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温度对桔小实蝇种群发育的影响

罗智心1;任荔荔1;祁力言2;周曙东3;戴华国1   

  1. 1南京农业大学植物保护学院农业部作物病虫害监测与防控重点开放实验室,南京 210095;2无锡市农林局,江苏无锡 214023;3南京农业大学经济管理学院, 南京 210095
  • 收稿日期:2008-09-12 修回日期:1900-01-01 出版日期:2009-05-10 发布日期:2009-05-10

Effects of temperature on the development of Bactrocera dorsalis (Diptera: Tephritidae) population.

LUO Zhi-xin1;REN Li-li1;QI Li-yan2;ZHOU Shu-dong3;DAI Hua-guo1   

  1. 1Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China;2Wuxi Agricultural and Forestry Bureau, Wuxi 214023, Jiangsu, China;3College of Economics and Management, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2008-09-12 Revised:1900-01-01 Online:2009-05-10 Published:2009-05-10

摘要: 采用室内人工饲养,研究了温度对外来入侵无锡地区的桔小实蝇(Bactrocera dorsalis)发育的影响。结果表明:17℃~33℃桔小实蝇各虫态发育速率逐渐增加;通过直线回归模型与直接最优法,得出桔小实蝇从卵期到成虫期的发育起点温度为9.9 ℃,卵、幼虫和蛹发育所需温度分别为10.5 ℃、9.6 ℃和10.3 ℃;卵期发育到成虫期的有效积温为381.0 d·℃,卵期、幼虫期和蛹期分别为24.1、178.6和176.7 d·℃。此外,温度影响桔小实蝇各虫态的存活率;25 ℃下卵期的存活率最高,而17 ℃下蛹期的存活率最低。温度对桔小实蝇雌雄性比也有一定影响,以25 ℃下雌虫比率最高。

关键词: 水分限制, 作物生长模拟模型, 区域尺度, 遥感信息

Abstract: By the method of artificial breeding in laboratory, this paper studied the effects of temperature on the development of invasive alien species Bactrocera dorsalis in Wuxi of Jiangsu, China. The results indicated that the development rate of B. dorsalis at its each development stage increased from 17 ℃ to 33 ℃. By using linear regression model and direct optimal method, the development threshold temperature (DTT) was determined, which was 99 ℃ for the developmental period from egg to adult, and was 105 ℃, 96 ℃, and 103 ℃ for the egg, larva, and pupa stages, respectively. The effective accumulation temperature (EAT) was 3810 day-degree for the developmental period from egg to adult, and was 241, 1786, and 1767 day-degree for egg, larva, and pupa stages, respectively. Temperature also affected the survival rate of B. dorsalis at its each developmental stage. The survival rate for egg stage was the highest at 25 ℃, and that for pupa stage was the lowest at 17 ℃. In addition, temperature had definite effects on the sex ratio of B. dorsalis. At 25 ℃, the proportion of the females was the highest.

Key words: Water stress, Crop growth simulation model, Regional scale, Remote sensing information