The Effects of Cobalt 6O Gamma Radiation on the Development, Fecundity and Ecc Viability in Acanthomia Tomentosicollis Stal (Hemiptera, Coreidae

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Egwuatu R.I
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The effects of various doses of cob-aH-60 gamma radiation administered to 4th and 5th instar nymphs of A. tomentosicollis Stal arereported. The durations of nymphal development were not different in both the 'treated and untreated insects but nymphal mOl1tality increased with an increase in the dosage of radiation. Deformities of the Wing were very common among newly emerged adults, especially at the higher doses of radiation. An increase in the dosage of radiation decreased the number of eggs deposited and no eggs were deposited at 4000 and 5000 rads. A dose of 1000 rads induced reproductive sterility in the adults emerging from radiated 4th instar nymphs whereas a higher dose of 3000 rads induced reproductive sterility in adults emerging from radiated 5th instar nymphs.)
East African Agricultural And Forestry Journal, 43 (No. 3), p. 266-273