Dehydrogenase Systems from Fat Body of Susceptible and Chlordane. Resistant Blattella germanica (L.)

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Abstract
The presence and levels of diphosphopyridine nucleotide malic dehydrogenase and triphosphopyridine nucleotide glucose- 6-phosphate and 6-phosphogluconate dehydrogenases have been established in the fat body of a susceptible and a chlordane resistant strain of cockroach (Blattella germanica (L.)). The method used was spectrophotometric measurement of the enzymatically reduced nucleotides. A statistically significant difference between male insects of the susceptible and resistant strains was found for malic dehydrogenase. It is not known how the difference is related to resistance.