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. Egg Emergence 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. Bite Lesions 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 14 the PMP because clients may have an exaggerated view of the number of insects feeding on them based on their bite lesions. Semiochemicals 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 No. 12. http://www.pcoc.org

Table of Contents for the Digital Edition of PCOC - Fall 2013

President’s Message
Martyn’s Corner
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
Federal Update
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
Advertiser.com

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