Next: estrogen effects

| Print |  Email
Articles - April 2012
Thursday, March 22, 2012

BY LINDA BAKER

0412_NextEstrogen drives male snakes crazy. Crazy for other male snakes that is. In an experiment conducted in 2008-2010 in the famed garter snake caverns of Manitoba, Canada, Oregon State University zoology researchers found that boosting the estrogen level of male snakes causes them to secrete the same pheromones that females use to lure suitors; the chemically enhanced males then attracted dozens of other males eager to mate. The study, published last year, was one of the first in the field to establish estrogen as the trigger for pheromone production. The results raise concerns about the environmental impact of chemicals that mimic the effect of estrogens. Robert Mason, an OSU professor of zoology, says the estrogen used in the experiment is identical to the female hormone found in humans. “We didn’t whop these guys with huge doses,” Mason adds, noting the snakes were given the same amount of estrogen found in female snakes. He says the next step is to investigate the hormonal, cellular and genetic processes that actually cause the pheromone to be produced. Birth control pills, pesticides, PCBs and other estrogen-mimicking compounds are prevalent in the environment, Mason says. “These garter snakes could be the canaries in the coal mine.”

 

More Articles

The 100 Best Companies survey is open

News
Friday, October 24, 2014

100-best-logo-2015 500pxw-1How does your workplace stack up against competitors? How can you improve workplace practices to help recruit and retain employees? Find out by taking our 100 Best Companies to Work for in Oregon survey!


Read more...

A Complex Portrait: Immigration, Jobs and the Economy

November/December 2014
Wednesday, October 22, 2014
BY JOE ROJAS-BURKE & KIM MOORE

Oregon Business reports on the visa squeeze, the skills gap and foreign-born residents who are revitalizing rural Oregon.


Read more...

Growing a mobility cluster

News
Friday, October 31, 2014
0414 bikes bd2f6052BY LINDA BAKER | OB EDITOR

Why are there so few transportation startups in Portland?  The city’s leadership in bike, transit and pedestrian transportation has been well-documented.  But that was then — when government and nonprofits paved the way for a new, less auto centric way of life.


Read more...

Leading with the right brain

News
Tuesday, December 09, 2014
120914-manderson-thumbBY LINDA BAKER

On the eve of the Portland Ad Federation's Rosey Awards, Matt Anderson, CEO of Struck, talks about the transition from creative director to CEO, the Portland talent pool and whether data is the new black in the creative services sector.


Read more...

Old school: Paulsen's Pharmacy maintains old fashion ethos

The Latest
Thursday, December 18, 2014
121914-pharmacy-thumbBY MEGHAN NOLT

VIDEO: Under the radar — complete with a soda counter, the traditional Paulsen's Pharmacy looks to compete with big box retailers.


Read more...

OB Poll: Wineries and groceries

News
Friday, October 24, 2014

24-winethumbA majority of respondents agreed: Local vineyards should remain Oregon-owned and quality is the most important factor when determining where to eat or buy groceries.


Read more...

Two Sides of the Coin

Contributed Blogs
Wednesday, October 22, 2014
22 twosidesBY JASON NORRIS

Historically, when the leaves fall, so do the markets. This year, earnings, Europe, energy and Ebola have in common? Beyond alliteration, they are four factors that the investors are pointing to for this year’s seasonal volatility.


Read more...
Oregon Business magazinetitle-sponsored-links-02
SPONSORED LINKS