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FIELD EVALUATION OF A PHEROMONE TO DETECT ADULT RUSTY GRAIN BEETLES, CRYPTOLESTES FERRUGINEUS (COLEOPTERA: CUCUJIDAE), IN STORED GRAIN1

Published online by Cambridge University Press:  31 May 2012

S.R. Loschiavo
Affiliation:
Agriculture Canada Research Station, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
J. Wong
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
N.D.G. White
Affiliation:
Agriculture Canada Research Station, 195 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2M9
H.D. Pierce Jr.
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
J.H. Borden
Affiliation:
Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6
A.C. Oehlschlager
Affiliation:
Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, Canada V5A 1S6

Abstract

Insect-detection traps baited with the synthetic aggregation pheromones of the rusty grain beetle, Cryptolestes ferrugineus (Stephens), were inserted into grain stored in primary elevator annex bins and in farm bins, or suspended in partly full or empty bins and outside under the eaves of bins. The mixture of the synthetic pheromones 4,8-dimethyl-E,E-4,8-decadienolide (ferrulactone I) and (Z)-3-dodecen-11-olide (ferrulactone II) was released from hollow polyester fibers (0.203 mm ID) positioned in the interior of the insect-detection trap. In annex bins, the number of beetles found in baited traps after 1 week ranged from 0 to 7300. In these bins, more beetles were found in traps at a depth of 30–60 cm than at 150–250 cm, and in traps with 2 fibers containing pheromone rather than with 1 fiber. In farm bins, baited and unbaited traps were relatively ineffective at grain temperatures below 14 °C. More beetles were found in baited than in unbaited traps in farm bins but the numbers were small and the differences were not significant. Few beetles were found in traps suspended in partly full or empty farm bins and none in traps suspended outside under the eaves.

Résumé

On a introduit des pièges à insectes appâtés avec les phéromones d’aggrégation synthétiques du cucujide roux, Cryptolestes ferrugineus (Stephens), dans des grains stockés dans des silos annexes d’élévateurs primaires et des silos de fermes; on en a aussi suspendu dans des silos partiellement ou entièrement vides et sous l’avant-toit de silos. Le mélange des phéromones synthétiques 4,8-diméthyl-E,E-4,8-décadiènolide (ferrulactone I) et (Z)-3-dodécène-11-olide (ferrulactone II) était libéré à partir de fibres creuses de polyester (0,203 mm DI) placées à l’intérieur des pièges. Dans les silos annexes, le nombre de cucujides capturés dans une semaine a varié de 0 à 7300. Dans ces silos, on a trouvé plus de cucujides à une profondeur de 30–60 cm qu’à 150–250 cm, et plus avec des pièges à 2 fibres qu’à 1 seule. Dans les silos de fermes, les pièges appâtés ou non se sont avérés inefficaces à des températures sous 14 °C; dans ces silos, on a trouvé plus de cucujides dans les pièges appâtés que non appâtés, mais les nombres étaient faibles et les différences non significatives. On a capturé peu de cucujides avec les pièges suspendus dans les silos de fermes partiellement ou entièrement vides, et aucun avec ceux placés sous l’avant-toit des silos.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1986

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