Distribution of the Rusty Grain Beetle (Coleoptera: Cucujidae) in Columns of Wheat Stored Dry or with Localized High Moisture Content

Author: Loschiavo, S. R.

Source: Journal of Economic Entomology, Volume 76, Number 4, August 1983 , pp. 881-884(4)

Publisher: Entomological Society of America

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Abstract:

Adults of the rusty grain beetle, Cryptolestes ferrugineus (Stephens), moved downward after being placed at the top of 125- or 250-cm-high columns of wheat at 13 or 13.4% moisture content. From the first to the third day, most beetles were near the top of the column, but after 3 days most were found near the bottom. The number near the bottom increased over time. Beetle distribution in columns stabilized between the third and fifth day. Conversely, from 80 to 92% of the beetles aggregated at the top or middle zones of the column when wheat of 16 to 17% moisture content was placed only in these zones. Beetle distribution in the moist zones became stable within 3 days.

Document Type: Research Article

Publication date: August 1, 1983

More about this publication?
  • 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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