Abstract
Chlortetracycline (Aureomycin®) and sorbic acid at dosage levels of 0.05-1.0% (w/w) and 1.2-8.0% (w/w), respectively, were incorporated in the diet of both the black carpet beetle, Attagenus megatoma (F.), and Trogoderma parabile Beal. Mated pairs developing from sorbic acid treatments produced progeny unable to survive the first larval instar. Chlortetracycline did not affect either species. Neither material, during the parental generation, affected larval or adult weight, survival to adult stage, pupal or adult longevity, or larval or adult melinization. Preliminary microbiological attempts to isolate and establish the presence of commensual or mutualistic symbiotes were unsuccessful with both species, as were attempts to locate intracellular symbiotes, mycetocytes, or mycetomes by histological examination of larvae and adults. Comparative gross anatomical studies of adults of both species from the highest level treatments and untreated controls revealed no differences in development of ovaries or testes.
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