白背飞虱成虫不同翅型的形态测量学比较

Comparison on Morphometry of White-backed Planthopper Adults with Different Wing Types

[目的]了解水稻重要害虫白背飞虱成虫长翅型个体和短翅型个体在形态测量学方面的具体差异。[方法]利用Nikon体视显微镜操作系统(nikon digital sight DS-QilMC)对白背飞虱长、短翅型成虫前翅和后翅进行详细观察和测量。[结果]短翅型雌虫的后翅与前翅的比率为0.29±0.03,与长翅型雌、雄成虫相应的比值(分别为0.83±0.01、0.84±0.02)差异显著;长翅型雌虫前翅与短翅型雌虫前翅的比率为2.11±0.04,后翅的比率为6.21±0.05,两者差异达显著水平。此外,还发现短翅型白背飞虱雌成虫前翅中的横脉至翅尾长度与前翅长度的比值只有0.231+0.024,明显小于白背飞虱长翅型雄成虫和长翅型雌成虫的比值(0.387+0.012、0.388+0.012),差异达显著水平。[结论]短翅型雌成虫的前、后翅并未按同等比例缩小,且短翅型雌成虫前翅中的横脉更靠近翅尾。该研究结果将有助于进一步了解稻飞虱翅二型现象的本质。

[Objective]To understand the morphometric differences between long-winged and short-winged adults of white back planthopper.[Method]Nikon digital sight DS-QilMC was used for the detailed observation and measurement of the forewings and hingwings of the long and short-winged adults of the white back planthopper.[Result]It was found that the ratio of hindwings to forewings of short-winged females was 0.29±0.03,which was significantly different from that of long-winged females and males(0.83±0.01,0.84±0.02,respectively).The ratio of forewings of long-winged females to short-winged females was 2.11±0.04,while the ratio of hindwings was 6.21±0.05,which reached a significant level.In addition,the ratio of transverse veins-wing tail length to forewing length of female short-winged planthopper was only 0.231+0.024,significantly lower than that of male long-winged planthopper and female long-winged planthopper(0.387+0.012,0.388+0.012,respectively),and the difference reached a significant level.[Conclusion]The forewings and hindwings of the short-winged female adult were not reduced in the same proportion,and the transverse veins of the forewings of the short-winged female adult were closer to the wing tail.These results will help to understand the nature of the dimorphism of rice planthopper wings further.