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Where it all begins...
Collecting termites for research
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| Wooden
termite trap |
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5-gallon cans at one colony at
the university campus |
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As diverse as our various studies may be, each
laboratory-bound project shares one common requirement: a
large supply of termites. The U.H. Termite Project has
taken advantage of the unique opportunity afforded it by
being located in a region where there is
no shortage of Formosan subterranean termites. There is
an abundant supply of naturally-occurring termite
colonies throughout the island of Oahu. The Termite
Project has tapped in to a small handful of these colonies; a few of
which are on the university campus, while others are scattered throughout the island.
Termite collection is a simple,
three-step process. The first, and probably most
important, is finding out where the termites are located.
Wooden stakes, approximately 10 inches long, are pounded
in the ground in a grid pattern in a location where
termites are suspected. It's a hit-or-miss approach, but
if there is an existing colony in that area, chances are
good that many of the stakes will be attacked.
The
second step is setting up wooden "termite
traps" to collect the insects. Using a procedure pioneered
by Dr. Minoru Tamashiro and colleagues in 1973, the infested stakes are
covered by these wooden "trap" boxes, then
protected by 5-gallon cans. A number of modifications of this basic
technique have also been developed for different field situations.
It can take as little
as a few weeks or up to several months for full
recruitment into a new trap. Traps placed over heavily
infested stakes within strong existing colonies can
become active within a matter of days.
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| The final step is collecting the traps, bringing them
back to the laboratory, and extracting the termites from
the traps. This is the most labor-intensive part of
the collection process. Once extracted, the termites are
separated from the dirt & debris and the required
numbers are counted manually. On the average, the wooden
traps "capture" appoximately 2,000 termites. On
rare occasions, as many as 10,000 termites can be
"captured" in a single trap. |
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Extracting termites from a termite trap |
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References
Tamashiro, M., J.K. Fujii & P.Y.
Lai. 1973. A simple method to observe, trap and prepare
large numbers of subterranean termites for laboratory and
field experiments. Environ. Entomol. 2: 721-722.
Ewart, D.McG., J.K. Grace, R.T. Yamamoto, and M.
Tamashiro. 1992. Hollow stakes for detecting subterranean termites
(Isoptera: Rhinotermitidae). Sociobiology 20: 17-22.
Grace, J.K., J.R. Yates, & C.H.M. Tome. 1995.
Modification of a commercial bait station to collect large numbers of
subterranean termites (Isoptera: Rhinotermitidae). Sociobiology 26:
259-268.
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