Featured Research

from universities, journals, and other organizations

Bisphenol A affects sex-specific reproductive behaviors in a monogamous animal species

Date:
February 11, 2013
Source:
University of Missouri-Columbia
Summary:
A series of experiments studied the effects of prenatal exposure to bisphenol A on later reproductive-associated behaviors using a socially and genetically monogamous rodent, the California mouse, which may better mirror most human societies than other rodents.

Parents, teachers and psychologists know boys and girls behave differently. However, that difference isn't taken into account by most methods used to assess the risk to children from chemical exposure, according to Cheryl Rosenfeld, associate professor of biomedical sciences in the University of Missouri's Bond Life Sciences Center. A series of experiments by Rosenfeld studied the effects of prenatal exposure to bisphenol A (BPA) on later reproductive-associated behaviors using a socially and genetically monogamous rodent, the California mouse, which may better mirror most human societies than other rodents.

She observed harmful alterations to behaviors that affect the likelihood of successfully attracting a mate and reproducing. However, developmental exposure to BPA altered the behaviors of males differently than females. In females, BPA reduced exploratory behavior that is essential for them to forage to provide nutritional support to her offspring. In contrast, California mice males exposed to BPA demonstrated reduced territorial marking, which is essential for them to defend a home range and their mate. Rosenfeld suggests that these animal findings might provide a framework to guide human risk assessment studies in the sense that such studies may need to consider that pre- and post-natal exposure to BPA might differentially impact boys' versus girls' behaviors.

The American public comes into daily contact with the chemical bisphenol A (BPA) as it is present in a wide assortment of products, including some types of paper receipts, plastic containers and canned goods, including beer and soda cans. The concern of many scientists is that the chemical can mimic the effect of female hormones in the human body. Studies looking for behavioral effects of BPA in children often focus on expression of general behaviors, such as aggression, anxiety or other traits, but more refined assessments are needed for boys versus girls, according to Rosenfeld.

"We use animal models to provide informative decisions about our own health and the risks associated with BPA," Rosenfeld said. "What we have observed in those models is that BPA affects male rodents differently than females. Risk assessment studies examining the impacts of BPA in humans could be more accurate if they took sex into account when monitoring for changes in children's behavioral patterns."

Rosenfeld's most recent study observed the influence of prenatal BPA exposure on California mice, whereas earlier studies had used deer mice. The two rodent species have contrasting mating behaviors. California mice are monogamous, as opposed to the polygamous deer mice. Although BPA affected the California mice differently than the deer mice, both rodent species' behaviors were altered in ways that would decrease their ability to successfully mate and pass on their genes to future generations. Since two species of rodents with different mating patterns were both affected, it suggests that BPA disrupts essential reproductive-associated behaviors that are species- and sex-specific.


Story Source:

The above story is based on materials provided by University of Missouri-Columbia. Note: Materials may be edited for content and length.


Journal Reference:

  1. Scott A. Williams, Eldin Jasarevic, Gregory M. Vandas, Denise A. Warzak, David C. Geary, Mark R. Ellersieck, R. Michael Roberts, Cheryl S. Rosenfeld. Effects of Developmental Bisphenol A Exposure on Reproductive-Related Behaviors in California Mice (Peromyscus californicus): A Monogamous Animal Model. PLoS ONE, 2013; 8 (2): e55698 DOI: 10.1371/journal.pone.0055698

Cite This Page:

University of Missouri-Columbia. "Bisphenol A affects sex-specific reproductive behaviors in a monogamous animal species." ScienceDaily. ScienceDaily, 11 February 2013. <www.sciencedaily.com/releases/2013/02/130211134936.htm>.
University of Missouri-Columbia. (2013, February 11). Bisphenol A affects sex-specific reproductive behaviors in a monogamous animal species. ScienceDaily. Retrieved July 30, 2014 from www.sciencedaily.com/releases/2013/02/130211134936.htm
University of Missouri-Columbia. "Bisphenol A affects sex-specific reproductive behaviors in a monogamous animal species." ScienceDaily. www.sciencedaily.com/releases/2013/02/130211134936.htm (accessed July 30, 2014).

Share This




More Plants & Animals News

Wednesday, July 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Otters Enjoy Water Slides at Japan Zoo

Raw: Otters Enjoy Water Slides at Japan Zoo

AP (July 30, 2014) River otters were hitting the water slides to beat the summer heatwave on Wednesday at Ichikawa City's Zoological and Botanical Garden. (July 30) Video provided by AP
Powered by NewsLook.com
In Virginia, the Rise of a New Space Coast

In Virginia, the Rise of a New Space Coast

AP (July 30, 2014) Every summer, tourists make the pilgrimage to Chincoteague Island, Va. to see wild ponies cross the Assateague Channel. But, it's the rockets sending to supplies to the International Space Station that are making this a year-round destination. (July 30) Video provided by AP
Powered by NewsLook.com
Rodents Rampant in Gardens Around Louvre

Rodents Rampant in Gardens Around Louvre

AP (July 29, 2014) Food scraps and other items left on the grounds by picnickers brings unwelcome visitors to the grounds of the world famous and popular Louvre Museum in Paris. (July 29) Video provided by AP
Powered by NewsLook.com
Jane Goodall Warns Great Apes Face Extinction

Jane Goodall Warns Great Apes Face Extinction

AFP (July 29, 2014) The world's great apes face extinction within decades, renowned chimpanzee expert Jane Goodall warned Tuesday in a call to arms to ensure man's closest relatives are not wiped out. Duration: 00:58 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins