《环境昆虫学报》

作者	单位
韩冬银，邢楚明，李磊，张方平，陈俊谕，王建赟，符悦冠	中国热带农业科学院环境与植物保护研究所/农业农村部热带作物有害生物综合治理重点实验室/海南省热带农业有害生物监测与控制重点实验室，海口 571101

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中文摘要:

蓟马是芒果的重要害虫，为探明短时低温对蓟马发育与繁殖的影响，以为害芒果的蓟马优势种茶黄蓟马Scirtothrips dorsalis为对象，将其放置于8℃和12℃（RH 75%±10%, 12 L∶12 D）人工气候箱内，分别处理6 h、12 h及24 h，观察若虫的存活率、发育历期及成虫寿命和繁殖力。结果表明：短时低温暴露对茶黄蓟马若虫的发育历期有一定的影响，不同龄期对低温的响应有所不同，若虫期经历短时低温会显著降低成虫寿命；短时低温暴露对所处理龄期及世代的存活能力均造成显著影响，处理温度越低时间越长，存活率下降越显著，其中2龄若虫在8℃下处理24 h，若虫期的累计存活率最低，仅6.86%。结果说明短时低温暴露后对成虫寿命和产卵量均产生不利的影响，处理温度越低时间越长，影响越大。

英文摘要:

Thrips are important insect pests in mango orchards. In order to investigate the effect of short-term low temperature on the development and reproduction of thrips, the dominant species Scirtothrips dorsalis Hood was selected to expose to 8℃ and 12℃ (RH 75%±10%, 12 L∶12 D) for 6 h, 12 h and 24 h, respectively. The survival and developmental duration of S. dorsalis larvaes, the lifespan and fecundity of S.dorsalis adults were observed. The results showed that short-term low temperature significantly affected the developmental duration of S. dorsalis nymphs and different instar S.dorsalis had different responses. The nynphs exposed to short-term low temperatures significantly reduced the lifespans their adults. The short-term low temperatures also influenced the generation survival. The survival rates significantly decreased with the increase of the exposure time of low temperature. The second instar nymph exposed to 8℃ for 24 h resulted in the lowest cumulative survival rate in the whole nymph stage, which was 6.86%. The exposure of short-term temperature was adverse to the lifespan and fecundity of S.dorsalis adults. The results indicated that the longer the exposure of short-term low temperature, the greater the influence.

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