Featured Research

from universities, journals, and other organizations

Scientists Seeking Biocontrols Against Sharpshooters

Date:
November 3, 2005
Source:
USDA/Agricultural Research Service
Summary:
Help may be on the way from Agricultural Research Service (ARS) scientists in Argentina and Texas for grape growers in California who are battling the glassy winged sharpshooter. A parasitic wasp could help growers ward off the glassy winged sharpshooters (GWSS) that have been spreading plant-damaging Xylella fastidiosa bacteria in southern California vineyards since the 1990s.

This parasitic wasp, Gonatocerus triguttatus, lays its eggs in glassy-winged sharpshooter eggs embedded in leaves. Two new wasps, G. tuberculifemur and G. metanotalis, have recently been found to attack this sharpshooter's eggs as well.
Credit: Photo by Reyes Garcia III

Help may be on the way from Agricultural Research Service (ARS) scientists in Argentina and Texas for grape growers in California who are battling the glassy winged sharpshooter.

A parasitic wasp could help growers ward off the glassy winged sharpshooters (GWSS) that have been spreading plant-damaging Xylella fastidiosa bacteria in southern California vineyards since the 1990s. Now sharpshooters have made it to Hawaii and Tahiti. ARS scientists in Weslaco, Texas, have shown that the invasive GWSS in California is from Texas--part of the pest's native habitat.

X. fastidiosa causes a variety of costly plant diseases, including Pierce's disease in grapevines and leaf scorch in oleanders. Grape growers in Riverside and San Diego counties have lost about $38 million due to Pierce's disease.

For over a decade, ARS scientists and researchers at the University of California-Riverside and the California Department of Food and Agriculture have been seeking biocontrol strategies to control the sharpshooter.

At the ARS South American Biological Control Laboratory (SABCL) in Hurlingham, Argentina, researchers have been evaluating wasps that lay their eggs inside GWSS eggs, which are later consumed by the wasp young as they hatch and feed.

The primary candidate for this form of biological control is currently Gonatocerus tuberculifemur from South America. G. tuberculifemur is being tested at both the SABCL and the Beneficial Insects Research Unit in Weslaco, but the wasp has not yet been released.

Researchers in Weslaco are also searching for nymphal parasitoids in their native range in Texas. To date, all the biological control Gonatocerus species agents are egg parasitoids.

ARS is the U.S. Department of Agriculture's chief scientific research agency.


Story Source:

The above story is based on materials provided by USDA/Agricultural Research Service. Note: Materials may be edited for content and length.


Cite This Page:

USDA/Agricultural Research Service. "Scientists Seeking Biocontrols Against Sharpshooters." ScienceDaily. ScienceDaily, 3 November 2005. <www.sciencedaily.com/releases/2005/11/051103083252.htm>.
USDA/Agricultural Research Service. (2005, November 3). Scientists Seeking Biocontrols Against Sharpshooters. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/2005/11/051103083252.htm
USDA/Agricultural Research Service. "Scientists Seeking Biocontrols Against Sharpshooters." ScienceDaily. www.sciencedaily.com/releases/2005/11/051103083252.htm (accessed April 17, 2014).

Share This



More Plants & Animals News

Thursday, April 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Change of Diet Helps Crocodile Business

Change of Diet Helps Crocodile Business

Reuters - Business Video Online (Apr. 16, 2014) Crocodile farming has been a challenge in Zimbabwe in recent years do the economic collapse and the financial crisis. But as Ciara Sutton reports one of Europe's biggest suppliers of skins to the luxury market has come up with an unusual survival strategy - vegetarian food. Video provided by Reuters
Powered by NewsLook.com
Could Even Casual Marijuana Use Alter Your Brain?

Could Even Casual Marijuana Use Alter Your Brain?

Newsy (Apr. 16, 2014) A new study conducted by researchers at Northwestern and Harvard suggests even casual marijuana use can alter your brain. Video provided by Newsy
Powered by NewsLook.com
Thousands Of Vials Of SARS Virus Go Missing

Thousands Of Vials Of SARS Virus Go Missing

Newsy (Apr. 16, 2014) A research institute in Paris somehow misplaced more than 2,000 vials of the deadly SARS virus. Video provided by Newsy
Powered by NewsLook.com
Raw: Three Rare White Tiger Cubs Debut at Zoo

Raw: Three Rare White Tiger Cubs Debut at Zoo

AP (Apr. 16, 2014) The Buenos Aires Zoo debuted a trio of rare white Bengal tiger cubs on Wednesday. (April 16) Video provided by AP
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