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在温度为25-28℃的养虫室内选择具有代表性的菊科植物及豆科、禾本科牧草共10科30种植物对欧洲方喙象进行寄主专一性测定试验,结果表明其食性专一,只取食加拿大蓟,个别成虫或幼虫在饥饿状态下仅少量取食菊科其他植物,但随后即拒绝取食。非选择性试验(饥饿试验)表明欧洲方喙象耐饥饿能力强,不同龄期平均达28d。欧洲方喙象最适宜的生长温度是25℃,高于30℃或低于10℃,生长发育则受到抑制。
A representative test of Compositae, Leguminosae and Gramineae was conducted at a temperature of 25-28 ℃ in a host-specific test of 30 species of 10 families of 10 European beaks. The results showed that their feeding habits First, feeding only Canadian thistle, individual adult or larvae in starvation only a small amount of Asteraceae other plants, but then refused to take food. Non-selectivity test (starvation test) showed that European beaks are more resistant to hunger and averaged 28 days in different age groups. European beak as the most appropriate growth temperature is 25 ℃, above 30 ℃ or below 10 ℃, growth and development are inhibited.