Radiographic Studies of Angoumois Grain Moth Development in Wheat, Corn, and Sorghum Kernels1
Authors: MILLS, ROBERT B.; WIBUR, DONALD A.
Source: Journal of Economic Entomology, Volume 60, Number 3, June 1967 , pp. 671-677(7)
Publisher: Entomological Society of America
Abstract:Daily X-ray radiographs were made of 73 wheat, 44 Corn, and 66 sorghum kernels to study (with little or no disturbance to the insects) development and behavior of larvae and pupae of Angoumois grain moth, Silolroga cercalella(Olivier), inside the kernels. Lengths of later stadia were generally ascertained, because time of molting to the penultimate and last instars usually could be determined.
The ranges and means of the periods from hatching to penultimate instar were 8-33 days and 14.9 days in wheat, 9-28 and 13.9 days in corn, and 7-31 and 12.9 days in sorghum; the penultimate larval period was 1-10 and 5.3 days in wheat, 3-7 and 4.7 in corn, and 3-7 and 4.5 in sorghum; the penultimate larval period (including prepupa) 6-12 and 8.3 days in wheat, 6-10 and 7.9 in corn, and 5-8 and 6.4 in sorghum; pupal period 8-11 and 9.6 days in wheat, 7-10 and 8.9 in corn, and 7-10 and 9.3 in sorghum. Ranges and means of the total larval-pupal periods were 29-63 and 37.9 days in wheat, 28-52 and 35.3 in corn, and 25-54 and 33.0 in sorghum.
Insects with longer developmental periods spent disproportionately more time as earlier instars than the insects with shorter developmental periods.
Document Type: Research Article
Publication date: June 1, 1967
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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