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茶银尺蠖的发育起点温度和有效积温
The lower threshold temperature and thermal constant of Scopula subpunctaria
耿书宝;侯贺丽;江孟娜;乔 利;尹 健;张方梅
点击:581次 下载:29次
DOI:10.7679/j.issn.2095-1353.2022.082
作者单位:信阳农林学院,信阳 464000;信阳农林学院,信阳 464000;信阳农林学院,信阳 464000;信阳农林学院,信阳 464000;信阳农林学院,信阳 464000;信阳农林学院,信阳 464000
中文关键词:茶银尺蠖;温度;发育历期;发育起点温度;有效积温
英文关键词:Scopula subpunctaria; temperature; developmental period; lower threshold temperature; thermal constant
中文摘要:
【目的】 探索温度对茶银尺蠖 Scopula subpunctaria生长发育的影响,明确其发育起点温度和有效积温。【方法】 将茶银尺蠖置于13、16、19、22、25、28和31 ℃的恒定温度下饲养,测定其发育历期;运用线性回归方程,求出茶银尺蠖各个发育阶段的发育起点温度和有效积温。【结果】 温度对茶银尺蠖各个发育阶段的发育历期均有显著影响(P<0.05),且发育历期随温度升高而逐渐缩短。卵-蛹的发育历期从13 ℃下的105.77 d缩短到31 ℃下的29.62 d。茶银尺蠖卵、幼虫、预蛹、蛹和卵-蛹的发育起点温度分别为7.51、7.94、3.43、8.73和7.95 ℃,有效积温分别为120.92、276.20、43.65、156.99和595.24 日∙度。在13、16、19、22、25、28和31 ℃温度下,卵-蛹的总存活率分别为50.31%、47.21%、60.27%、48.30%、69.77%、36.96%和12.67%。【结论】 茶银尺蠖发育速率随着温度升高而加快,25 ℃时茶银尺蠖的存活率最高,25 ℃是茶银尺蠖生长发育最适合的温度。本研究结果为茶银尺蠖的田间种群数量增长、年发生代数和发生量预测预报及防治提供理论依据。
英文摘要:
[Objectives]  To investigate the effect of temperature on the development of Scopula subpunctaria and determine the lower threshold temperature and thermal constant of this species. [Methods]  The developmental period of S. subpunctaria was determined under at 13, 16, 19, 22, 25, 28 and 31 ℃ and the lower threshold temperature and thermal constant of different developmental stages calculated using linear regression. [Results]  Temperature had a significant influence on the developmental duration of each stage (P<0.05), which decreased as temperature increased. The developmental period of eggs-pupae decreased from 105.77 d at 13 ℃ to 29.62 d at 31 ℃. The lower threshold temperatures of eggs, larvae, pre-pupae, pupae and eggs-pupae were 7.51, 7.94, 3.43, 8.73 and 7.95 ℃, respectively, and their thermal constants were 120.92, 276.2, 43.65, 156.99 and 595.24 degree∙days, respectively. At 13, 16, 19, 22, 25, 28 and 31 ℃, the survival rate of eggs-pupae was 50.31%, 47.21%, 60.27%, 48.30%, 69.77%, 36.96% and 12.67%, respectively. [Conclusion]  The development rate of S. subpunctaria increased with temperature. The survival rate of eggs-pupae was highest at 25 ℃, which was the most suitable temperature for the growth and development of this species. These results provide important information for predicting and preventing the growth of S. subpunctaria populations, and for implementing control measures for this pest in the field.
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