Experiment Update

As introduced I have bottled a number of bed bugs at various age stages in order to examine feeding behaviors and longevity without feeding.

It is purported that bed bugs can live for 365 days (or more) relatively quietly while waiting for their next meal to arrive. Actually many bugs reliant on blood feeding have this same trait. I have seen documentaries about tics in the desert that bury themselves into the sand until a passing buffet disturbs the ground and they wake up and jump on for a feed.

Well, I bottled my samples five months ago and most of the samples are still going strong. There have been a few deaths, a few babies but mostly adults. I cannot say for certain how old the adults I captured were already, but this is what I have noticed.

-Most of the adults have died.
-The babies who have never fed before who were born a few months ago are still alive.
-The babies who have fed and have shed their skin and morphed to the next stage are still alive.
-The gang, adults and young ones held in an airtight container are not doing as well as those in a fresh air container.

One bottle group I put mesh over the opening, and another I put cotton cloth and have intermitently fed them by placing the material against my skin.

First I blow through the material to activate the bottle with CO2 and then tip it onto my wrist or arm, and then observe who is feeding and how long it takes.

My first purpose was to test if they could bite through material, and if so, how thick a layer can they effectively bite through. My second purpose was to have a control group, a group that is fed periodically versus a group that is not fed and to test the longevity of both.

This is what I have noticed about the material thicknesses:

-The adults do not bite through the cotton. They take no interest in it. Even if they have not eaten in months! However the newly hatched babies and the young ones not yet morphed into an adult seem to recognize skin through the cloth and eagerly chow down.
-The adults and the babies do recognize skin through mesh however and feed heartily.
-The bugs also prefer to bite at the edge of the opening rather than the middle, however if the places around the rim are taken they will snug in next to their neighbors or just wait their turn.

The latter point proves to me my theory that bed bugs prefer to feed where they perceive shelter. I quite often find a line of bites running up my shin. When I sleep I do so on my side. My leg is lying on the bed and where the mattress is in contact with my leg, along the edge there is where the feeding takes place.

In this way I can tell from this pattern, the bites occurred while I was lying down.

I also have had a line or grouping of bites across my foot near my toes and realized that the line matches exactly the straps on my sandals so that means that the bites are occurring while I am standing or sitting somewhere for long lengths of time, probably at my desk, and should investigate that area for bed bugs.

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