PCOC - Fall 2013 - (Page 14)
PCOC Expo 2013
Bed Bug Presentation:
Control and Management Updates
By Gail M. Getty,
Getty Entomological Research & Consulting and Domus Institute
The PCOC Pest Expo 2013 provided a wonderful opportunity to engage in great company and
camaraderie in a beautiful venue. I want to thank PCOC and its members for the invitation to speak and
the many sponsors and exhibitors that continually support the industry and with whose support we could
not offer many of the programs that exist.
I opened this presentation with my
now well-known plea of raising our PCOC
membership numbers and inviting everyone to recruit just one new member, be
it through recognition of good service, a
birthday, or for a new employee in your
company or industry.
Our first discussion was on bed bug
egg emergence. The role of various environmental conditions on egg emergence
by bed bugs has been well documented
since 1930 (Hase 1030, Omori 1941).
New research results were presented
in an article by Dr. Vernard R. Lewis,
UC Berkeley (“Variable Temperature
Conditions,” NPMA PestWorld January/
February 2013). The important point made
by Dr. Lewis and his team was that posttreatment evaluation of the efficacy of a
treatment could be based on a day-degree
model reflecting variable temperatures in
a structure. The authors reported the mean
days to hatch for their variable temperatures was two-fold greater days than those
eggs reared at a constant temperature.
What does that mean in a bed bug management program? If eggs are emerging
as late as 20 days, a 10-14 day inspection
post-treatment may not reveal viable egg
presence at that time.
Misidentification by the Public
The public sends digital photos of suspected bed bugs by the hundreds, if not
thousands, every year. As an entomologist at UC Berkeley, I received many of
these and continue to now as a consultant.
Although I have not counted the number
of bed bug photos to non-bed bug photos,
it is clear that most of the photos are of
something other than bed bugs. The carpet beetle reigns in my files as the second
most often provided photo. These photos
are often attached to long descriptions of
bites, blood, itching and stories of the horrific things these “bed bugs” did to them.
My favorite is if they inform me the bed
bug was flying. But, clearly the photo I
receive the most is of “boogers,” dried
blood flakes or chunks of skin. The point
of all this is to remember if a professional
has not identified the problem, there is
quite a bit of room for speculation.
In a recent publication (“Bed Bug Bites:
Everything You Need to Know – But Were
Afraid to Ask,” Goddard, J, 2012, Emerging
Infectious Disease) it was reported that
many people who continue to experience
bed bug feeding on their body may also
have old lesions that re-flame upon new biting. Goddard states that this phenomenon
is poorly understood; however, he presumes
the re-flaming of previously fed upon areas
of the body are from antigens that reside at
the bite site for an extended period of time
and “re-flaming” happens because the person continues to be exposed to additional
feeding by bed bugs. This is of interest to
www.pcoc.org / Fall 2013
the PMP because clients may have an exaggerated view of the number of insects feeding on them based on their bite lesions.
In a recent conference, Dr. Stephen
Kells from the University of Minnesota,
made some compelling points on bed bug
semiochemicals and managing a bed bug
infestation. Bed bugs produce alarm pheromones when they are disturbed causing
them to scatter. Researchers have found
that scattering bed bugs with a synthetic
version of their alarm pheromone may
force the insects to walk through desiccant dusts or other management products
which kill them (Benoit, J., D. Denlinger.
Ohio State University). But, there is additional impact of the alarm pheromone for
a PMP inspecting an infested room. A
bed bug inspection is usually a disruptive
task. Flipping mattresses and box springs
and overturning furniture and room items.
This can incite the bed bugs to release
their alarm pheromone causing bed bugs
Did You Know?
According to a Terminix study
released in July, Sacramento was ranked
the No. 1 city with the highest increase
in bed bug infestations (54 percent)
compared to the same time last year.
Riverside-San Bernardino was No. 6,
Los Angeles No. 11 and San Francisco
Table of Contents for the Digital Edition of PCOC - Fall 2013
PCOC Expo 2013: A Pictorial Highlight
Expo 2013 Bed Bug Presentation: Control and Management Updates
Overview of NEW California Aeration Plan (CAP)
Calbug Project: Public Needed to Uncover Clues in Natural History Collections
Your Guide to Social Media Startup
Insurance Small Employer Responsibilities under Health Care Reform Act
State Capitol Report Back to Business
Firm Profile Round the Clock Pest Control
Index to Advertisers
PCOC - Fall 2013