松褐天牛成虫补充营养特性研究

Studies on Maturation Feeding Habit of Monochamus alternatus Aducts

１９９７～１９９８年在浙江省杭州市和岱山县进行的松褐天牛成虫补充营养特性研究表明：松褐天牛成虫主 要取食 １年生树枝。室内测定雌成虫取食 １年生树枝面积占总面积的３６．５８％，雄成虫占３８．９９％；林间测定占 ２６．３４％。成虫羽化后２０天以内的取食量最大。伐倒松材线虫病致枯萎的松树，统计天牛取食痕和取食面积在树 冠上的分布显示：松褐天牛更多选择树冠下部１年生的树枝取食，取食痕和取食面积分别占５０．４２％和５１．０６％。

Observation was done on Monochamus alternatus adults in Hangzhou city and Daishan county of Zhejiang province during 1997-1998. It indicated: the muturation feeding of monochamus alternatus adults was mainly on one-year-old twigs. The feeding area of female adult amount to 36.5% of the twig surface, male amout to 38.99% in lab. The area of feeding scar and it's distribution on the crown of the fallen pine, tree which has been wilted, caused by Bursaphelenchus xylophlus indicated: most adult fed on the one-year-old twig under the crown, the rate of feeding scar and area are 50.42% and 51 .06% respectively.