昆虫学报2011，Vol.54Issue(11)：1288-1296,9.
温周期对不同地理种群棉铃虫幼虫发育及蛹滞育的影响
Effects of thermoperiod on larval development and pupal diapause in different geographic populations of Helicoverpa armigera (Hiibner) ( Lepidoptera: Noctuidae)
摘要
Abstract
To understand the thermoperiodic response of the cotton bollworm, Helicoverpa armigera (Hübner) , the effects of thermoperiod on larval development and pupal diapause in 4 different geographic populations (Guangzhou population, 23.08°N, 113. 14°E; Yongxiu population, 29. 04°N, 115.82°E; Tai'an population, 36. 15°N, 116. 59°E; and Kazuo population, 41.34°N, 120. 27°E) were systematically investigated under the photoperiod of L12: D12. The results showed that at the same photophase temperature there were no significant differences in the larval duration (P > 0. 05 ) between 20T ( thermophase, 20℃) : 5C (cryophase, 5℃) ( 12 h photophase temperature : 12h scotophase temperature) (the rest in the same analogy) and 20T:9C, 22T:5C and 22T:9C, 25T:5C and 25T:9C, and 28T:5C and 28T:9C, respectively, in 4 different populations. However, at the same or near average temperature, the larval duration at 20T:9C (an average temperature of 14. 5℃ ) was significantly higher than that at 22T: 5C (an average temperature of 13. 5℃ ) ( P < 0. 05 ) ; the larval duration at 20T: 20C ( a constant temperature of 20℃ ) was significantly higher than that at 28T= 9C ( an average temperature of 18. 5℃) (P <0. 05) , suggesting that the larval development is influenced strongly by the photophase temperature. At the same or near average temperature, the diapause rates in 4 different populations at 20T: 9C were higher than those at 22T:5C, and the diapause rates at 25T: 20C (an average temperature of 22. 5℃ ) were higher than those at 28 T: 9C (an average temperature of 18. 5℃ ) ; the diapause rates in 4 different populations at 20T:20C were significantly higher than those at 28T:5C (an average temperature of 16. 51 ) ( P < 0.05). However, there were significant differences (P > 0.05 ) at the same photophase temperature between 20T:5C and 20T:9C, 22T:5C and 22T:9C, 25T:5C and 25T:9C, and 28T:5G and 28T:9C, respectively, suggesting that the diapause induction is influenced strongly by the photophase temperature. At the same thermoperiod, the larval duration and diapause rate were significantly different among different geographic populations. The larval duration and diapause rate were positively correlated with latitude of habitat, suggesting that sensitivity to temperature is gradually enhanced with a decrease in latitude of habitat.关键词
棉铃虫/地理种群/发育历期/滞育诱导/温周期/光周期Key words
Helicoverpa armigera/ geographic population/ developmental duration/ diapause induction/ thermoperiod/ photoperiod分类
数理科学引用本文复制引用
陈元生,陈超,涂小云,匡先钜,薛芳森..温周期对不同地理种群棉铃虫幼虫发育及蛹滞育的影响[J].昆虫学报,2011,54(11):1288-1296,9.基金项目
国家自然科学基金项目(31060243) （31060243）
