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Effect of 60Co-γ Ray Radiation on the Reproduction of Cochineal (Homoptera: Coecoidea: Dactylopiidae)
Agriculture, Forestry and Fisheries
Volume 5, Issue 6, December 2016, Pages: 243-248
Received: Oct. 26, 2016; Accepted: Nov. 7, 2016; Published: Dec. 2, 2016
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Chen Hai-You, Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming, China
Qin Zhi-Hong, Xishan Forestry Farm, Kunming Forestry Bureau, Kunming, China
Zhang Zhong-He, Research Institute of Resource Insects, Chinese Academy of Forestry, Kunming, China
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60Co-γ ray has been used to develop new varieties of cochineal. The purpose of this study was to assess the effect of 60Co-γ ray radiation on the reproduction of cochineal. Different doses of 60Co-γ ray were used to treat cochineal and the ability of generating offspring was determined. The results showed that high dose of 60Co-γ ray treatment dramatically reduced the ability of cochineal to produce offspring. F1 generation of cochineal treated with high dose of 60Co-γ (3000rad) only produced small number of F2 generation and F2 cochineal were no longer able to produce offspring. In contrast, low dose of 60Co-γ ray treatment dramatically increased the number of female F1, while the number of male F1 was only slightly increased compared with those untreated cochineal. Under the dose of 500rad, the reproductive ability of F2 generation was significantly increased, but the female body volume and the number of brooding eggs were relatively small. Under the dose of 1000rad, the female body volume and the number of brooding eggs were not significantly different from those untreated cochineal. The female body volume and the number of brooding eggs in F3 generation were slightly higher than the control under both 500rad and 1000rad doses.
60Co-γ Ray, Radiation, Cochineal, Offspring, Biological Characteristics
To cite this article
Chen Hai-You, Qin Zhi-Hong, Zhang Zhong-He, Effect of 60Co-γ Ray Radiation on the Reproduction of Cochineal (Homoptera: Coecoidea: Dactylopiidae), Agriculture, Forestry and Fisheries. Vol. 5, No. 6, 2016, pp. 243-248. doi: 10.11648/j.aff.20160506.15
Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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