Feeding and Multiplication of a Psocid, Liposcelis bostrychophilus Badonnel (Psocoptera: Liposcelidae), on Wheat, Grain Screenings, and Fungi

Authors: MILLS, J. T.; SINHA, R. N.; DEMIANYK, C. J.

Source: Journal of Economic Entomology, Volume 85, Number 4, August 1992 , pp. 1453-1463(11)

Publisher: Entomological Society of America

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Feeding and multiplication of a psocid, Liposcelis bostrychophilusBadonnel, on whole and cracked wheat kernels, a mixture of flour and brewer's yeast, various kinds of dockage from unclean wheat, and 19 species of seed-borne fungi were determined at 30 ± OSC and 70 ± 5% RH. Dockage consisted of seeds of wild buckwheat, Polygonum convolvulus L.; green foxtail, Setaria viridis (L.) Beauv.; wild mustard, Sinapis arvensis L.; five types of screenings retained on sieves, and dust. Screenings retained by no. 14 (cracked, shriveled wheat and weed seeds); no. 20 (green foxtail and weed seeds); and no. 40 (chaff and hulls) sieves; cracked wheat, Triticum aestivum L. 'Katepwa'; and wild buckwheat seed were the most favorable for multiplication of this psocid. Dust, whole wheat, green foxtail seed, no. 100 screenings (grain fragments), and Rour with brewer's yeast sustained growth and development to a lesser degree. Wild mustard seed was a poor food substrate with only marginal survival and egg production. The psocid fed most voraciously on a field fungus, Bipolaris spicifera (Bainier) Subramanian, and least on a storage fungus, Aspergillus niger van Tieghem. Generally, harvest (intermediate) and field fungi including Rhyzopus stolonifer (Ehrenb.) Lind., Nigrospora sphaerica, (Saccardo) Mason, Alternaria alternate (Fr.) Keissler, and Fusarium poae (Peck) Wollenweber were preferred to storage fungi as food substrates; however, Penicillium chrysogenum Thorn supported a high mean population of psocids second only to B. spicifera . Low feeding rates, minimal oviposition, and no multiplication occurred on PeniciUium janthinellum Biourge, Fusarium sporotrichioides Sherb., Cochliobolus sativus (Ito & Kurib.) Drechsler ex Dastur, Aspergillus ochraceus Wilhelm, and Aspergillus niger van Tieghem.

Document Type: Research Article

Publication date: August 1, 1992

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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