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| Effects of High-Quality Aromatic Rice Varieties on the Fitness of the Striped Stem Borer, Chilo suppressalis (Walker) in Central China |
| DU Xue-zhu, WANG Yong, CHEN Long-jia, PENG Chuan-hua, MA Wei-hua, LEI Chao-liang |
1.College of Life Science, Hubei University, Wuhan 430062, P.R.China
2.Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, Huazhong Agricultural University, Wuhan 430070,P.R.China
3.Hubei Plant Protection Station, Wuhan 430070, P.R.China |
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摘要 The striped stem borer (SSB), Chilo suppressalis (Walker) (Lepidoptera: Pyralidae), is a major pest of rice in China. Variation in host-plant quality may affect the body size of herbivorous insects, which in turn, can determine their lifehistory parameters such as survival, fecundity and fitness. In this study, we tested the effects of high-quality aromatic rice varieties on the fitness of SSB in China. Results showed that 1st instar larvae had higher penetrating rates and survival rates on the high-quality aromatic rice varieties (EX-1 and WX-988) than that on the non-aromatic rice varieties (EZ-5 and LYP-9). In addition, shorter developmental periods, greater female pupal weights and higher of other life-history parameters (hatching rate, pupation rate, eclosion rate and increase index) were found on the high-quality aromatic rice varieties, although only female pupal weight showed a significant difference between the two varieties. The highest dead heart rate was found on the aromatic rice variety of EX-1. These results indicate that SSB sustains a lower fitness cost when consuming the high-quality aromatic rice varieties (EX-1 and WX-988) than on the non-aromatic rice varieties (EZ-5 and LYP-9) in Central China.
Abstract The striped stem borer (SSB), Chilo suppressalis (Walker) (Lepidoptera: Pyralidae), is a major pest of rice in China. Variation in host-plant quality may affect the body size of herbivorous insects, which in turn, can determine their lifehistory parameters such as survival, fecundity and fitness. In this study, we tested the effects of high-quality aromatic rice varieties on the fitness of SSB in China. Results showed that 1st instar larvae had higher penetrating rates and survival rates on the high-quality aromatic rice varieties (EX-1 and WX-988) than that on the non-aromatic rice varieties (EZ-5 and LYP-9). In addition, shorter developmental periods, greater female pupal weights and higher of other life-history parameters (hatching rate, pupation rate, eclosion rate and increase index) were found on the high-quality aromatic rice varieties, although only female pupal weight showed a significant difference between the two varieties. The highest dead heart rate was found on the aromatic rice variety of EX-1. These results indicate that SSB sustains a lower fitness cost when consuming the high-quality aromatic rice varieties (EX-1 and WX-988) than on the non-aromatic rice varieties (EZ-5 and LYP-9) in Central China.
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Received: 11 October 2012
Accepted:
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| Fund: This study was supported by the National Special Transgenic Project from the Ministry of Agriculture, China (2011ZX08012-004). |
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Corresponding Authors:
Correspondence MA Wei-hua, Tel: +86-27-87287207, Fax: +86-27-87281938, E-mail: weihuama@mail.hzau.edu.cn; PENG Chuan-hua, Tel: +86-27-87395841, Fax:
+86-27-87750345, E-mail: pengchuanhua@hotmail.com
E-mail: weihuama@mail.hzau.edu.cn
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Cite this article:
DU Xue-zhu, WANG Yong, CHEN Long-jia, PENG Chuan-hua, MA Wei-hua, LEI Chao-liang.
2013.
Effects of High-Quality Aromatic Rice Varieties on the Fitness of the Striped Stem Borer, Chilo suppressalis (Walker) in Central China. Journal of Integrative Agriculture, 12(7): 1208-1214.
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