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GAMMA RADIATION SENSITIVITY OF THE SPIDER BEETLE, GIBBIUM PSYLLOIDES (COLEOPTERA: PTINIDAE)

Published online by Cambridge University Press:  31 May 2012

John H. Brower  and
Hilda C. Scott
John H. Brower
Affiliation:
Market Quality Research Division, A.R.S.-U.S.D.A., Savannah, Georgia
Hilda C. Scott
Affiliation:
Market Quality Research Division, A.R.S.-U.S.D.A., Savannah, Georgia
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Abstract

The effects of seven gamma radiation dosages from 5 to 100 krad on all metamorphic stages of the spider beetle, Gibbium psylloides (Czenpinski), were studied. Five kilorads prevented development of adults from treated eggs and larvae. Some adults emerged from the pupal cocoon at all treatment levels except 50 and 100 krad, but their longevity was greatly reduced. Adults were fairly resistant to sterilizing effects of the radiation. Twenty kilokrads was not completely sterilizing to either males or females, but fecundity was greatly reduced. The longevity of treated adults was significantly reduced, but some survived for 20 weeks after a 20-krad exposure. Adults and pupae of this species were more radiation resistant than were most other stored-product Coleoptera.

Type
Articles
Information
The Canadian Entomologist , Volume 104 , Issue 10 , October 1972 , pp. 1551 - 1556
Copyright
Copyright © Entomological Society of Canada 1972

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References

Anonymous. 1968. Low-dose gamma radiation of the treatment of food. CFR Title 21, Chap, I, Sect. 121.3003. [30 FR 15845, Dec. 23, 1965, as amemded at 31 FR 9491. July 13, 1966; 32 FR 3443, Mar. 2, 1967.]Google Scholar
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