Karban Richard
Department of Entomology, University of California, 95616, Davis, CA, USA.
Oecologia. 1983 Sep;59(2-3):226-231. doi: 10.1007/BF00378841.
Cherry trees (Prunus serotina) responded to oviposition by periodical cicadas (Magicicada spp.) by depositing gum at the egg nest. The proportion of cicada eggs that hatched successfully was significantly reduced at egg nests with visible gum compared to non-gummed egg nests. The number of egg nests with gum increased in proportion to the total number of egg nests on a tree. The probability of an egg nest having visible gum increased as the total number of egg nests increased. Mortality at hatching due to gum deposition increased as a direct density-dependent function of the number of cicada eggs laid in the tree. Although statistically significant, this relationship was weak and appeared to hold only at densities above 100 egg nests per tree.Gum deposition is discussed as an induced plant response to cicada attack. A cherry may reduce the number of cicada nymphs that will parasitize it up to the next oviposition period (17 or 13 years later) by reducing cicada hatching through gum deposition at the site of oviposition.
樱桃树（黑樱桃）会对周期性蝉（魔蝉属）的产卵行为做出反应，在卵窝处分泌树胶。与未分泌树胶的卵窝相比，有可见树胶的卵窝中成功孵化的蝉卵比例显著降低。有树胶的卵窝数量占树上卵窝总数的比例增加。随着卵窝总数的增加，卵窝有可见树胶的概率也增加。因分泌树胶导致的孵化死亡率随着树上所产蝉卵数量的直接密度依赖函数而增加。尽管这种关系具有统计学意义，但很微弱，似乎仅在每棵树有超过100个卵窝的密度下才成立。分泌树胶被认为是植物对蝉攻击的一种诱导反应。樱桃树可能通过在产卵部位分泌树胶减少蝉的孵化，从而减少直到下一个产卵期（17年或13年后）寄生其上的蝉若虫数量。
