Featured Research

from universities, journals, and other organizations

Popular herbicide affects sexual development in frogs, research finds

Date:
December 5, 2009
Source:
University of Ottawa
Summary:
The controversy surrounding the unintended effects of herbicide and pesticide use has intensified as researchers have identified that atrazine, a heavily-used herbicide, alters the sexual development in frogs.

The controversy surrounding the unintended effects of herbicide and pesticide use has intensified as researchers from the University of Ottawa's Department of Biology have identified that atrazine, a heavily-used herbicide, alters the sexual development in frogs.
Credit: iStockphoto/Sven Hoppe

The controversy surrounding the unintended effects of herbicide and pesticide use has intensified as researchers from the University of Ottawa's Department of Biology have identified that atrazine, a heavily-used herbicide, alters the sexual development in frogs.

Related Articles


There have been numerous scientific and journalistic reports on the detrimental effects of herbicides, including atrazine, yet investigations by other research teams report no adverse effects of the popular herbicide.

In an attempt to help resolve differences between the various reports, Dr. Vance Trudeau and his team at the University of Ottawa's Centre for Advanced Research in Environmental Genomics developed a system to evaluate the effects of a commercial formulation of atrazine. Specifically, PhD student Valιrie Langlois applied it to outdoor tanks where tadpoles of leopard frogs were kept for an entire spring and summer. Under these semi-natural conditions in mesocosms, the levels of atrazine were low and comparable to those measured in the Canadian environment.

At the end of the summer, the results showed that atrazine levels in the tanks were at levels within currently acceptable guidelines. However, researchers also found that the herbicide reduced the number of tadpoles reaching the froglet stage. Also noteworthy was that atrazine had a feminizing effect on the animal, resulting in sex ratios favouring females, with a reduced number of males.

This study, recently available online in the journal Environmental Health Perspectives, raises important questions about the level of atrazine in the environment, and its negative effects on animal development.

Atrazine is one of the top selling herbicides used worldwide and was designed to inhibit weed growth in cornfields. It is so widely used that it can be detected in many rivers, streams and in some water supplies. This has raised the alarm on the possibility of other serious detrimental environmental effects.


Story Source:

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


Cite This Page:

University of Ottawa. "Popular herbicide affects sexual development in frogs, research finds." ScienceDaily. ScienceDaily, 5 December 2009. <www.sciencedaily.com/releases/2009/12/091203225038.htm>.
University of Ottawa. (2009, December 5). Popular herbicide affects sexual development in frogs, research finds. ScienceDaily. Retrieved November 28, 2014 from www.sciencedaily.com/releases/2009/12/091203225038.htm
University of Ottawa. "Popular herbicide affects sexual development in frogs, research finds." ScienceDaily. www.sciencedaily.com/releases/2009/12/091203225038.htm (accessed November 28, 2014).

Share This


More From ScienceDaily



More Earth & Climate News

Friday, November 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Japan's Mt. Aso Volcano Spews Rocks

Raw: Japan's Mt. Aso Volcano Spews Rocks

AP (Nov. 28, 2014) — A volcano in southern Japan is spewing volcanic magma rocks. A regional weather observatory says this could be Mt. Aso's first magma eruption in 22 years. (Nov. 28) Video provided by AP
Powered by NewsLook.com
Scientists Find Invisible Space Shield Protecting Earth

Scientists Find Invisible Space Shield Protecting Earth

Newsy (Nov. 27, 2014) — An invisible barrier is keeping dangerous super fast electrons from interfering with our atmosphere, but scientists aren't entirely sure how. Video provided by Newsy
Powered by NewsLook.com
Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Bolivian Recycling Initiative Turns Plastic Waste Into School Furniture

Reuters - Innovations Video Online (Nov. 26, 2014) — Innovative recycling project in La Paz separates city waste and converts plastic garbage into school furniture made from 'plastiwood'. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Blu-Ray Discs Getting Second Run As Solar Panels

Blu-Ray Discs Getting Second Run As Solar Panels

Newsy (Nov. 26, 2014) — Researchers at Northwestern University are repurposing Blu-ray movies for better solar panel technology thanks to the discs' internal structures. Video provided by Newsy
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:

Strange & Offbeat Stories

 

Plants & Animals

Earth & Climate

Fossils & Ruins

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