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Differentiation of Laboratory Strains of Red Flour Beetle Tribolium castaneum Collected from Various Areas.

We recently reported polymorphism in the mitochondrial genes of Tribolium castaneum, a stored grain pest. Here, we show that T. castaneum samples from the main island of Japan can be easily differentiated from samples from other areas by using real-time PCR with minor groove binding (MGB) TaqMan probes containing a single nucleotide polymorphism (SNP) to amplify a 179-bp fragment. This assay was also applicable to samples stored at room temperature for 5 months after natural death, and samples whose DNA was artificially degraded by heat, pressure, or gamma-ray irradiation.