The effect of modified atmospheres, an alternative to methyl bromide, on the susceptibility of immature stages of angoumois grain moth Sitotroga cerealella (Olivier) (Lepidoptera: Gelechiidae)

The angoumois grain moth, Sitotroga cerealella is recognized as a common pest of grains world-wide. This investigation aimed at determining the most effective CO2 concentration in air against the immature stages of the pest in laboratory tests. The sensitivity of newly-laid eggs ( pupae > larvae....

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Bibliographic Details
Published in:Journal of stored products research 2012-07, Vol.50, p.57-61
Main Authors: Hashem, Mohamed Y., Risha, El-Sayed M., El-Sherif, Samir I., Ahmed, Sayeda S.
Format: Article
Language:English
Subjects:
adults
Agronomy. Soil science and plant productions
air
Biological and medical sciences
Carbon dioxide
Cereal grains
Control
eggs
exposure duration
Fundamental and applied biological sciences. Psychology
Gelechiidae
General agronomy. Plant production
grains
Harvesting. Postharvest. Storage
instars
Invertebrates
laboratory techniques
larvae
Medically important nuisances and vectors, pests of stored products and materials: population survey and control
methyl bromide
Modified atmospheres
mortality
pests
Pests of stored products
Phytopathology. Animal pests. Plant and forest protection
Protozoa. Invertebrates
pupae
Sitotroga cerealella
Vegetative propagation. Sowing and planting. Harvesting
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Summary:The angoumois grain moth, Sitotroga cerealella is recognized as a common pest of grains world-wide. This investigation aimed at determining the most effective CO2 concentration in air against the immature stages of the pest in laboratory tests. The sensitivity of newly-laid eggs ( pupae > larvae. ► The efficacy of various levels of CO2 in air was tested on the immature stages of Sitotroga cerealella. ► Modified atmospheres containing 30%, 45%, 65% and 75% CO2 was investigated at 27 °C and exposure periods of 2–288 h. ► The % mortality of the newly-laid eggs increased with the increase of CO2 concentrations and exposure period. ► The % reduction of adult emergence from larvae and pupae also increased with the increase of CO2 concentrations and exposure period. ► The sensitivity of the three tested developmental stages to the four tested MAs was as follows: eggs > pupae > larvae.
ISSN:0022-474X
1879-1212
DOI:10.1016/j.jspr.2012.05.003