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Wide tropical and temperate distribution.
One of the principal pests of bulk stored grain. Relatively cold hardy, although
minimum breeding temperature is 16 - 17�c. In
warm climates, this species exists outdoors, feeding on acorns and seeds. |
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Sawtooth Grain Beetle
Image Copyright - Aventis
Environmental Science 1964. Reproduced with kind permission of Aventis Environmental
Science. |
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As one of the main pests of bulk grain storage,
O. surenamensis is one of the principle SPI pests. It has an extraordinarily high
breeding potential which is linked to the ability of infestations to increase the
temperature of their micro-habitat. This may lead to sprouting, charring and large
scale economic loss. |
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Complete metamorphosis life cycle. Mated
female may lay between 100 and 400 eggs over a period of 6 - 10 weeks. Larvae attack
broken or damaged grains, usually starting with the germ. Progression from egg to
adult can be completed in 20 days under optimum conditions, although 3 months is more
usual. |
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Good hygiene practises, and quarantine of
inbound goods is recommended. Monitoring products and systems may be used to time
treatments to best effect. Treatments may include Atmosphere control, temperature
control, and Fumigation / use of residual insecticides where appropriate. |
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