锈色粒肩天牛与寄主树种关系的初步研究  

THE RELATIONSHIPS BETWEEN APRIONA SWAINSONI AND ITS HOST TREES

作　　者：刘桂华[1] 唐燕平[1] 

机构地区：[1]安徽农业大学林学系,合肥230036

出　　处：《林业科学》2002年第3期106-113,共8页Scientia Silvae Sinicae

基　　金：安徽省重点课题"森林检疫性病虫害监控系统的研究"的一部分。

摘　　要：在连续 3a的定位观测和分析基础上 ,本文初步报道了锈色粒肩天牛与文献报道中的几种寄主树种之间的关系。结果如下 :(1)根据室内饲养下成虫对不同树种的取食及产卵情况和在不同树种上接种 (卵 )的幼虫情况 ,可将几种寄主树种分为 4类 :高感树种 (国槐 )、低感树种 (云实、黄檀 )、抗虫树种 (刺槐 )、免疫树种 (旱柳 ) ;(2 )酚酸类物质在旱柳中的含量 (3 0 3～ 9 73mg·(10 0g) - 1 ) ,显著高于其它树种中的含量 (1 71～5 39mg·(10 0g) - 1 ) ,可能是锈色粒肩天牛在旱柳上表现拒食、拒产卵、拒钻蛀的重要原因。氨基酸含量较高、组分相对最全 (17种 ) ,以及较高的C N值 ,是国槐基本营养物质的显著特征 ,这可能是锈色粒肩天牛嗜食国槐 ,对其造成严重危害的根本原因。锈色粒肩天牛很少取食危害刺槐 ,这与刺槐树种的各部分C N值过低 ,造成营养失调有关。黄檀木材纤维平均长度为 0 837mm ,平均宽度为 18 90 μm ,长宽比为 5 0 96 ,其韧性是参试树种中最大的 ,因而可能造成幼虫啃食困难 ,加上木材中的C N低 (0 36 ) ,因此 ,具有较强的抗虫性。云实树皮薄而光滑 ,造成成虫产卵困难 ,因此 ,在自然状态下 ,锈色粒肩天牛不易对其产生危害。Based on the results of observations and analyses for successive three years ,the relationships between Apriona swainsoni and its host trees were reported in this paper. The results were as follows:(1) According to the feeding and oviposting behaviour ,the survival time of the adult and the inoculating egg situation on different trees , the host trees reported in other papers could be divided into four types—highly sensitive tree ( Sophora japonica ); lowly sensitive tree (including Dalbergia hupehana,Caesalpinia decapetala );resistant tree ( Robinia pseudoacacia )and immune tree ( Salix matsudana ). (2) Phenotic compound content in S.matudana (3 03～9 73?mg·(100g) -1 )was much higher than that in other host trees,which may be the reason why A swainsoni refused to eat, ovipsit and bore on this tree .The higher content of amino acid with the most types and higher C/N ratio was notable characteristic of nutrient material in S.japonica . Maybe this nutrient characteristic offers many attractions for A swainsoni . On the contrary, perhaps the lowest C/N ratio of R.pseudoacacia results in slight harm to it .The wood of D.hupehana with 0.837?mm in average fibre length,18.90?μm in average fibre width and 50 96 in the ratio of length to width,indicated that its tenacity and bending strength were the highest in that of all experiment host trees. In addition, the C/N ratio in the wood of this tree was also lower (0 36).These factors might make it difficult for the larvae to nibble and live on it . C.decapetala has thin and smooth trunk bark ,so it is hard for the adult to oviposit on this type of tree.

关 键 词：锈色粒肩天牛 寄主树种 关系 抗虫性 木材纤维 内含物 

分 类 号：S763.38[农业科学—森林保护学]