High temperature and controlled atmosphere treatment of codling moth (Lepidoptera: Tortricidae) infested walnuts using a gas-tight treatment chamber

A prototype treatment chamber for application of high temperature alone or with controlled atmospheres was designed and tested for disinfesting walnut fruit of diapausing larvae of the codling moth, Cydia pomonella (L.). All treatments were made at 43 degrees C with air, 0.5% oxygen (in nitrogen), o...

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Bibliographic Details
Published in:Journal of economic entomology 1996-06, Vol.89 (3), p.712-714
Main Authors: SODERSTROM, E. L, BRANDL, D. G, MACKEY, B. E
Format: Article
Language:English
Subjects:
Biological and medical sciences
carbon dioxide
control de insectos
Cydia pomonella
dioxido de carbono
dioxyde de carbone
equipo para control de plagas
Fundamental and applied biological sciences. Psychology
heat treatment
infestacion
infestation
insect control
Invertebrates
larvae
larvas
larve
Lepidoptera
lutte antiinsecte
materiel de lutte antiparasite
Medically important nuisances and vectors, pests of stored products and materials: population survey and control
noix
nuez
oxigeno
oxygen
oxygene
pest control equipment
Pests of stored products
Tortricidae
traitement thermique
tratamiento termico
walnuts
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Summary:A prototype treatment chamber for application of high temperature alone or with controlled atmospheres was designed and tested for disinfesting walnut fruit of diapausing larvae of the codling moth, Cydia pomonella (L.). All treatments were made at 43 degrees C with air, 0.5% oxygen (in nitrogen), or 98% carbon dioxide (balance air). Earlier in vitro laboratory research, at 43 degrees C, provided exposure time estimates for 95% mortality of 45.2 h for air, 14.6 h for 0.5% O2, and 5.2 h for 98% CO2. Treatment of diapausing codling moth larvae within walnuts under these conditions in the prototype chamber resulted in mortalities of 97.6% for air, 96.1% for 0.5% O2, and 97.6% for CO2. Surviving larvae were moribund and subsequently died.
ISSN:0022-0493
1938-291X
DOI:10.1093/jee/89.3.712