Cold hardiness and supercooling capacity in the overwintering larvae of the codling moth, Cydia pomonella.
Cold hardiness and supercooling capacity in the overwintering larvae of the codling moth, Cydia pomonella.
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DOI：
10.1673/031.010.8301
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
Moharramipour S
中科院分区：
文献类型：
--
作者：
Khani A;Moharramipour S
苹果小食心虫Cydia pomonella L.(鳞翅目：卷蛾科)是一种世界性的苹果害虫，是一种不耐冻的生物，是最耐寒的害虫之一。本研究的目的是检测越冬和非滞育幼虫的过冷却点作为其抗寒性的指标，并评估幼虫在-5~-25°C的极端低温下暴露24小时后的死亡率。取食幼虫(3~5龄)的平均过冷却点(±SE)为-12.4±1.1°C。不取食期)随结茧天数的增加而减少，结茧1~2日龄幼虫在-15.1±1.2℃之间变化，5日龄以下幼虫在-19.2±1.8℃之间变化。其他非取食期的平均过冷点(±SE)分别为-19.9±1.0℃和-20.2±0.2℃。Pomonella幼虫冬季的平均过冷点显著低于夏季，性别对幼虫的过冷点没有影响。当个体暴露在低于种群平均过冷点的温度下时，幼虫的死亡率显著增加。过冷却点是抗寒性的一个很好的预测因子。
The codling moth, Cydia pomonella L. (Lepidoptera: Tortricidae), a worldwide apple pest, is classified as a freeze-intolerant organism and one of the most cold-tolerant pests. The objectives of this study were to examine the supercooling point of overwintering and non-diapausing larvae of C. pomonella as an index of its cold hardiness, and to assess larval mortality following 24 h exposure to extreme low temperatures ranging from -5 to -25°C. The mean (±SE) supercooling point for feeding larvae (third through fifth instars) was -12.4 ± 1.1°C. The mean supercooling point for cocooned, non-diapausing larvae (i.e., non-feeding stages) decreased as the days that the arvae were cocooned increased and changed between -15.1 ± 1.2°C for one to two day cocooned arvae and -19.2 ± 1.8°C for less than five day cocooned larvae. The mean (±SE) supercooling point for other non-feeding stages containing pupae and overwintering larvae were -19.9 ± 1.0°C and -20.2 ± 0.2°C, respectively. Mean supercooling points of C. pomonella larvae were significantly lower during the winter months than the summer months, and sex had no effect on the supercooling point of C. pomonella larvae. The mortality of larvae increased significantly after individuals were exposed to temperatures below the mean supercooling point of the population. The supercooling point was a good predictor of cold hardiness.
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影响因子：
1.3
作者：
Khani, Abbas;Moharramipour, Saeid;Barzegar, Mohsen
通讯作者：
Barzegar, Mohsen
影响因子：
2.2
作者：
Cory, EN;Sanders, PD
通讯作者：
Sanders, PD
影响因子：
2.2
作者：
Newcomer, EJ
通讯作者：
Newcomer, EJ
影响因子：
2.1
作者：
Needham, GR;Jaworski, DC;Lee, RE
通讯作者：
Lee, RE
影响因子：
2.2
作者：
Newcomer, EJ
通讯作者：
Newcomer, EJ