云南不同地点及海拔异色瓢虫鞘翅色斑变异比较

Variation in elytral color with Harmonia axyridis(Pallas) for different sites and altitudes in Yunnan Province

2006年5月至2007年3月,分别在云南香格里拉、东川、元江和昆明进行野外标本采集,对4个地点的异色瓢虫Harmonia axyridis(Pallas)色斑变异进行了研究。结果显示,4个地点的异色瓢虫体色多以黄色为基本色调,鞘翅变化可分为黑底和黄底两大系列,共有43种色斑变异型。香格里拉、东川和昆明等3个地点黑底系色斑变异个体数量小于黄底系个体数量,而在元江则是黑底系个体数量占优势。在不同海拔地带中,异色瓢虫色斑变异出现个体数量最高是中海拔地带。异色瓢虫色斑变异是对生活环境的一种积极适应。

Adult individuals of Coccinellidae show variation in elytral color patterns, including Harmonia axyridis （Pallas）. In order to determine the role of site and altitude in the elytral color polymorphism, specimens were collected using routing design method in Shangri-La（1 800 m）, Dongchuan（770 - 2 600 m）, Yuanjiang（625 - 2 160 m）, and Kunming（1 900 m） of Yunnan Province from May 2006 to March 2007, and variation in elytral color of H. axyridis was studied. Results showed that after elytra color was divided into black and yellow series with 43 variance patterns, most H. axyridis were in the yellow series. In Shangri-La, Dongchuan, and Kunming the black series totaled less than the yellow, but the black series dominated in Yuanjiang. In the middle altitude belt （1 200 - 2 000 m） the splash variance of H. axyridis was greatest. The elytra color variance of H. axyridis is an active adaptation to the environment. [Ch, 3 fig. 2 tab. 12 ref. ]