Featured Research

from universities, journals, and other organizations

Researchers study flight pattern of red palm weevil in order to set more efficient control measures

Date:
July 4, 2014
Source:
Asociación RUVID
Summary:
What is the average distance that the red palm weevil covers? Does the insect’s sex, age and body size have an influence on its flight potential? Researchers have released a study that answers these and other questions. The results allow them to learn more about the flight pattern of this insect, which is threatening palm trees all over the world, in order to set new preventive and curative measures against the pest.

Rhynchophorus ferrugineus adults.
Credit: Image courtesy of Asociación RUVID

What is the average distance that the red palm weevil covers? Does the insect's sex, age and body size have an influence on its flight potential? Researchers of the Universitat Politčcnica de Valčncia have released a study that answers these and other questions. The results allow them to learn more about the flight pattern of this insect, which is threatening palm trees all over the world, in order to set new preventive and curative measures against the pest.

The study, published in the Bulletin of Entomological Research, has been developed in the laboratories of the Mediterranean Agroforestal Institute (IAM, in Spanish) in collaboration with the Department of Computer Engineering (DISCA, in Spanish) of the UPV. The work team analysed the insect behaviour with a camera fitted with a flight mill connected to a computer. They tested parameters such as the distance covered, the flight length, and average and maximum speed.

Among their conclusions, the study states that most of analysed insects -54%- covered a short distance, less than 100 metres; 36% flew between 100 and 5000 metres; and 10% was able to fly more than 5000 metres.

"If we compare the results with similar studies done under field conditions, we conclude that when an insect is detected, all the palm trees within 500 metres run the risk of being weevil-infested," says Antonia Soto, researcher at the Mediterranean Agroforestal Institute of the UPV.

With regard to the sex, they determined that it does not affect the flight potential of the insect. While in the case of age, they noticed that the average of flying individuals is larger in insects between 8 and 23 days-old than in the newly hatched insects.

"The conclusions that we have obtained support the studies that we have done under field conditions and they give significant clues about insect mobility. This information helps to improve the management of this pest and to find more efficient control measures. For example, in a newly detected source of palm trees with red palm weevil, now we know up to what distance we must apply control measures in order to avoid or at least reduce the dispersion of the pest. Or we know the safety perimeter that must be applied in an area with red palm weevil presence," adds Juan Antonio Ávalos, researcher at the Mediterranean Agroforestal Institute of the UPV.

Field tests

During the field tests, the researchers of the UPV have proved that most of the Rhynchophorus ferrugineus adults dispersed flew a short distance, less than 500 metres, which coincides with the results obtained in the laboratory. On the other hand, the maximum distance at which the adults were recaptured was 7 kilometres from the point where they were released. In the laboratory, they obtained a much larger flight potential, almost 20 kilometres.


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. J.A. Ávalos, A. Martí-Campoy, A. Soto. Study of the flying ability of Rhynchophorus ferrugineus (Coleoptera: Dryophthoridae) adults using a computer-monitored flight mill. Bulletin of Entomological Research, 2014; 104 (04): 462 DOI: 10.1017/S0007485314000121

Cite This Page:

Asociación RUVID. "Researchers study flight pattern of red palm weevil in order to set more efficient control measures." ScienceDaily. ScienceDaily, 4 July 2014. <www.sciencedaily.com/releases/2014/07/140704134627.htm>.
Asociación RUVID. (2014, July 4). Researchers study flight pattern of red palm weevil in order to set more efficient control measures. ScienceDaily. Retrieved September 30, 2014 from www.sciencedaily.com/releases/2014/07/140704134627.htm
Asociación RUVID. "Researchers study flight pattern of red palm weevil in order to set more efficient control measures." ScienceDaily. www.sciencedaily.com/releases/2014/07/140704134627.htm (accessed September 30, 2014).

Share This



More Plants & Animals News

Tuesday, September 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

California University Designs Sustainable Winery

California University Designs Sustainable Winery

Reuters - US Online Video (Sep. 27, 2014) — Amid California's worst drought in decades, scientists at UC Davis design a sustainable winery that includes a water recycling system. Vanessa Johnston reports. Video provided by Reuters
Powered by NewsLook.com
Argentina Worries Over Decline of Soybean Prices

Argentina Worries Over Decline of Soybean Prices

AFP (Sep. 27, 2014) — The drop in price of soy on the international market is a cause for concern in Argentina, as soybean exports are a major source of income for Latin America's third largest economy. Duration: 01:10 Video provided by AFP
Powered by NewsLook.com
Mama Bear, Cubs Hang out in California Backyard

Mama Bear, Cubs Hang out in California Backyard

Reuters - US Online Video (Sep. 27, 2014) — A mama bear and her two cubs climb trees, wrestle and take naps in the backyard of a Monrovia, California home. Vanessa Johnston reports. Video provided by Reuters
Powered by NewsLook.com
'Crazy' Climate Forces Colombian Farmers to Adapt

'Crazy' Climate Forces Colombian Farmers to Adapt

AFP (Sep. 26, 2014) — Once upon a time, farming was a blissfully low-tech business on Colombia's northern plains. Duration: 02:05 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