《环境昆虫学报》

为探明棉铃虫Helicoverpa armigera Hübner 不同地理种群发育历期及其地理变异，通过对棉铃虫不同地理种群在不同温度和光周期下幼虫和蛹发育历期的研究，本论文系统比较了来自中国的4 个地理种群，广东广州 ( 23. 08°N，113. 14°E) 、江西永修( 29. 04°N，115. 82°E) 、山东泰安( 36. 15°N，116. 59°E) 、辽宁喀佐( 41. 34°N， 120. 27°E) 在20℃、22℃、25℃和28℃恒温下的幼虫、非滞育蛹和滞育蛹发育历期及其与栖息地纬度的关系。结果表明，棉铃虫幼虫发育历期随栖息地纬度的升高而缩短，在25℃下，与地理纬度存在明显的负相关关系，其它温度下呈不显著的负相关关系，雌雄幼虫发育历期相似，差异不显著; 在20℃下，蛹历期( 包括滞育蛹和非滞育蛹) 与栖息地纬度呈显著负相关，其它温度下的蛹历期与栖息地纬度呈正相关，雄蛹历期均要略长于雌蛹历期，但差异不显著。棉铃虫幼虫和蛹发育历期随着纬度的变化呈现一种渐变的趋势，存在地理变异; 北方种群的幼虫发育历期较南方种群的短; 适温( 22℃ － 28℃) 范围内，北方种群的非滞育蛹发育历期比南方种群的更长些; 不同地理种群间滞育蛹的历期亦存在较大的差别。这些结果进一步揭示了即使在同一种类昆虫中，不同实验条件，其各个虫态发育历期的地理变异也可能不同。

英文摘要:

To understand the geographic variation in developmental duration of different populations of the cotton bollworm，Helicoverpa armigera Hübner，studies on the developmental duration of larvae and pupa in different geographical populations of H. armigera were conducted． In different temperature and light cycle，we systematically investigated the developmental duration of larvae，non-diapaused pupae and diapaused pupae of H. armigera from 4 different geographic populations ( Guangzhou population，23.08°N，113.14°E; Yongxiu population，29.04°N，115.82°E; Taian population，36.15°N，116.59°E; Kazuo population，41.34°N，120.27°E) under 20℃，22℃，25℃ and 28℃ constant temperature. The relationship betweentheir developmental duration and latitude was analyzed. The results showed that the developmental durationof larvae increased with increasing geographical latitude． Larval duration is significantly negatively correlated with latitude at 25℃， but at the other constant temperature， the larval duration is not significantly negatively correlated with latitude，and the development duration of female and male larvae is similar，there is no significant difference. At 20℃，there is significant negative correlation between pupal duration and latitude，but at the other constant temperature，there is positive correlation，and male pupal duration is slightly longer than female pupal duration， but the difference is not significant. The developmental duration of larvae and pupa of H. armigera showed a gradual trend as the change of latitude， and there is a geographical variation. The developmental duration of larvae of the northern populations is shorter than that of the southern populations. In suitable temperature range ( 22℃ － 28 ℃) ，the developmental duration of the non-diapaused pupa of the northern population is longer than that of the southern population. There is also a big difference among different geographical populations with the developmental duration of the diapaused pupa. These results further suggest that the geographic variation in developmental duration may be different in different stage and different experiment conditions in the same specie of insects．

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