浙江农业学报 ›› 2023, Vol. 35 ›› Issue (3): 624-629.DOI: 10.3969/j.issn.1004-1524.2023.03.15

• 植物保护 • 上一篇    下一篇

不同温度对益蝽过冷却点和冰点的影响

冷猛1,2(), 姚地慧1, 龙凯1, 赵海燕1,3,*(), 杨茂发1,3, 于晓飞1,3   

  1. 1.贵州大学 烟草学院,贵州省烟草品质研究重点实验室,贵州 贵阳 550025
    2.广西壮族自治区农业科学院 植物保护研究所,广西 南宁 530007
    3.贵州大学 昆虫研究所,贵州 贵阳 550025
  • 收稿日期:2022-07-24 出版日期:2023-03-25 发布日期:2023-04-07
  • 通讯作者: *赵海燕,E-mail:haitianyiyan7611@163.com
  • 作者简介:冷猛(1997—),男,贵州毕节人,硕士研究生,研究方向为生物防治。E-mail:lm_1718@163.com
  • 基金资助:
    广西自然科学基金青年科学基金(2019GXNSFBA245004);贵州省科技创新人才团队(黔科合人才平台-CXTD〔2021〕004)

Effects of different temperature on supercoolings point and freezing point of Picromerus lewisi Scott

LENG Meng1,2(), YAO Dihui1, LONG Kai1, ZHAO Haiyan1,3,*(), YANG Maofa1,3, YU Xiaofei1,3   

  1. 1. Guizhou Provincial Key Laboratory of Tobacco Quality Research, College of Tobacco Science, Guizhou University, Guiyang 550025, China
    2. Plant Protection Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
    3. Institute of Entomology, Guizhou University, Guiyang 550025, China
  • Received:2022-07-24 Online:2023-03-25 Published:2023-04-07

摘要:

为明确不同温度胁迫下益蝽(Picromerus lewisi Scott)过冷却点和冰点的变化,对益蝽雌、雄成虫和三龄若虫进行1 h不同温度(30、35、40 ℃)的处理,测定其过冷却点和冰点的变化。结果表明:高温处理导致益蝽不同虫态的过冷却点和冰点发生改变。经30、35、40 ℃处理后,益蝽三龄若虫的冷却点和冰点较对照(25 ℃)显著(P<0.05)上升。经30 ℃处理后,雌、雄成虫的过冷却点与对照相比差异不显著;经35、40 ℃处理后,雌、雄成虫的过冷却点和冰点较对照显著升高。对比雌、雄成虫和三龄若虫,不同温度处理下,均以雄成虫的过冷却点和冰点最低。综上,适时高温处理提高了益蝽不同虫态的过冷却点和冰点,缩小其温度适应范围。经同一温度处理后,雄虫对低温的适应性更强。

关键词: 益蝽, 过冷却点, 冰点, 温度

Abstract:

In order to clarify the changes of supercooling point and freezing point of Picromerus lewisi Scott under different temperature, female adult, male adult and third instar of P. lewisi Scott were treated at different temperatures(30, 35, 40 ℃) for 1 h, and the changes of supercooling point and freezing point were measured. It was shown that high temperature changed the supercooling point and freezing point of P. lewisi Scott. After treatments under 30, 35, 40 ℃, the supercooling point and freezing point of the third instar of P. lewisi Scott increased significantly (P<0.05) as compared with those under control (25 ℃). The supercooling point of male and female P. lewisi Scott treated at 30 ℃ did not show significant difference with those under control, yet the supercooling point and freezing point of male and female P. lewisi Scott treated at 35 ℃ and 40 ℃ were significantly higher than those under control. The supercooling point and freezing point of male adult were the lowest under different treatments amomg all the tested insect states of P. lewisi Scott. Thus, high temperature could elevate the supercooling point and freezing point of P. lewisi Scott, reduce the temperature adaptation range. Among all the tested insect state of P. lewisi Scott, male adult could better adapt to the temperature change.

Key words: Picromerus lewisi Scott, supercooling point, freezing point, temperature

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