Section 1
Chapter 62

Digestion and distribution of tricalcium phosphate in the cockroach, Periplaneta americana Linnaeus

Gupta, M.R.; Radhakrishnamurty, R.; Majumder, S.K.

Indian Journal of Entomology 34(1): 46-49


ISSN/ISBN: 0367-8288
Accession: 000061757

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When administered to adults of Periplaneta americana (L.) in the diet, tricalcium phosphate was toxic at concentrations of 5% and above. Tricalcium phosphate labelled with 45Ca or 32P was administered to cockroaches at 1% in the diet for 3 days and its distribution and metabolism studied; the tissues of male cockroaches were found to exhibit less radioactivity than those of females. In the male, the haemolymph had a higher level of radioactivity than other tissues. In the female, the genital tissue and the haemolymph showed the greatest activity of both 45Ca and 32P. The radioactivity in the tissues decreased steadily after ingestion of the radioactive material ceased.

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