Featured Research

from universities, journals, and other organizations

Fungi Pathogenic To Insects Are New Tool In Fight Against Chagas Disease

Date:
May 12, 2009
Source:
Public Library of Science
Summary:
Entomopathogenic fungi may be a safe and efficient means of controlling Triatoma infestans, the bug that helps spread Chagas disease, according to new research conducted in Argentina. The study shows the success of the fungi to kill bugs resistant to current control methods.

Entomopathogenic fungi may be a safe and efficient means of controlling Triatoma infestans, the bug that helps spread Chagas disease, according to new research conducted in Argentina. The study shows the success of the fungi to kill bugs resistant to current control methods.

Chagas disease is the most relevant parasitic disease in Latin America, being a major burden that affects mostly poor human populations living in rural areas. The parasite Trypanosoma cruzi is mainly transmitted through blood-feeding triatomine bugs; in the southern Cone of South America the most prominent vector is Triatoma infestans. Current control strategies based on residual chemical insecticide application are threatened by the emergence of pyrethroid resistance.

The researchers, led by Patricia Juαrez, performed both laboratory and field experiments showing that the entomopathogenic fungus Beauveria bassiana is virulent against bug populations from pyrethroid-resistant foci in the Argentina/Bolivia border. An attraction-infection trap was developed and tested during a 15-day period in field assays performed in two rural villages, demonstrating that more than 50% of the bugs detected were killed by fungal infection. By existing vector population models, the bug population reduction was estimated to reduce the risk of acquiring the parasite infection.

This approach might also prove useful at different settings, e.g. peridomiciliary environments where current tactics and procedures are reported to fail, and rural communities located in remote areas inaccessible to sanitary control teams. The authors emphasize that these results might help to provide a safe and efficient alternative to overcome bug pyrethroid-resilience in the short term, and might be useful to control other Chagas disease vectors as well.

  Partial financial support came from the Pan American Health Organization/World Health Organization/Special Program for Research and Training in Tropical Disease (A20433), the Agencia Nacional de Promocion Cientifica y Tecnologica, Argentina (PICT 01-14174), and the Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET), Argentina, to MPJ. The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript.

NP, SJM, JRG, and MPJ have a patent pending on a blood-sucking insect trap, and a method to detect and control those insects.


Story Source:

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


Journal Reference:

  1. Pedrini et al. Control of Pyrethroid-Resistant Chagas Disease Vectors with Entomopathogenic Fungi. PLoS Neglected Tropical Diseases, 2009; 3 (5): e434 DOI: 10.1371/journal.pntd.0000434

Cite This Page:

Public Library of Science. "Fungi Pathogenic To Insects Are New Tool In Fight Against Chagas Disease." ScienceDaily. ScienceDaily, 12 May 2009. <www.sciencedaily.com/releases/2009/05/090511210409.htm>.
Public Library of Science. (2009, May 12). Fungi Pathogenic To Insects Are New Tool In Fight Against Chagas Disease. ScienceDaily. Retrieved August 22, 2014 from www.sciencedaily.com/releases/2009/05/090511210409.htm
Public Library of Science. "Fungi Pathogenic To Insects Are New Tool In Fight Against Chagas Disease." ScienceDaily. www.sciencedaily.com/releases/2009/05/090511210409.htm (accessed August 22, 2014).

Share This




More Plants & Animals News

Friday, August 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Farm Resurgence Grows With Younger Crowd

Farm Resurgence Grows With Younger Crowd

AP (Aug. 22, 2014) — New England farms are seeing a surge in younger farm hands as the 'buy local' food movement grows across the country. (Aug. 22) Video provided by AP
Powered by NewsLook.com
Drug Used To Treat 'Ebola's Cousin' Shows Promise

Drug Used To Treat 'Ebola's Cousin' Shows Promise

Newsy (Aug. 21, 2014) — An experimental drug used to treat Marburg virus in rhesus monkeys could give new insight into a similar treatment for Ebola. Video provided by Newsy
Powered by NewsLook.com
Terrifying City-Dwelling Spiders Are Bigger And More Fertile

Terrifying City-Dwelling Spiders Are Bigger And More Fertile

Newsy (Aug. 21, 2014) — According to a new study, spiders that live in cities are bigger, fatter and multiply faster. Video provided by Newsy
Powered by NewsLook.com
Did Russia Really Find Plankton On The ISS? NASA Not So Sure

Did Russia Really Find Plankton On The ISS? NASA Not So Sure

Newsy (Aug. 21, 2014) — Russian cosmonauts say they've found evidence of sea plankton on the International Space Station's windows. NASA is a little more skeptical. 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:
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