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Issue:ISSN 2095-1353
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Your Position :Home->Past Journals Catalog->2014年51 No.1

Hunger tolerance of Cyrtorhinus lividipennis
Author of the article:ZHENG Xu-Song HE Jing-Jing XU Hong-Xing YANG Ya-Jun TIAN Jun-Ce LV Zhong-Xian**
Author's Workplace:Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
Key Words:Cyrtorhinus lividipennis, hunger tolerance, temperature, survival time
Abstract:

     [Objectives]  The tolerance of Cyrtorhinus lividipennis to different levels of starvation and low temperature were studied in order to provide a theoretical basis for early releasing of C. lividipennis into the rice ecosystem. [Methods]  The survival of different life stages of C. lividipennis was measured under three treatments (including rice plant plus water, water only and no plant and water) under laboratory conditions. [Results]  The results showed that at26, the mean survival time of 3rd instar nymphs , 5th instar nymphs and adults, was longer when provided with rice plants plus water than those provided with water only; insects that were not provided with either plants or water had the shortest survival time. It implied that rice plants can provide nutrition for C. lividipennis. C. lividipennis adults had the strongest starvation tolerance, whereas the starvation tolerance of 3rd instar nymphs was close to those of 5th instar nymphs. The mean survival time of 3rd instar nymphs, 5th instar nymphs and adults provided with rice plants and water was 2.10, 2.22 and 4.25 days respectively. At a lower temperature of15, rice plants negatively affected adult survival. The longevities of adults fed on rice plants were shorter than those provided with water only. [Conclusion]  C. lividipennis has a strong tolerance of starvation and low temperatures, particularly at the adult stage, so adults are the optimal choice for releasing into the rice ecosystem during the nutritive growth stage of rice.

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