City of Dallas Prepares for WNV Season with Mosquito Traps

The City of Dallas is preparing once again for mosquito season.

The plan is very similar to last year’s plan, but there are some changes they hope will keep the number of cases of West Nile virus down.   Once again there will be 90 mosquito traps located throughout the city testing for West Nile virus.

They are hoping that this year’s cold winter will keep the number of West Nile deaths low and not spike like they did in 2012 when 21 people died. Read more

Mosquito Traps to fight Dengue Fever

As part of their efforts to control the spread of dengue in Singapore, the National Environment Agency (NEA) will be progressively placing traps in different residential areas to reduce the mosquito population.

The number of dengue cases had hit a historic high of 22,170 cases last year, with 3,420 cases detected so far this year.  Read more

New Findings May Help Control Disease-Carrying Mosquitoes

Mosquito sperm have a sense of smell — a surprising finding that could one day help control disease-carrying mosquitoes, researchers say.Mosquito Sperm

Mosquitoes use scent-detecting molecules known as odorant receptors in their antennae. These sensors help mosquitoes “sniff out” sources of blood as part of their sense of smell, technically known as olfaction.

Now, researchers have discovered mosquitoes have these same molecules in their sperm.  Scientists analyzed the mosquito species Anopheles gambiae, one of the most common carriers of malaria. They found odorant receptors on the whip like tails of the mosquitoes’ sperm. These molecules help to spur the beating of the tails, and thus help control the movement of the sperm, the researchers said.  read more

New Findings Could Lead to Better Mosquito Repellants and Traps

Every time a mosquito is lured to the scent of your skin, you’re at risk of contracting malaria, dengue fever, West Nile virus, or another deadly disease. A study published by Cell Press December 5th in the journal Cell has revealed an important class of neurons responsible for a mosquito’s attraction to human skin odor, as well as odors that stimulate and inhibit the activity of these neurons. The findings could lead to a new generation of repellants and traps for effective mosquito control worldwide.

“These findings open up very realistic possibilities of developing ways to use simple, natural, affordable, and pleasant odors to prevent mosquitoes from finding humans,” says senior study author Anandasankar Ray of the University of California Riverside.

(Photo Credit: Genevieve Tauxe)

(Photo Credit: Genevieve Tauxe)

“The powerful experimental approaches we have developed will help us find potential solutions that we could use not only here in the United States but also in Africa, Asia, and South America, where affordability is key in the war against these diseases.”   Read more

Mosquito Trapping To Continue in Phoenix

Mosquito activity is expected to decrease as temperatures fall. But the Maricopa County Environmental Services Department will continue to fog and set traps in Phoenix to prevent the spread of the mosquito-borne West Nile Virus.

And as the busy season for mosquitoes winds down, county spokesman Johnny Diloné said at least 500 mosquito traps will be set a week across the county.

Officials examine the traps for one of three conditions: if any of the trapped mosquitoes carry West Nile Virus, if it has more than 30 Culex mosquitoes (which are more likely to carry West Nile Virus), or if there are 300 or more mosquitoes in a trap.

Diloné said if the traps have one or more of these conditions, the county will fog the area. Exterminators fog between midnight and 5 a.m. — when most people are inside and won’t be fully exposed to the Permanone 30-30 and Zenivex E4 chemicals — around a square mile of where they collected the traps. One component of the traps is dry ice, which mimics human breathing and attracts mosquitoes. Read more

West Nile Virus Found in Rhode Island Mosquito Trap

A trap that was set on September 3 in Barrington, Rhode Island tested positive for West Nile virus. The positive result came from a pool of mosquitoes that were trapped near Barrington High School. The mosquitoes were of the Culex species, which feasts on both birds and mammals.

This is the fourth time this year that WNV has been found in Rhode Island. The Rhode Island Department of Health recently confirmed Eastern Equine Encephalitis in mosquitoes trapped near Tiverton and in Chapman Swamp. This brings the year’s total to four confirmed pools of WNV and three of EEE.  source

Solar Powered Mosquito Traps Help Battle Malaria

The Netherland’s Wageningen University is leading a project to install 4,000 solar powered mosquito traps on the Kenyan island of Rusinga.

The initiative started on April 25, World Malaria Day; marking the beginning of a four year endeavour to eradicate malaria from the island without the use of insecticides.

A “suna” (local word for mosquito”) trap, a locally produced solar panel, two light fixtures and a mobile phone charging point will be installed at each residence at a rate of fifty houses a week.  Read more

Mosquito Traps Doing Double Duty this Summer

A large section of the United States seems like it is getting eaten alive worse than usual this summer because of quirks in recent weather. It may be the worst in the Southeast, where after two years of drought when mosquito eggs laid dormant, there have been incredibly heavy rains much of the spring and summer. The rains have revived the dormant eggs, so the region is essentially getting three years’ worth of mosquitoes in one summer.

In parts of Connecticut this summer, mosquito traps had double the usual number of bugs. Minnesota traps in July had about triple the 10-year average. And in central California, traps had five times as many of one key species as the recent average.

Humans have been battling the blood-drinking bugs for thousands of years, and despite man’s huge advantages in technology and size, people are not getting the upper hand. Just lots of bites on the hand.  read more

New High Tech Wireless-Enabled Mosquito Trap

Touted as being “….the first-ever wireless-enabled mosquito trap” , the Mosquito Magnet® Commander cordless trap offers wireless-enabled capabilities, permitting owners to monitor their trap’s performance levels and maintenance needs from any wireless Smartphone or laptop.  read more

New Database Shows Mosquito Trapping and Testing for West Nile Virus in North Texas

Since last summer’s epidemic, the health departments in Collin, Dallas, Denton and Tarrant counties have significantly increased testing for the West Nile virus, trapping more mosquitoes than ever before.

NBC 5 Investigates built an in-depth, online database designed to show by zip code how frequently the four largest counties in North Texas conduct mosquito trapping and testing for West Nile virus. The database also provides the most recent date a zip code was tested and the number of mosquitoes in that zip code that could potentially carry the West Nile virus. Culex mosquitoes are the ones that can potentially carry the virus.  Southern House mosquitoes are the Culex species found most frequently in North Texas.

To get that information, NBC 5 Investigates spent weeks filing open records requests with the health departments in Collin, Dallas, Denton and Tarrant counties to obtain this year’s test results. Those results were compared with the data that each health department releases publicly online

Only Collin and Denton counties provide those numbers online and only Denton County breaks it down to zip code level.

The county health departments said they will provide more details to anyone who files a request for information like NBC 5 Investigates did.  But on their websites, they’re trying to strike a balance between too little information and too much.

“Whether we strike that right balance or not, I don’t know.  We try to find that balance — we listen to the calls coming in from the people.”  source