ON POLYHEDRAL DISEASE IN THE SILKWORM INDUCED BY X-RAYS

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Dopovidi Akad. Nauk Ukr. R.S.R.

OSTI ID:4184145

Karpov, A E

Eggs and caterpillars of various instars cf the silkworm (breed US-1) were irradiated with soft x rays ( lambda = 1.2 A). using doses from 1,000 to 8D,000 r in order to study polyhedrosis morbidity. Irradiation of eggs with doses over 10,000 r resulted in the death of practically all the embryes but no polyhedrosis was detected. Irradiation of caterpillars with doses from 10,000 to 80,000 r also caused a very high mortality (62 to 97%) due to physiological weakness and to a lesser extent to bacterial diseases. Irradiation with doses from 1,000 to 6.000 r did nst perceptibly affect the development of the caterpillars, but resulted in a significant increase in the frequency cf polyhedral disease as compared with the controls. This increase was especially marked when the caterpillars were irradiated with doses of 5,000 to 6,000 r (33.5 plus or minus 3.2% polyhedrosis-diceased individuals as compared with 8.4 plus or minus 1.8% in the controls). As shown by infection tests, the susceptibility of caterpillars to polyhedrosis did no increase after irradiation This leads to the conclusion that irradiation causes an activation of latent virus in the siilkworm. (auth)

• Research Organization: Inst. of Zoology, Academy of Sciences, Ukrainian SSR
• NSA Number: NSA-14-006181
• OSTI ID: 4184145
• Journal Information: Dopovidi Akad. Nauk Ukr. R.S.R., Journal Name: Dopovidi Akad. Nauk Ukr. R.S.R. Vol. Vol: No. 9
• Country of Publication: Country unknown/Code not available
• Language: Ukrainian

Related Subjects

AGE
BACTERIA
BIOLOGY AND MEDICINE
DISEASES
EGGS
EMBRYOS
INFECTIONS
INSECTS
LARVAE
PHYSIOLOGY
RADIATION DOSES
SILKWORM
VIRUSES
X RADIATION