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

We've never been very good at being conservative.

And usually, that serves us well in doing the ambitious, hard-hitting journalism that you turn to Mother Jones for. But it also means we can't afford to come up short when it comes to scratching together the funds it takes to keep our team firing on all cylinders, and the truth is, we finished our budgeting cycle on June 30 about $100,000 short of our online goal.

This is no time to come up short. It's time to fight like hell, as our namesake would tell us to do, for a democracy where minority rule cannot impose an extreme agenda, where facts matter, and where accountability has a chance at the polls and in the press. If you value our reporting and you can right now, please help us dig out of the $100,000 hole we're starting our new budgeting cycle in with an always-needed and always-appreciated donation today.

payment methods

We've never been very good at being conservative.

And usually, that serves us well in doing the ambitious, hard-hitting journalism that you turn to Mother Jones for. But it also means we can't afford to come up short when it comes to scratching together the funds it takes to keep our team firing on all cylinders, and the truth is, we finished our budgeting cycle on June 30 about $100,000 short of our online goal.

This is no time to come up short. It's time to fight like hell, as our namesake would tell us to do, for a democracy where minority rule cannot impose an extreme agenda, where facts matter, and where accountability has a chance at the polls and in the press. If you value our reporting and you can right now, please help us dig out of the $100,000 hole we're starting our new budgeting cycle in with an always-needed and always-appreciated donation today.

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