Oviposition and development of trogoderma granarium coleoptera dermestidae under different ecological conditions

Singh, K.; Agrawal, N.S.; Girish, G.K.

Indian Journal of Ecology 3(1): 56-62


ISSN/ISBN: 0304-5250
Accession: 006051601

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Studies on the oviposition and development of T. granarium on hybrid and composite varieties of maize, namely Ganga-2, Ganga-3, Him-123, Vijaya and Amber, were conducted at 3 different combinations of temperatures, i.e., 30, 35 and 40.degree. C, and 4 relative humidities [RH] i.e., 45, 60, 75 and 90%. T. granarium deposited eggs among the grains and there was no indication that the insect preferred the grains of a particular variety for oviposition. According to the growth index, the varieties in the increasing order of suitability were Ganga-2, Ganga-3, Vijaya, Amber and Him-123. The maximum egg deposition was recorded at 35.degree. C and 45% RH; 35.degree. C and 60% RH were optimum for development. The development of T. granarium was not better under the RH preferred for oviposition.