Home' Trinidad and Tobago Guardian : April 14th 2017 Contents bedbugs can survive exposure to the two
insecticides, Gondhalekar's team sug-
Integrated pest management practices
will slow further development of bedbug
resistance to the chemicals, the research-
"With these findings in mind and from
an insecticide-resistance management
perspective, both bifenthrin and chlor-
fenapyr should be integrated with other
methods used for bedbug elimination in
order to preserve their [effectiveness] in the
long term," Gondhalekar recommended.
The other control measures include vac-
uuming, steam or heat treatments, mat-
tress encasements, traps, and a profes-
sional insecticide called desiccant dusts.
With a multipronged approach, "effec-
tive bedbug control can be accomplished,
and theoretically this should reduce the
risk of resistance build-up in populations,"
The study results were published April
10 in the Journal of Economic Entomology.
(Entomological Society of America)
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guardian.co.tt Friday, April 14, 2017
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Bedbugs building resistance to more insecticides
The bedbugs are winning.
Some bedbugs are showing early signs of re-
sistance to two widely used insecticides, Purdue
University researchers report.
As a result, the researchers urge pest management
companies to use a "well-rounded" set of control
measures when dealing with the parasitic insects.
"In the past, bedbugs have repeatedly shown
the ability to develop resistance to products overly
relied upon for their control," said study author
Ameya Gondhalekar, a research assistant professor
at Purdue's Center for Urban and Industrial Pest
"The findings also show similar trends in regard
to chlorfenapyr and bifenthrin resistance devel-
opment in bedbugs," Gondhalekar said in a news
release from the Entomological Society of America.
Previously, common bedbugs were found to have
significant resistance to deltamethrin and some
other pyrethroid-class insecticides. That has led
to their re-emergence as an urban pest, the study
For this study, the researchers tested 10 popu-
lations of bedbugs gathered from locations in In-
diana, New Jersey, Ohio, Tennessee, Virginia and
Washington, DC. The investigators found that more
than 25 per cent of the pests were still alive seven
days after exposure to the insecticides chlorfenapyr
That rate of survival indicates resistance to the
insecticides, the study authors said.
Further research is needed to learn why certain
How common fats,
a lazy lifestyle and
diabetes are connected
A UBC researcher is suggesting the types of cooking
oils people consume may be sabotaging their efforts to
stay healthy and avoid illnesses such as diabetes.
Sanjoy Ghosh, a Michael Smith Health Research Foun-
dation Scholar and a professor at UBC's Okanagan campus,
has recently published research that concludes a high
consumption of polyunsaturated fatty acids (PUFA) but
not monounsaturated fatty acids (MUFA) can lead to
sedentary, in fact, lazy behaviour especially in women .
Ghosh says not that long ago, heart disease was linked
to saturated fats---an idea that has become increasingly
controversial in recent years. This thinking instigated the
intentional removal of saturated fatty acids from most
food supplies in favour of MUFA and PUFA. Essentially
all fats in our 'convenience' foods like potato chips, en-
ergy bars, crackers or burgers use cooking oils like corn,
sunflower and soybean and margarine---all rich in MUFAs
For his research, Ghosh collaborated with UBC biol-
ogist and data analyst Jason Pither, the first-author of
the study, to examine data from 21 countries in Europe.
They worked specifically with data relating to pre-teen
girls and then, in a second study, the blood glucose levels
of adult women. In putting details such as the amount
of time each week spent watching TV along with other
filters like a country's per capital GDP, urbanisation, and
even latitude, they came out with a clear connection to
the consumption of n-6 polyunsaturated fatty acids and
an increase in sedentary behaviour.
In particular, a significant correlation was observed in
sedentary behaviour of the 11-year-old girls and PUFA
in their diets.
"Our study does present new evidence that dietary
PUFA is strongly associated with sedentary behaviour
among pre-teen girls and weakly associated with diabetes
among adult women across Europe," says Ghosh, recom-
mending for more trials and studies to confirm his findings.
"This data is extremely significant," says Ghosh. "No-
body has made this connection and it's time for an inter-
vention. And if someone is beginning an exercise program
without taking a close look at the fats, especially PUFA
they are consuming, or changing what they're eating, then
it might be doomed to failure."
University of British Columbia Okanagan campus
Bed bugs are developing resistance to some
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