Skip to content
Catholic Online Logo

By Catholic Online (NEWS CONSORTIUM)

9/20/2012 (2 years ago)

Catholic Online (www.catholic.org)

Study finds wily insects changing their feeding habits to work around preventative nets

Insects are a highly adaptive form of organism, displaying at times an almost human-like intelligence. This is especially true if there is a chain in their food chain. Two African villages using mosquito nets began to notice a marked difference in the mosquitoes' biting habits in order to avoid the barriers.

Insecticide-treated bed nets are a vital weapon in the global fight against malaria. The disease is borne by parasite-carrying mosquitoes and kills more than 650,000 people a year, according to the World Health Organization.

Insecticide-treated bed nets are a vital weapon in the global fight against malaria. The disease is borne by parasite-carrying mosquitoes and kills more than 650,000 people a year, according to the World Health Organization.

Highlights

By Catholic Online (NEWS CONSORTIUM)

Catholic Online (www.catholic.org)

9/20/2012 (2 years ago)

Published in Health

Keywords: Mosquitos, malaria, patterns, malaria nets, study


LOS ANGELES, CA (Catholic Online) - In a French study, mosquito behavior before and after was gauged in all households in two villages in Benin were given insecticide-treated nets.

The report, appearing in the Journal of Infectious Diseases, French researchers found that mosquitoes seemed to change their hours of "peak aggression" from 2 a.m. or 3 a.m. to around 5 a.m., three years after nets were put up.

In one village, the proportion of mosquito bites inflicted outdoors rose.
 
Insecticide-treated bed nets are a vital weapon in the global fight against malaria. The disease is borne by parasite-carrying mosquitoes and kills more than 650,000 people a year, according to the World Health Organization.

Outdoor bites accounted for 45 percent of all bites at the outset, but rose to 68 percent one year later and 61 percent after three years.

This trend is "worrying since villagers usually wake up before dawn to work in crops, and as such they are not protected by mosquito nets," senior researcher Vincent Corbel, of the Montpellier said in an email.

Scientist stress that the report is limited in scope. The results, after all come from just two villages in one country. "We cannot extrapolate to a wider geographical area and/or a different entomological context," Corbel warned.

A malaria researcher not involved in the study said the results of the study should be interpreted with caution due to the difficulty in getting reliable measures of mosquito "biting behavior" over time.

In Corbel's study, the team used the standard way of gauging mosquito activity, the "human landing catch" meaning that a mosquito collector lets the pest land on his skin and then catches it.

Mosquito nets have been credited with spurring big drops in malaria deaths. For every 1,000 children protected by an insecticide-treated net, five to six lives would be saved every year, according to a report for the Cochrane Collaboration.

Malaria cases have started to climb again in certain African countries in recent years, Corbel said. Experts have mainly been concerned about mosquitoes' growing resistance to the insecticides used in bed nets and for indoor spraying.

"Long-lasting insecticidal nets were developed to protect people at night when they are sleeping," Corbel says, noting that if mosquitoes shift to early morning and outdoor biting, the nets might not be enough to keep malaria under control.

.

---


Pope Francis: end world hunger through 'Prayer and Action'


2014 - Distributed by THE NEWS CONSORTIUM

Pope Francis Prayer Intentions for November 2014
Lonely people:
That all who suffer loneliness may experience the closeness of God and the support of others.
Mentors of seminarians and religious: That young seminarians and religious may have wise and well-formed mentors.



Comments


More Health

Brain weak spot that causes Alzheimer's begins in late adolescence Watch

Image of The study involved MRI brain scans on 484 healthy volunteers, aged between eight and 85 years, conducted by the Medical Research Council

By Catholic Online (NEWS CONSORTIUM)

According to scientists in the United Kingdom, the human brain has a weak spot for Alzheimer's disease and schizophrenia. Researchers pinpointed the region using scans. They say that the weak spot develops late in adolescence and degenerates early during aging. ... continue reading


Women beware! This fibroid removal process could just cost you your life! Watch

Image of Women who are seeking to have fibroids removed should have them tested for cancer first.

By Catholic Online (NEWS CONSORTIUM)

The U.S. Food and Drug Administration is warning women and physicians about a gynecologic device that has given women cancer. LOS ANGELES, CA (Catholic Online) - The FDA said that women who thought they had harmless fibroids found that their cancer was actually worse ... continue reading


GROSS! This was in his brain for four years! Watch

Image of A type of parasitic tapeworm, just a little over 0.3 inches in length, burrowed its way through the brain of a British man for four years.

