Got Bed Bugs? Bedbugger Forums » Bed bug science, "experiments," etc.
ESA coverage.........
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spideyjg
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Posted 1 year ago
Mon Dec 13 2010 3:00:23
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Covering the ESA gathering here in SD.
Today was most of the afternoon of "10 minute papers". Just that a 10 minute presentation on a BB related study
2:05 0230 Mathematical model: A new tool for understanding
bed bug populations in U.S. Andrea M. Polanco-Pinzon, Virginia Tech, Blacksburg, VA, Dini Miller,
Virginia Tech, Blacksburg, VA and Carlyle Brewster, Virginia Tech,
Blacksburg, VA.Andrea presented a case of how some modern things, central heating for one, have changed the BB environment in a home from what was around in the 50's to alter the growth of BBs.
She made the case how some truths of the past may have to be revised. They did a study to compare their mathematical model for population growth with growth of a pyrethrin resistant and susceptible strain.
The non resistant strain laid more eggs but the resistant strain develops faster.
2:17 0231 Cimex lectularius L. (Heteroptera: Cimicidae) control
using the entomopathogenic fungus Metarhizium anisopliae. Gale
E. Ridge, Connecticut Agricultural Experiment
Station, New Haven, CT and Anuja Bharadwaj, Connecticut Agricultural
Experiment Station, New Haven, CTThis fungus 2 different strains, is already used to control ticks and in a dip test 100% mortality was achieved in 4-6 days. However in a more realistic surface treatment/residual exposure simulation it took 4 weeks.
Dr. Bridge had breaking news that She has an unidentified species of Cimex. She has a photo and dead samples but is going to put out feelers to gather live ones.
The differences are subtle and the photo she had was probably 30X magnification. It has longer hair than a lectularius, the wing pads are different, the clypeus was more pointed, and the mesonotum-scutellum was smaller than a lectularius so the thorax was smaller. I'll double check and get the photos from her. She is going to want more samples.
2:29 0232 Combining heat and dichlorvos to control bed
bugs, Cimex lectularius. Margie Pfiester Lehnert, Univ. of Florida,
Gainesville, FL, Roberto M. Pereira, Univ. of
Florida, Gainesville, FL, Phil Koehler, Univ. of Florida, Gainesville,
FL, Wayne Walker, Univ. of Florida, Gainesville, FL and Matthew
Lehnert, Univ. of Florida, Gainesville, FLThis was controversial so not going into detail but in the test DDVP did kill eggs.
2:41 0233 Evaluations of pyrethroid susceptibility and the effects
of insect growth regulators against the common bed bug, Cimex lectularius, in the laboratory. Sumiko R. De La Vega, Sierra Research Laboratories, Modesto, CA and William A.
Donahue, Jr., Sierra Research Laboratories, Modesto, CABottom line of this was IGRs were not very good. 5 IGRs were tested and none had impressive results.
2:53 0234 Bio-efficacy of commercial insecticides against bed bug
(Cimex lectularius). Hiroshi Okamoto, Sumitomo Chemical Co., Ltd, Takarazuka, Hyogo, Japan,
Satoshi Sembo, Sumitomo Chemical Co.,Ltd, Osaka, Osaka, Japan
and Takao Ishiwatari, Sumitomo Chemical Co., Ltd, Takarazuka,
Hyogo, JapanMuch of this covered products I wasn't familiar with and could scrawl down fast enough. Japan has seen a similar escalation of BBs as everywhere else. about 10 calls in '95 to 150+ in '09.
3:05 0235 Effect of ATP on engorging responses of the bed bug,
Cimex lectularius L. Alvaro Romero,
North Carolina State Univ., Raleigh, NC and Coby Schal, North
Carolina State Univ., Raleigh, NCThis was more academic but ATP, Adenosine triphosphate, seems to be a key factor in BB feeding responses. Mixing just enough of this into warm water BBs would take a full feeding off it. This could be for "seasoning" stored blood to reduce the need for human feedings.
3:17 0236 Cuticular analysis of field collected bed bugs (Cimex
lectularius L.) that are known to be pyrethroid resistant. Reina Koganemaru,
Virginia Tech, Blacksburg, VA, Dini M. Miller, Virginia Tech, Blacksburg, VA, Zach N. Adelman,
Virginia Tech, Blacksburg, VA and Jeffrey R. Bloomquist, Univ. of
Florida, Gainesville, FLThe cuticle of the exoskeleton of some pyrethroid resistant BBs is thicker, especially on the ventral, underside, of them as compared to a non resistant strain. Unknown if the thicker cuticle "is" the mechanism of resistance.
3:41 0237 Resolving the roles of symbionts in the bed bug. Mark
H. Goodman, Univ. of Kentucky, Lexington,
KY, Michael F. Potter, Univ. of Kentucky, Lexington, KY and
Kenneth F. Haynes, Univ. of Kentucky, Lexington, KYExperiments to eliminate a symbiont bacteria, Wolbachia, using antibiotics resulted in reduced egg laying and the viability of eggs. Very early stage science that furthers BB biological knowledge but to get to treatment has mega hurdles but is a novel line of inquiry.
