Featured Research

from universities, journals, and other organizations

First African study on biodiversity in genetically modified maize finds insects abundant

Date:
February 3, 2014
Source:
Entomological Society of America
Summary:
A new study from South Africa shows that the biodiversity of insects and related arthropods in genetically modified crop fields is essentially the same as that among conventional crops.

Maize growing in South Africa. New research has shown no significant differences in abundance or diversity in detritivores, herbivores, predators, or parasitoids between genetically modified maize and conventional maize.
Credit: © nature / Fotolia

Previous studies from China, Spain, and the United States on genetically modified (GM) rice, cotton, and maize have concluded that the biodiversity of insects and related arthropods in GM crop fields was essentially the same as that among conventional crops. Now a new study from South Africa shows similar results.

Related Articles


The study is described in an article called "Comparative Diversity of Arthropods on Bt Maize and Non-Bt Maize in two Different Cropping Systems in South Africa," which appears in the February 2014 issue of Environmental Entomology.

"The aims of the study were to compile a checklist of arthropods that occur on maize in South Africa and to compare the diversity and abundance of arthropods and functional groups on Bt maize and non-Bt maize," the authors wrote. "Results from this short-term study indicated that abundance and diversity of arthropods in maize and the different functional guilds were not significantly affected by Bt maize, either in terms of diversity or abundance."

A total of 8,771 arthropod individuals, comprising 288 morphospecies, were collected from 480 plants sampled from Bt maize and non-Bt maize fields over a two-year period. The researchers found no significant differences in abundance or diversity in detritivores, herbivores, predators, or parasitoids.

"The results of our study indicate that arthropod diversity, even in high-input farming systems, is as high as in subsistence farming systems" said Dr. Johnnie van den Berg, a professor at North-West University and one of the co-authors of the article. "More recently, surveys of arthropod and plant beta-diversity inside and adjacent to maize fields have been completed during which 30,000 arthropods and 15,000 plant individuals were surveyed along a 1,000 kilometer transect. It seems that maize field diversity is homogenized and field margins had a high beta diversity," he added.


Story Source:

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


Journal Reference:

  1. J. Truter, H. Van Hamburg, J. Van Den Berg. Comparative Diversity of Arthropods on Bt Maize and Non-Bt Maize in two Different Cropping Systems in South Africa. Environmental Entomology, 2014; 43 (1): 197 DOI: 10.1603/EN12177

Cite This Page:

Entomological Society of America. "First African study on biodiversity in genetically modified maize finds insects abundant." ScienceDaily. ScienceDaily, 3 February 2014. <www.sciencedaily.com/releases/2014/02/140203084610.htm>.
Entomological Society of America. (2014, February 3). First African study on biodiversity in genetically modified maize finds insects abundant. ScienceDaily. Retrieved April 21, 2015 from www.sciencedaily.com/releases/2014/02/140203084610.htm
Entomological Society of America. "First African study on biodiversity in genetically modified maize finds insects abundant." ScienceDaily. www.sciencedaily.com/releases/2014/02/140203084610.htm (accessed April 21, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Tuesday, April 21, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: Maine Storm Surge Sparks Power Explosions

Raw: Maine Storm Surge Sparks Power Explosions

AP (Apr. 21, 2015) — Police dash cam video shows a series of explosions along the beach in Maine as heavy storm surge soaked electrical transformers. (April 21) Video provided by AP
Powered by NewsLook.com
Searching For The Loch Ness Monster? Try Google Street View

Searching For The Loch Ness Monster? Try Google Street View

Newsy (Apr. 21, 2015) — For the anniversary of the notorious "Surgeon&apos;s Photo" of the Loch Ness monster, Google used Street View to let those online join the search. Video provided by Newsy
Powered by NewsLook.com
Going Ape: Sierra Leone Chimpanzees Hail Ebola Retreat

Going Ape: Sierra Leone Chimpanzees Hail Ebola Retreat

AFP (Apr. 21, 2015) — As money runs out at Tacugama Chimpanzee Sanctuary in Sierra Leone, around 85 chimps are facing homelessness. The centre closed when the Ebola epidemic was ravaging the country but now that closure is beginning to look permanent. Video provided by AFP
Powered by NewsLook.com
Solar Plane Completes 6th Leg of Quest to Circumnavigate Globe

Solar Plane Completes 6th Leg of Quest to Circumnavigate Globe

AFP (Apr. 21, 2015) — Solar Impulse 2 lands in the Chinese city of Nanjing, finishing the sixth stage of its landmark 12-leg quest to circumnavigate the globe powered only by the sun. Duration: 00:42 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:

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