西昌市大箐梁子华山松球蚜生物生态学特性研究

A Study of the Biological Characteristics of Pineus armandicola in Daqingliangzi of Xichang City

为了研究华山松球蚜(Pineus armandicola)的生物学特性以及预测预报规律,本研究采用室内饲养与林间观察相结合的办法,记录了华山松球蚜形态特征、生活史及种群变化特征,比较了20℃、25℃、30℃和35℃4个不同温度下各虫态的发育历期。结果表明:华山松球蚜在大箐梁子1年11代,春夏季平均30 d 1代,秋冬季35 d 1代,世代重叠。在35℃处理下,各虫态的发育历期显著低于其他3个温度(P<0.05);而夏季(6—8月),卵、若虫和无翅成蚜3个虫态的数量显著高于其他3个季节(P<0.05)。华山松球蚜产卵期与毛叶蔷薇(Rosa mairei)、桤木(Alnus cremastogyne)、荞麦(Fagopyrum esculentum)物候之间关系密切。

To study the biological characteristics of Pineus armandicola,and to improve forecast technology,the morphological characteristics and life history and population changes of P.armandiola were recorded by combining indoor feeding with observation in forests,and the developmental periods were compared for different insect states at 20℃、25℃、30℃and 35℃.The results showed that P.armandicola bred eleven generations in one year in Daqingliangzi area.On average,it would spend thirty days per generation in spring and summer,and thirty-five days per generation in autumn and winter,with overlapping generations.At 35℃,the developmental period of each insect state was significantly lower than that at the other 3 temperatures(P<0.05);In summer(from June to August),the number of eggs,nymphs,and wingless aphids was significantly higher than those in the other three seasons(P<0.05).The spawning period of P.armandicola was closely related to the phenologies of Rosa mairei,Alnus cremastogyne and Fagopyrum esculentum.