
短时间高温处理对棉蚜存活的影响
Effect of high temperature on survival of the cotton aphid, Aphis gossypii
吕昭智1,2**,张江国3 , 罗 亮1 , 高桂珍1,陆国良1
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DOI:
作者单位:1.中国科学院新疆生态与地理研究所 乌鲁木齐 830011;2.中国科学院干旱区生物地理与生物资源重点实验室 乌鲁木齐 830011;3.新疆阿拉山口出入境检验检疫局 博乐 833418
中文关键词: 棉蚜, 高温, 存活率, 半数致死温度
英文关键词: Aphis gossypii, high temperature, survival, LT50
中文摘要: 为探索棉蚜Aphis gossypii Glover种群动态与高温的关系,研究了不同温度(30、34、38、42、46℃)、不同处理时间(1、2、5、8 h)对棉蚜存活的影响。结果表明:在同一处理时间条件下,棉蚜的存活率随着温度的升高而降低;在同一处理温度下,棉蚜的存活率随处理时间的延长而降低。30~38℃温度范围内,棉蚜存活率降低缓慢,从42℃开始棉蚜的存活率迅速降低。棉蚜半数致死温度随着处理时间的延长而降低;相同处理时间条件下,若蚜半数致死温度高于成蚜,若蚜较成蚜更耐高温。
英文摘要: Detailed experiments were conducted to assess the effects of high temperatures (30, 34, 38, 42 and 46
℃) and the length of exposure to these (1, 2, 5 and 8 h) on the survival of Aphis gossypii Glover. The results show that survival decreased with increasing temperature and duration of exposure. The survival of A. gossypii decreased slowly between 30
℃ and 38
℃, but rapidly at 42
℃ and above. The LT
50 of aphids decreased with increasing exposure to high temperatures. Adult aphids had lower tolerance to high temperatures than nymphs.