard for you. And please help if you can: $5, $50, or $500—every gift from every person truly matters right now.

payment methods

We Recommend

Latest

Sign up for our free newsletter

Subscribe to the Mother Jones Daily to have our top stories delivered directly to your inbox.

Get our award-winning magazine

Save big on a full year of investigations, ideas, and insights.

Subscribe

Support our journalism

Help Mother Jones' reporters dig deep with a tax-deductible donation.

Donate