3:53 0238 Time to aggregation in the common bed bug (Cimex
lectularius L.). Matthew Douglas Reis, Virginia
Tech, Blacksburg, VATesting fed vs unfed bugs in their tendency to wander from the harborage or stay put. 70% of bugs that got to feed went back to harborage, whereas bugs that got psyched and couldn't feed 80% kept searching. about 2 hours before dawn they all started to go back.
Jim
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nycyn
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Posted 1 year ago
Mon Dec 13 2010 3:14:37
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Thank you very much. I appreciate your effort. Especially interesting about the IGR's.
I'd be interested to see a thread on each topic.
Cheers!
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No way, Jim! Thanks so much for this.
Some news story recently ran Dr. Ridge's comment about this (and frustratingly the journalist could not think to follow up!) -- I am so glad you are going to share!
Best wishes,
Renee -
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Posted 1 year ago
Mon Dec 13 2010 3:25:47
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That's great, Jim!
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spideyjg
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Posted 1 year ago
Mon Dec 13 2010 3:42:21
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The big question is if it is new or one subspecies that was never documented.
All Dr Ridge has are dead samples and she will be getting Lou and others photos to keep an eye out so live ones can be obtained.
I've looked at lots of bugs and the differences are small. The eyes are slightly bigger as well.
Jim
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Sleepless in NYC
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Posted 1 year ago
Mon Dec 13 2010 3:49:47
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Thanks for sharing the info with us Jim. It is most appreciated.
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Killshot
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Posted 1 year ago
Mon Dec 13 2010 5:09:18
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Hey Jim,
Thanks for taking the time to share your updated information.
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bait
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Posted 1 year ago
Mon Dec 13 2010 10:37:28
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"Dr. Bridge* had breaking news that She has an unidentified species of Cimex. She has a photo and dead samples but is going to put out feelers to gather live ones."
*Gale RidgeNot surprising at all. We may be on the cusp of BB enlightenment. Please tell us the size and age of the dead ones.
Bait
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spideyjg
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Posted 1 year ago
Mon Dec 13 2010 12:37:28
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From your other post is sounded like you are here at the conference bait. If so tomorrow is the main BB day and I'm sure Dr. Ridge will show the samples. She has one adult in some clear resin to show and some in a vial.
Size and color they look like lectularius. As always the devil is in the details and these are small differences.
Jim
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nycyn
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Posted 1 year ago
Mon Dec 13 2010 19:42:52
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I'm going to do a spin-off on "unidentified species."
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spideyjg
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Posted 1 year ago
Mon Dec 13 2010 23:12:43
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Had a long conversation with Andrea M. Polanco-Pinzon about her upcoming paper on starvation.
Not to give away the details but it wasn't to overturn the times of Omori but to see if Pyrethoid resistance cost the bugs a shortened lifespan testing under under starvation conditions. It does seem so.
The studies of yore by Omori and Johnson '41 and '42 don't have enough detail to ensure 100% replication.
Had a long talk with Allison Taisley who is the Project coordinator with Cornell's NortheastIPM Center. She has a blog on various IPM matters above and beyond BBs
Check it out.
Also had to check out the gadgets and found a wicked USB microscope.
Jim
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nycyn
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Posted 1 year ago
Mon Dec 13 2010 23:30:27
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Is the CYNLECTO bb dowsing rod getting attention? Oh. Sorry. That's tomorrow.
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MsJ
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Posted 1 year ago
Tue Dec 14 2010 13:19:32
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Would love to know what they use/recommend. Sadly, I've now contributed to the BB problem here in Japan.
spideyjg - 1 day ago »
Covering the ESA gathering here in SD.
Today was most of the afternoon of "10 minute papers". Just that a 10 minute presentation on a BB related studyBio-efficacy of commercial insecticides against bed bug
(Cimex lectularius). Hiroshi Okamoto, Sumitomo Chemical Co., Ltd, Takarazuka, Hyogo, Japan,
Satoshi Sembo, Sumitomo Chemical Co.,Ltd, Osaka, Osaka, Japan
and Takao Ishiwatari, Sumitomo Chemical Co., Ltd, Takarazuka,
Hyogo, Japan
Much of this covered products I wasn't familiar with and could scrawl down fast enough. Japan has seen a similar escalation of BBs as everywhere else. about 10 calls in '95 to 150+ in '09.Jim
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cilecto
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Posted 1 year ago
Tue Dec 14 2010 17:16:29
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nycyn - 17 hours ago »
Is the CYNLECTO bb dowsing rod getting attention? Oh. Sorry. That's tomorrow.We're across the border, with the cedar, pumpkin pie oil and DE kit sellers, at the Salon des Refuses.
