Featured Research

from universities, journals, and other organizations

Mites to save Valencian orange exports

Date:
November 19, 2012
Source:
Asociación RUVID
Summary:
A new study by researchers in Spain and Belgium has found that soil-dwelling predatory mites are a perfect partner to address the plague of thrips in citrus caused by Pezothrips kellyanus, a tiny insect that affects the skin of the fruit.

Effects of the plague of thrips.
Credit: Image courtesy of Asociación RUVID

A study coordinated by researchers from the Universitat Politècnica de València, in collaboration with the University of Navarra and the Belgian company Biobest Belgium NV has found that soil-dwelling predatory mites are a perfect partner to address the plague of thrips in citrus caused by Pezothrips kellyanus, a tiny insect that affects the skin of the fruit.

His work has been published recently in the journal Biological Control.

Valencia professor Ferran García explains that thrips are a serious economic problem for the citrus sector: "This bug causes a round scar on the top of fruit. This is a purely aesthetic condition, but with serious consequences. For example, half of the Valencian production is exported and a fruit affected by this pest can not be exported, with the economic losses it entails."

To try to find a solution to this problem, researchers began to study for the first time the fauna in the orchard soil and its effect on the pest. "This is the first study in Spain that has evaluated the behaviour of soil mites and how their presence can affect the thrips population and, therefore, the presence or absence of damage to the crop," says the researcher Cristina Navarro.

The Universitat Politècnica de València experts analyzed four citrus orchards located in Valencia and identified fifteen species of eight families of mites, the most abundant were Parasitus americanus (Parasitidae) and Gaeolaelaps aculeifer (Hypoaspis aculeifer). From the results of field and laboratory tests, the mite that best could act against the plague is Gaeolaelaps aculeifer. "The study concluded that there is a direct relationship between a high presence of this mite in the earth and a low presence of thrips on the fruit. This suggests that these mites could be an alternative to the chemical products currently used," says Ferran García.

The more manure, less trips

The researchers also conducted several tests to determine if foliar applications of insecticides or the addition of organic matter to the soil affects the abundance of soil-dwelling predatory mites. "Those lands to which manure composting is added have more predatory mites, while a treatment with the insecticide chlorpyrifos does not affect their number," adds Cristina Navarro.


Story Source:

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


Journal Reference:

  1. Cristina Navarro-Campos, Apostolos Pekas, María L. Moraza, Amparo Aguilar, Ferran Garcia-Marí. Soil-dwelling predatory mites in citrus: Their potential as natural enemies of thrips with special reference to Pezothrips kellyanus (Thysanoptera: Thripidae). Biological Control, 2012; 63 (2): 201 DOI: 10.1016/j.biocontrol.2012.07.007

Cite This Page:

Asociación RUVID. "Mites to save Valencian orange exports." ScienceDaily. ScienceDaily, 19 November 2012. <www.sciencedaily.com/releases/2012/11/121119093844.htm>.
Asociación RUVID. (2012, November 19). Mites to save Valencian orange exports. ScienceDaily. Retrieved October 20, 2014 from www.sciencedaily.com/releases/2012/11/121119093844.htm
Asociación RUVID. "Mites to save Valencian orange exports." ScienceDaily. www.sciencedaily.com/releases/2012/11/121119093844.htm (accessed October 20, 2014).

Share This



More Plants & Animals News

Monday, October 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

White Lion Cubs Born in Belgrade Zoo

White Lion Cubs Born in Belgrade Zoo

AFP (Oct. 20, 2014) — Two white lion cubs, an extremely rare subspecies of the African lion, were recently born at Belgrade Zoo. They are being bottle fed by zoo keepers after they were rejected by their mother after birth. Duration: 00:42 Video provided by AFP
Powered by NewsLook.com
Traditional Farming Methods Gaining Ground in Mali

Traditional Farming Methods Gaining Ground in Mali

AFP (Oct. 20, 2014) — He is leading a one man agricultural revolution in Mali - Oumar Diatabe uses traditional farming methods to get the most out of his land and is teaching others across the country how to do the same. Duration: 01:44 Video provided by AFP
Powered by NewsLook.com
Goliath Spider Will Give You Nightmares

Goliath Spider Will Give You Nightmares

Buzz60 (Oct. 20, 2014) — An entomologist stumbled upon a South American Goliath Birdeater. With a name like that, you know it's a terrifying creepy crawler. Sean Dowling (@SeanDowlingTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-Fuel Impala

3BL Media (Oct. 20, 2014) — Hey, Doc! Sewage, Beer and Food Scraps Can Power Chevrolet’s Bi-fuel Impala Video provided by 3BL
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