By Catholic Online (NEWS CONSORTIUM)

In what has to be one of the most bizarre cases in recent medical history, a series of brain scans have been made which charts the path of a tiny parasitic tapeworm as it burrows its way through the brain of a British man. LOS ANGELES, CA (Catholic Online) - This ... continue reading


Obesity: It isn't just deadly, but each year it costs the globe TWO TRILLION! Watch

Image of Obesity is the third largest economic burden on the world, just $.1 trillion behind the costs of smoking and war and terrorism.

By Catholic Online (NEWS CONSORTIUM)

It should come as no surprise to anyone that terrorism and war hurt the global economy. What is incredible is that just behind them in terms of actual cost is smoking, and obesity. LOS ANGELES, CA (Catholic Online) - A new report from the economic consulting firm ... continue reading


Creation of John Paul II Medical Research Institute

By Alan B. Moy, MD

The Catholic Church has a long-standing history in health care, education and medical research. The Church was the first during the Middle Ages to create the university system and medical centers. Some of the early scientists were clergymen like Gregor Mendel, who was ... continue reading


Welcome to the horrifying future where women are used and abortion rampant Watch

Image of In the future, according to one dire prediction, babies will come from test tubes and sex will be purely for recreation.

By Catholic Online (NEWS CONSORTIUM)

The professor and chemist who invented the birth control pill has now claimed that advances in IVF will render the pill obsolete allowing people to plan pregnancies and engage in sex for recreational purposes only. LOS ANGELES, CA (Catholic Online) - Prof. Carl ... continue reading


Eat healthy, exercise and take statins - and live to be 120 years old Watch

Image of A

By Catholic Online (NEWS CONSORTIUM)

While immortality still remains out of reach by scientific standards, some scientists now say they have worked out how we could make it to 120. Exercising more, eating healthy and taking statins they claim are key to slowing the aging process. LOS ANGELES, CA ... continue reading


Dignity Health loses moral compass, settles overcharge scandal for $37 million Watch

Image of Catholic facilities, built and supported by Catholics, should remain Catholic.

By Catholic Online (NEWS CONSORTIUM)

The San Francisco-based Dignity Health hospital chain has agreed to pay a $37 million settlement to clear up allegations that they overcharged patients between 2006 and 2010. LOS ANGELES, CA (Catholic Online) - Dignity Health, a chain of 13 hospitals that was built by ... continue reading


'Elite controllers' claim that they can spontaneously 'cure' HIV Watch

Image of AIDS/HIV remains a scourge throughout the African continent and homosexual men in urban areas.

By Catholic Online (NEWS CONSORTIUM)

It's another claim made by researchers about a disease that continues to devastate the world. Scientists say they have uncovered the genetic mechanism which appeared to have led two HIV-infected men to experience a "spontaneous cure - and that the discovery ... continue reading


Sierra Leone sees Ebola cases 'spreading quickly' Watch

Image of There have been 2,413 Ebola deaths in Liberia, 1,510 in Sierra Leone, 1,018 in Guinea and eight in Nigeria.

By Catholic Online (NEWS CONSORTIUM)

While in other parts of West Africa, new Ebola cases appear to be tapering off, new cases continue to rise "frighteningly quickly" in areas of Sierra Leone. The international campaign group the Africa Governance Initiative, or AGI found that in rural parts of ... continue reading


All Health News

Newsletters

Newsletter Sign Up icon

Stay up to date with the latest news, information, and special offers

Daily Readings

Reading 1, Revelation 15:1-4
1 And I saw in heaven another sign, great and ... Read More

Psalm, Psalms 98:1, 2-3, 7-8, 9
1 [Psalm] Sing a new song to Yahweh, for he has ... Read More

Gospel, Luke 21:12-19
12 'But before all this happens, you will be seized ... Read More

Saint of the Day

Saint of the Day for November 26th, 2014 Image

St. John Berchmans
November 26: Eldest son of a shoemaker, John was born at Diest, Brabant. He ... Read More

Inform, Inspire & Ignite Logo

Find Catholic Online on Facebook and get updates right in your live feed.

Become a fan of Catholic Online on Facebook


Follow Catholic Online on Twitter and get News and Product updates.

Follow us on Twitter