【摘要】 温度被认为是变温动物表型可塑性最重要的调节因子之一。为探明大猿叶虫生活史对温度变化的反应,在16,19,22,24,26,28℃的恒温,光周期L16:D8下,测量了卵孵化到化蛹和成虫的羽化时间,蛹和成虫的体质量。结果表明,幼虫和蛹的发育历期随饲养温度的升高显著缩短,生长速率与温度呈显著正相关。幼虫和蛹的发育历期在性别间没有显著差异。体质量和饲养温度的关系没有遵循温度-体积法则,雄虫和雌虫均在19℃下获得了最大体质量。然而,在19～28℃的温度范围体质量和饲养温度的关系遵循温度-体积法则。在所有的温度下,雌虫显著大于雄虫,显示了雌性偏向的性体型二型性(SSD)。体质量随温度升高趋于减轻,而SSD指数随温度的升高趋于增大,支持了Rensch法则。成虫的SSD指数高于蛹,原因是在羽化过程中雄虫比雌虫丢失了更大的质量。更多还原

【Abstract】 Temperature is considered one of the most important mediators of phenotypic plasticity in ectotherms.This study aims to understand life-history responses of Colaphellus bowringi to temperature changes.In the present study,development time from hatching to pupation and adult eclosion,pupal and adult weight were examined at 16,19,22,24,26,28 ℃ under L16:D8.The results showed that larval and pupal times were significantly decreased with increasing rearing temperatures,and the growth rate was positively correlated with temperatures.There were no significant differences in larval and pupal developmental time between sexes.The relationship between body size and rearing temperatures did not follow the temperature-size rule? both males and females reached the highest body weight at 19 ℃.However,the relationship between body size and rearing temperatures followed the temperature-size rule between the 19 ℃ and 28 ℃.Females were significantly larger than males at all temperatures,showing a female biased sex size dimorphism(SSD).Body weight tended to decrease with increasing temperatures,whereas SSD tended to increase with increasing temperatures? thus,Rensch’s rule was upheld.SSD was higher in adults than that in pupae,because males lost significantly more weight than females during eclosion.更多还原