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FATE OF THE SAN JOSÉ SCALE AND THE EUROPEAN FRUIT SCALE (HOMOPTERA: DIASPIDIDAE) ON APPLES AND PRUNES HELD IN STANDARD COLD STORAGE AND CONTROLLED ATMOSPHERE STORAGE1

Published online by Cambridge University Press:  31 May 2012

C. V. G. Morgan
C. V. G. Morgan
Affiliation:
Research Station, Canada Department of Agriculture, Summerland, British Columbia
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Abstract

The San José scale, Aspidiotus perniciosus Comstock, died within 84 to 140 days on Winesap apples harvested in early October and placed in standard cold storage or controlled atmosphere storage under laboratory or commercial conditions. The scale died more quickly in controlled atmosphere storage than in standard cold storage. The black caps of the first instar stage were the most resistant to mortality factors in cold storage. It is suggested that Winesap apples infested with the San José scale can be given an inspection certificate for export that guarantees freedom from live scale if the fruit has been stored for specified periods.

The San José scale on Italian prunes died within 34 days when the harvested fruit was kept in standard cold storage.

A complete mortality of the European fruit scale, Aspidiotus ostreaeformis Curtis, on Hyslop crab, McIntosh, or Newtown apples, could not be obtained, in any type of storage.

Type
Articles
Information
The Canadian Entomologist , Volume 99 , Issue 6 , June 1967 , pp. 650 - 659
Copyright
Copyright © Entomological Society of Canada 1967

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