【摘要】 为研究中华稻蝗形态特征与地理特征的关系,选取中华稻蝗体长(LB)、头长(LH)、前胸背板长(LP)、前胸背板宽(WP)、前胸背板侧片长(LLP)、前胸背板侧片高(HLP)、前翅长(LEL)、后足股节长(LF)、后足股节宽(WF)和后足胫节长(LT)等10个性状,采用电子游标卡尺测量其长度进行比较,使用SPSS11.5统计软件进行体长方差分析、各个性状在不同种群间的多重方差分析以及各性状间与海拔高度间的相关性分析。结果显示:9个中华稻蝗种群分为南方组、北方组及一个过渡种群,雌雄虫中北方种群的体长均明显小于南方种群;各性状测量值呈现出随纬度增加而减少的趋势;10个性状中除前胸背板长、前翅长、后足股节长和后足胫节长与海拔高度之间的相关性不显著之外,其余性状均与海拔高度呈现显著的正相关。结果表明,秦岭的分隔是造成南北方种群形态特征产生差异的主要原因;体型较大、后腿股节较宽的中华稻蝗更有利于在高海拔环境生存。更多还原

【Abstract】 In order to elucidate the co-relationship between morphological characters of Oxya chenesis and geographical features,length of body,length of head,length of pronotum,width of pronotum,length of lateral lobe of pronotum,height of lateral lobe of pronotum,length of elytra,length of femur,width of femur and length of tibia were measured and compared among 9 O. chenesis populations across China. ANOVA analysis on length of body and multiple analysis of variance of characters on different populations were analyzed by using SPSS 11.5 software. The correlation between measurement indices and altitude was also conducted by using the same software. Our results showed that 9 populations were separated to three groups:north group,south group,and a transitional population. The body length of north populations was significant smaller than the south and every measurement index decreased along with the increase of latitude. Ten measurement indices were correlated with altitude except length of pronotum,length of elytra,length of femur and length of tibia. Based on the above results,we proposed that (ⅰ) Qinling Mountain was the major reason for significant differentiation of morphological characters between north and south groups and (ⅱ) the O. chinesis with large body and wide femur were benefit for survival in the high elevation area.更多还原