Get in Touch



Do Bed Bugs Grow Faster In Bigger Communities?
To paraphrase Hillary Clinton, new research shows “it takes a village” to raise a bed bug.
A recent study looked into the question of whether Cimex lectularius nymphs reared in groups develop faster than their solitary counterparts: Do bed bugs mature more quickly when they’re part of a community, or when they strike out on their own? The researchers also examined the effects of group housing (aggregation) on same-age nymphs without any adults around, compared to nymphs reared with adults.
In another, unrelated study, the topic was seasonality. Researchers were hoping that knowing more about the seasonality of bed bugs might help improve current practices used to control and eradicate the bountiful pests.
In the first study, a team from North Carolina State University found bed bug nymphs — similar to other gregarious insects such as crickets, cockroaches and grasshoppers — mature faster in aggregations than solitary nymphs. Their rate of growth was faster by 2.2 days, or 7.3 percent, a significant difference. Aggregated nymphs in the study experienced a lower mortality rate (6 percent) than solitary nymphs (18 percent), but such a difference isn’t deemed considerable.
Researchers didn’t observe any significant difference in development time between males and females in the two groups.
The bed bugs used in the study originated in an infested apartment in Jersey City, N.J., and had been in culture for three years in a laboratory. Researchers selected only recently hatched first instars. Blood was offered three times every week to ensure sufficient access to a bloodmeal. The development time for each gender was measured when nymphs reached adult stage.
Live free or die
 “Group Living Accelerates Bed Bug (Hemiptera: Cimicidae) Development,” published in the January 2014 issue of the Journal of Medical Entomology, also suggests the growth-related effects of socialization are the same regardless of the ages of the individuals in the group.
Bed bugs live in groups consisting of eggs, nymphs and adults of various ages. The research concluded nymphs don’t need adults around to grow at optimal rates. The nymphs raised in a group of 50 similarly aged bed bugs matured no faster or slower than 50 nymphs raised with 10 adult males, which were used to avoid the problems that eggs (and, therefore, more nymphs) would’ve created. Again, researchers observed no significant difference in development time between males and females.
The failure of the presence of adult males to affect development of the grouped nymphs suggests the effects of grouping are the same, regardless of the age of individuals in the group. Additionally, newly hatched bed bugs don’t need interaction with mature bed bugs for rapid growth, implying development might be independent of horizontally transmitted symbiotic microbes.
Mortality was 20 percent in the group with the adult males versus 12 percent for those grouped exclusively with others their own age. But this, too, is scientifically insignificant. In both groups, the majority of the mortality occurred within the first two weeks, during early-instar development.
The benefits of group living, according to the report, might include “a more favorable microenvironment (e.g., higher humidity and group thermoregulation), access to symbiotic microbes, lower risk of predation and more encounters with mates (Krause and Ruxton 2002). Bed bug communities might have evolved for protection from natural enemies, for improved mating, horizontal transfer of symbionts, nutrients or both, and protection from unfavorable environmental conditions such as low humidity (Benoit et al. 2007, Pinto et al. 2007).
The shortage of predators indoors and the advantage to predators (spiders, for example) of aggregated prey largely deflate the argument favoring predator avoidance as the reason for faster maturation in aggregation. Improved mate-finding is a more likely hypothesis, because bed bugs are wingless and not known to use long-range sexual communication. Aggregation also might be important for providing a moist microclimate because bed bugs are threatened by desiccation at every life stage.
Enhanced rates of development, especially in pest species, might be a response to population challenges and frequent colonization in a highly fragmented environment. The faster development afforded by aggregation might be strongly adaptive for a colonizer species dependent on sexual reproduction: Nymphs need to reach reproductive adult stage quickly.
“When a solitary male or female nymph is the sole colonizer, it would be maladaptive to rapidly reach the adult stage without the prospect of successful reproduction,” say the study’s authors.
The team recognizes more aspects need to be investigated, including how grouping affects particular stages of development; how grouping affects reproduction and mortality of adult bed bugs; the sensory cues that stimulate development in aggregation and their coupling to neuroendocrine mechanisms that accelerate development, and other fitness advantages conferred in aggregations. The study concluded group living can produce a so-called group effect, resulting in morphological, behavioral and physiological changes that can benefit individuals within the aggregation.
This is the first study of the effects of aggregation on bed bug development.
The Philadelphia story
In the second study, University of Pennsylvania researchers are looking for cheaper and more effective ways to eradicate bed bugs. Some findings, published in the Journal of Medical Entomology, examined the matter of seasonality. Scientists focused on four years (2008-2012) of bed bug reports in Philadelphia, mapping the location of each infestation.
From 2008 to 2011, the number of reported cases increased an average of 4.5 percent monthly, which translates to almost 70 percent annually.
Infestations were most frequent in August and least frequent in February. Knowing when infestations are most likely to occur should help improve the efficacy of eradication techniques.

As you can see this study points to the fact that the larger a Bed Bug infestation is the faster the nymphs, or young, develop. This makes it so essential to completely destroy a bed bug community and sever their life cycle. A1 Pest Control has been treating bed bugs for many years and owner, Bruce Gow, has more than 3 decades of experience in treating them! Ring us on 0417 251 911 and we can organize a quote or appointment ASAP!

"We first used A1 Pest Control a few years ago when we noticed a few termites under a wine barrell in the rear yard of our home. We asked A1 Pest Control Sydney to pay us a visit to have a thorough termite inspection of our home. Bruce and his crew were on time, and very well presented. They explained how they would get rid of the termite infestation using a low toxic method and how their Thermal cameras worked, It worked very well and now we can sleep at night!"
Gary and Carol Harman
"We have been using Bruce form A1 Pest Control for over 4 years now. We bought our new house on the Hills Area, and moved in. our neighbours had problem with rodents and spiders so they are using A1 next door. I asked them if they could come over and treat our house too, as i didn't want to chase pest around our home. The service was not only effective, but carried out without any smelly fumes that we have experienced in our last house. They solved problem next door and I haven't seen a bug since."
Melissa Topper
"A1 Pest Control exterminators where great! I'm very happy to say that they solved a bed bug problem that I had after we had visitors from overseas visit us. I would recommend A1 Pest Control to anyone needing a safe and effective treatment of bed bugs"
Amanda Wu
"Bruce solved our commercial pest control problem in Castle Hill. Cockroaches were throughout our factory and they were completely gone after two visits from his exterminators. Just seeing one cockroach can lose us clients. I know now everyhing is ok, and our reputation is intact"
Raj Beri, Europa International
"Bruce from A1 Help us get rid of a bad spider infestation that have been troubling us for a while. It was done with low toxic spray and his crew even game me some cockroach and ant baits to get rid of them. I have recommended A1 to all my friends and family"
Carmel Thomas
Get in Touch
Get A Quote
Please complete the form below and we'll respond ASAP