中文摘要：

【目的】探明亚洲玉米螟不同地理种群性体型二型性及幼虫发育历期与蛹重的关系。【方法】在26℃,L︰D=16︰8条件下,详细记录了来自热带地区的海南省三亚种群,来自亚热带地区的广东省广州和江西省永修种群,及来自温带地区的河北廊坊种群的雌雄幼虫发育历期、蛹重、成虫重,并计算幼虫发育速率。【结果】不同地理种群的雌性个体均显著大于雄性个体。三亚种群雌雄个体的发育历期没有差异,但雌性的生长速率显著大于雄性个体;广州种群、永修种群及廊坊种群,雌雄的生长速率没有差异,但雌性幼虫的发育历期显著长于雄性幼虫。各地理种群蛹重随幼虫发育历期的延长呈下降趋势。【结论】亚洲玉米螟存在明显的性体型二型性,雌雄个体发育历期和生长速率存在地理差异。

英文摘要：

[Objectives] To explore sexual size dimorphism in the Asian corn borer, Ostrinia furnacalis （Guen6e）, and investigate the relationship between larval time and pupal weights in different geographic populations of this species. [Methods] The duration of the larval period, pupal weight, and adult weights of each sex were recorded in specimens obtained from four different geographic populations under a temperature of 26℃ and a photoperiod of L ： D=16 ： 8. Specimens were obtained from a tropical population from Sanya, Hainan Province, subtropical populations from Guangzhou, Guangdong Province and Yongxiu, Jiangxi Province, and a temperate population from Langfang, Hebei Province. [Results] Females are consistently bigger than males in all four geographic populations. There was no significant difference in the duration of the larval period between females and males in the Sanya population, but female growth rate was significantly higher than that of males. There was no significant difference in the growth rate of females and males in specimens from the Guangzhou, Yongxiu and Langfang populations, but females took more time to complete larval development than males. Furthermore, pupal weight was negatively correlated with the duration of larval development. [Conclusion[ The Asian corn borer has significant sexual size dimorphism and geographic variation in both larval development and female and male growth rates.