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THE INFLUENCE OF SOME FUNGI IN FLOUR, AND HUMIDITY ON THE SURVIVAL AND DEVELOPMENT OF CRYPTOLESTES TURCICUS (COLEOPTERA: CUCUJIDAE)1

Published online by Cambridge University Press:  31 May 2012

S. S. Chang  and
S. R. Loschiavo
S. S. Chang
Affiliation:
Department of Entomology, University of Manitoba, Winnipeg
S. R. Loschiavo
Affiliation:
Research Station, Canada Department of Agriculture, Winnipeg
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Abstract

The flour mill insect, Cyrptolestes turcicus (Grouvelle), was reared on seven diets at 28 ± 1 °C and at relative humidities of 90% and 60% as follows: flour from a mill previously infested with C. turcicus, commercial flour sterilized with propylene oxide, unenriched commercial flour, and four laboratory-prepared diets each containing a different concentration of fungi isolated from the previously-infested flour.

At 90% relative humidity, larvae developed fastest on the infested flour and on the prepared flour–fungi diets, and slowest in sterilized flour. Fungal concentration and rate of larval development were inversely correlated. The highest survival of larvae occurred on the flour–fungi diets and the highest mortality on the flour from the infested mill. There was no clear relationship between rate of pupal development and concentration of fungus. Of the prepared diets, that with the largest concentration of fungus promoted the fastest rate of pupal development. Survival of pupae was about 20% higher on the flour–fungi diets than on the sterilized flour. At 60% relative humidity about 50% of larvae and pupae survived and completed development on the flour–fungi diet containing 1% by weight of fungi, and on the flour from the infested mill but none survived on any of the other diets. Sixty per cent of larvae and 83% of pupae survived and developed on the flour from the infested mill. None of the larvae survived on any of the other diets.

Type
Articles
Information
The Canadian Entomologist , Volume 103 , Issue 2 , February 1971 , pp. 261 - 266
Copyright
Copyright © Entomological Society of Canada 1971

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References

Abdel-Rahman, H. A., Christensen, C. M., and Hodson, A. C.. 1969. The relationship between Plodia interpunctella (Hb.) (Lepidoptera, Phycitidae) and stored-grain fungi. J. Stored Prod. Res. 4: 331–337.CrossRefGoogle Scholar
Agrawal, N. S., Christensen, C. M., and Hodson, A. C.. 1957. Grain storage fungi associated with the granary weevil. J. econ. Ent. 50: 659–663.CrossRefGoogle Scholar
Armolik, N., Dickson, J. G., and Dickson, A. D.. 1956. Deterioration of barley in storage by microorganisms. Phytopathology 46: 457–461.Google Scholar
Ayerst, G. 1966. The influence of physical factors on deterioration by moulds; in Micro-biological Deterioration in the Tropics. Soc. Chem. Ind. Monogr. 23: 14–20.Google Scholar
Barlow, J. S. and House, H. L.. 1956. Ethylene oxide for sterilizing diets. Science 123: 229.CrossRefGoogle ScholarPubMed
Dyte, C. E. 1961. A study of the development of beetle infestation in flour-milling machinery. Ann. appl. Biol. 49: 378.CrossRefGoogle Scholar
Evlakhova, A. A. 1953. The application of the microbiological method in the control of the noxious little tortoise. (In Russian.) Dokl. vseoyuz. Akad. sel.-khoz. Nauk Lenina 18 (3): 36–39. Moscow.Google Scholar
(From author's abstract in Rev. appl. Ent. (A) 41: 428–429, 1953.)Google Scholar
Hansen, H. N. and Snyder, W. C.. 1947. Gaseous sterilization of biological materials for use as culture media. Phytopathology 37: 369–371.Google ScholarPubMed
Hawk, E. A. and Mickelson, O.. 1955. Nutritional changes in diets exposed to ethylene oxide. Science 121: 442–444.CrossRefGoogle ScholarPubMed
Kodaira, Y. 1961. Toxic substances to insects, produced by Aspergillus ochraceus and Oopsra destructor. Agric. biol. Chem. 25: 261–262.CrossRefGoogle Scholar
Lefkovitch, L. P. 1962. The biology of Cryptolestes turcicus (Grouvelle) (Col., Cucujidae). A pest of stored and processed cereals. Proc. zool. Soc. Lond. 138: 23–35.CrossRefGoogle Scholar
Loschiavo, S. R. and Sinha, R. N.. 1966. Feeding, oviposition, and aggregation by the rusty grain beetle, Cryptolestes ferrugineus (Col., Cucujidae) on seed-borne fungi. Ann. ent.Soc. Am. 59: 578–585.CrossRefGoogle Scholar
Misra, C. P., Christensen, C. M., and Hodson, A. C.. 1961. Angoumois grain moth, Sitotroga cereallella, and storage fungi. J. econ. Ent. 54: 1032–1033.CrossRefGoogle Scholar
Panasenko, V. T. 1967. Ecology of microfungi. Bot. Rev. 33: 189–215.CrossRefGoogle Scholar
Rilett, R. O. 1949. The biology of Laemophloeus ferrugineus (Steph.). Can. J. Res. (D) 27: 112–148.CrossRefGoogle ScholarPubMed
Sikorowski, P. P. 1964. Interrelation of fungi and insects to deterioration of stored grains. Wash. St. Univ. agric. Exp. Stn Tech. Bull. 42.Google Scholar
Sinha, R. N. 1965. Development of Cryptolestes ferrugineus and Oryzaephilus mercator on seed-borne fungi. Entomologia exp. appl. 8: 309–313.CrossRefGoogle Scholar
Solomon, M. E. 1951. Control of humidity with potassium hydroxide, sulphuric acid, or other solutions. Bull. ent. Res. 42: 543–554.CrossRefGoogle Scholar
Solomon, M. E., Cunnington, A. M., and Ayerst, G.. 1964. Storage fungi antagonistic to the flour mite (Acarus siro L.). J. appl. Ecol. 1: 119–125.CrossRefGoogle Scholar
Van Wyk, J. H., Hodson, A. C., and Christensen, C. M.. 1959. Microflora associated with the confused flour beetle, Tribolium confusum. Ann. ent. Soc. Am. 52: 452–463.CrossRefGoogle Scholar
Woodroffe, G. E. 1962. The status of the foreign gain beetle, Ahasverus advena (Waltl) (Col., Silvanidae), as a pest of stored products. Bull. ent. Res. 53: 537–540.CrossRefGoogle Scholar