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当前位置: 首页 > 文章 > 变温与持续低温冷暴露对红棕象甲成虫耐寒性的影响 植物保护 2015 (4) 146-150
Position: Home > Articles > Effects of fluctuant and constant low-temperature exposure on the cold hardness of the adults of the red palm weevil Rhynchophorous ferrugineus Plant Protection 2015 (4) 146-150

变温与持续低温冷暴露对红棕象甲成虫耐寒性的影响

作  者：
万婕;阎伟;刘丽;李朝绪;黄山春;马子龙;覃伟权
单  位：
中国热带农业科学院椰子研究所;中国热带农业科学院热带生物技术研究所
关键词：
红棕象甲;变温低温冷暴露;持续低温冷暴露;冷伤害
摘  要：
为明确变温低温与持续低温对红棕象甲成虫耐寒性的影响,探索不同低温环境与红棕象甲成虫冷伤害之间的关系,将红棕象甲成虫进行以下两种处理:(1)持续暴露在0、5、10与15℃;(2)雌雄成虫每日暴露于28℃2h后再分别置于以上低温下饲养,对两组试虫的死亡率及过冷却点分别进行统计与测定。结果表明:0℃低温环境下交替暴露于冷伤害修复温度与低温环境可增强试虫冷伤害修复作用;10℃与15℃低温环境下交替暴露于冷伤害修复温度与低温环境会削弱试虫冷伤害修复作用;此外,两种处理方式下,雌成虫的过冷却点相较于空白组均呈下降趋势。
译  名：
Effects of fluctuant and constant low-temperature exposure on the cold hardness of the adults of the red palm weevil Rhynchophorous ferrugineus
作  者：
Wan Jie;Yan Wei;Liu Li;Li Chaoxu;Huang Shanchun;Ma Zilong;Qin Weiquan;Coconut Research Institute,Chinese Academy of Tropical Agricultural Sciences;College of Environmental and Plant Protection,Hainan University;Institute of Tropical Bioscience and Biotechnology,Chinese Academy of Tropical Agricultural Sciences;
关键词：
Rhynchophorous ferrugineus;;fluctuant low-temperature exposure;;constant low-temperature exposure;;cold injury
摘  要：
To understand the effect of fluctuant and constant low-temperature exposure on the cold hardness of adult of red palm weevil Rhynchophorous ferrugineus(Oliver),and investigate the relationship between different low-temerature exposure regimes and the cold injuries on insects,(1)the R.ferrugineus was constantly exposed to0,5,10 and 15 ℃ without any interruption,respectively,this is for constant low-temperature exposure experiment;(2)The R.ferrugineus was exposed to 28℃for 2 h then exposed at the four low temperatures(0℃,5℃,10 ℃ and 15 ℃,respectively)for the rest of 22 h,this is for fluctuant low-temperature exposure experiment.Mortality was calculated daily and the supercooling point(SCP)of survived R.ferrugineus was determined.The results showed that alternative exposure to 28℃ and0℃ could enhance the repairing of cold injury,while the alternative exposure to28℃ and10℃ or 15℃ decreased the repairing of cold injury.Variation of SCPs existed between control group and treatment groups suggested that SCPs of R.ferrugineus were decreased after LT50 of exposing to each low temperature.

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