The effect of heat stress on the survival of the rose grain aphid, Metopolophium dirhodum (Hemiptera : Aphididae)
文献类型: 外文期刊
第一作者: Ma, CS
作者: Ma, CS;Hau, B;Poehling, HM
作者机构:
关键词: Metopolophium dirhodum;High temperature;Survival;Dropping off;Temperature;Abundance;Homoptera
期刊名称:EUROPEAN JOURNAL OF ENTOMOLOGY ( 影响因子:1.225; 五年影响因子:1.548 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: The rose grain aphid, Metopolophium dirhodum (Walker) (Hemiptera: Aphididae) is one of the three most important cereal aphid species in Europe. High temperature is detrimental for the survival of this species. Detailed experiments were conducted on the effect of high temperature (27, 28, 29, 30, 31, 31.5, 32.5, 33 and 34degreesC), period of exposure (2, 3, 4, 6 and 8 h per day for 1, 2, 4, 6 days) and developmental stage (2nd, 3rd, 4th instar nymph and adult) on the survival of the aphid. The results show that all three factors significantly affect survival. Temperatures over 29degreesC for 8 h significantly reduced survival, which decreased generally as the temperature increased. The survival was inversely related to the period of exposure. Exposing aphids to 32.5degreesC for 4 h or longer significantly reduced survival. Mature aphids had a lower tolerance of high temperatures than nymphs. Periods of high temperature experienced by 4th instar and adult aphids can greatly affect their survival. The value of these results for forecasting and determining control thresholds, the effect of global warming on cereal aphid abundance and the dropping off behaviour of the aphids are discussed.
分类号: Q96
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