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spideyjg
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Posted 1 year ago
Wed Dec 15 2010 2:18:23
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Loads of stuff today. Can't even begin to summarize it all right now
Michael Potter gave a historical perspective and said we are in the bottom of the first inning in the battle.
Harold Harlan, who has been keeping BBs for 37 years had some interesting tidbits such as males go sterile after 12 days without food, 20% defecate during feeding,
Stephen Kells covered how they created a kit ~$15 of stuff to help social workers avoid transference and not alarm their clients.
Susan Jones covered the Central Ohio BB task force formation and experience with the difference with Cincinnati and Columbus health agencies attitude.
Lou covered the New York BB advisory board history and the aspects of New York that make BBs a hot spot there.
Mark Sheperdigian hammered again on the key of education of the suffering public to make them part of the solution.
Changlu Wang covered more social services issues in NJ with low income housing.
Dini Miller Gave example of the devastating costs BBs inflict on owners of apartments. A complex that profited around 250K a year for 16 years went to no profit, to in the red, loss of 100K reserve, and now are on the verge of economic collapse.
Janis Reed could not be there and I forgot the gentlmans name who covered her material but som key points for the PCO were Thorough treatment is imperative! If you cannot be thorough, don't treat at all! The primary reason for treatment failure is clutter. If no client cooperation don't offer a warranty or don't even take the job.
Kenneth Haynes covered scary pesticide resistance data. 1959 pyrethrin resistance first appeared and 87% of random populations from around the US have Deltamethrin resistance. I asked Dr. Potter if it was time to just toss pyrethrins for BBs out the window. The data overall isn't in because there is still some success out there but how much is IPM and how much is the product is unknown.
Robert Hickman covered the evolution of Phantom from a termite treatment to it's current status as the preferred choice of up to 42% of PCOs
Thomas Jarzynka discussed their unique approach to thermal for hotel rooms.
Jill Gordon went through some bad infestation sites and some unique ones. Once case BBs were even in the door hinges.
Lots to digest and tomorrow afternoon is all about IPM.
Out.
Jim
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Killshot
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Posted 1 year ago
Wed Dec 15 2010 2:32:22
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Hey Jim,
Once again, thanks for sharing!
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Zilver
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Posted 1 year ago
Wed Dec 15 2010 16:11:09
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Thanx ! Nice job sharing all this , interesting stuff !
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oldtimer
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Posted 1 year ago
Wed Dec 15 2010 17:00:22
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Really interesting... thanks Jim!
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cilecto
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Posted 1 year ago
Wed Dec 15 2010 18:57:24
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What's the gist of Tom J's approach?
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spideyjg
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Posted 1 year ago
Wed Dec 15 2010 23:13:22
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They have a custom forced air heater that raises the temp slowly and can run off the available power in the hotel room circuits. Usually there are 3 15 amp and the AC as well.
They have about 2000+ cfm of air circulation forcing the heat around the room
http://www.masseyservices.com/commercial/bed-bug-program/
These are their claims and if you recall a thermal job monitored by Michael Potter in a trade journal, that was a job these guys were doing.
He had photos using Flir thermal cameras that are part of their temp monitoring process.
Jim
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rs1971
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Posted 1 year ago
Thu Dec 16 2010 2:04:59
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Just want to take a half a minute to echo everyone else and thank you for taking the time to write these up.
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spideyjg
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Posted 1 year ago
Thu Dec 16 2010 2:37:52
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rs1971 - 12 minutes ago »
Just want to take a half a minute to echo everyone else and thank you for taking the time to write these up.It was my honor to go on behalf of bedbugger to cover the event. What you don't get in interviews of TV or radio is the passion these scientists have for trying to find solutions.
They get it as far as what victims go through. They spend time in the field, in peoples homes. Sumiko De La Vega told of a gathering of a resistant strain from a guy with a nasty infestation who didn't react. Right when they got to his house he had been sleeping, he let the team in and she pulled the bugs off the guy in the day.
Stephen Kells of the University of Minnesota choked up and could barely keep his emotions in check when talking about children in low income housing suffering from BBs.
These folks, Lou Sorkin, Michael Potter, Dini Miller, Harold Harlan, Gale Ridge, Susan Jones, Changlu Wang, and Stephen Kells, are the heavyweights in the BB world. To be in the rooms with all these folks and listening to them, asking questions was quite enlightening.
Of particular interest is the work Changlu, Dini, Stephen, Susan, and Allison Taisey are doing focusing on low income housing which due to various factors can act as BB sinks/ reservoirs. They are working to get headway into these reservoirs and solve the problems.
As Dr Potter says we are at the bottom of the first inning in this but I came away very confident in the team.
Jim
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nycyn
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Posted 1 year ago
Thu Dec 16 2010 3:08:28
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While we await all the news, I have been panting over this one: What hotel/motel are y'all staying at and what did you guys do to it?
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