Lindroth R L, Reich P B, Tjoelker M G, Volin J C, Oleksyn J
Department of Entomology and Environmental Toxicology Center, University of Wisconsin, Madison, WI 53706-1598 USA.
Department of Forestry, University of Wisconsin-Madison, 1630 Linden Drive, Madison WI 53706, USA.
New Phytol. 1993 Aug;124(4):647-651. doi: 10.1111/j.1469-8137.1993.tb03854.x.
Both light conditions and ozone fumigation alter the chemical composition of tree foliage and are thus likely to influence tree-insect interactions. We investigated the direct and interactive effects of light environment and ozone exposure on the performance of gypsy moth (Lymantria dispar L.) larvae reared on hybrid poplar (Populus tristis Fisch. ×P. balsamifera L. cv. Tristis) and sugar maple (Acer saccharum Marsh). We used a split-plot experimental design (light nested within ozone) and fourth-instar bioassays to calculate standard indices of insect growth and feeding performance. For insects fed poplar, consumption, growth and processing efficiencies were affected more by light environment than by ozone. Larvae ate and grew less on high-light foliage, responses attributable to higher levels of phenolic glycosides in those leaves. For insects fed maple, no significant effects of light, ozone, or light x ozone were observed. These results demonstrate that light environment and ozone pollution can alter the dynamics of interactions between trees and associated insects and that responses are species-specific.
光照条件和臭氧熏蒸都会改变树叶的化学成分，因此可能会影响树木与昆虫之间的相互作用。我们研究了光照环境和臭氧暴露对以杂交杨树（Populus tristis Fisch. ×P. balsamifera L. cv. Tristis）和糖枫（Acer saccharum Marsh）为食的舞毒蛾（Lymantria dispar L.）幼虫生长性能的直接和交互作用。我们采用裂区实验设计（光照嵌套在臭氧处理中）和四龄幼虫生物测定法来计算昆虫生长和取食性能的标准指标。对于取食杨树的昆虫，取食量、生长量和消化效率受光照环境的影响大于臭氧。幼虫在高光树叶上的取食和生长较少，这些反应归因于这些树叶中较高水平的酚糖苷。对于取食枫树的昆虫，未观察到光照、臭氧或光照×臭氧的显著影响。这些结果表明，光照环境和臭氧污染可以改变树木与相关昆虫之间相互作用的动态，并且反应具有物种特异性。
