| 关 鑫， 陈 芳， 陆永跃.广州地区棉花粉蚧雌成虫过冷却点和结冰点的季节性变化[J].广东农业科学,2015,42(4):55-59 |
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广州地区棉花粉蚧雌成虫过冷却点和结冰点的季节性变化 |
| Resistance of adults in Leptocybe invasa Fisher & La Salle to extreme temperatures |
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| DOI： |
| 中文关键词: 棉花粉蚧 过冷却点 冰点 季节性变化 |
| 英文关键词: Phenacoccus solenopsis Tinsley supercooling point freezing point seasonal variation |
| 基金项目: |
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| 中文摘要: |
| 为了解棉花粉蚧对低温忍耐能力的季节性变化，测定了广州地区该虫自然种群雌成虫的过冷却
点和结冰点。结果表明，1~9 月成虫过冷却点呈现降低趋势，9 月达到最低的-20.43益；10~12 月过冷却点呈上升
趋势，12 月最高、为-11.7益。体液结冰点变化动态相似，最高、最低出现在 12 月、9 月，分别为-9.6、-16.8益。过冷
却点、结冰点和广州地区气温之间明显负相关。 3~9 月雌成虫过冷却点值的频次分布从分散型转向聚集型，10
月~次年 2 月趋于分散。 |
| 英文摘要: |
| In order to understand the resistance of adults in Leptocybe invasa to extreme temperatures, exposureexperiment and cold acclimation experiment were used to test the resistance ability of adults from different seasons toextreme temperatures. The results showed that, L. invasa adults had both certain basal tolerance and inducedtolerance to extreme temperatures, and compared with autumn, summer bodies had higher heat resistance but lowercold resistance, autumn bodies were contrary. Besides, cold acclimation experiment proved that long-term exposureunder non-lethal low temperature may cause chilling injure to insects. |
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