期刊
ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
卷 26, 期 3, 页码 203-210出版社
ELSEVIER
DOI: 10.1016/j.actao.2004.05.004
关键词
chemical defences; food quality; larval survival; nitrogen content; phenols; plant-herbivore interaction; tannins; terpenes
类别
This study analyses the consequences of previous defoliation on the Survival of the larvae of the pine processionary moth Thaumetopoea pityocampa (Denis and Schiffermuller) feeding oil relict Scots pine Pinus sylvestris (L.) ssp. nevadensis Christ in the Sierra Nevada mountains (SE Spain). Egg batches of the pine processionary moth were placed on four groups of Scots pines that underwent different periods of herbivory. The larval survival was related to the nitrogen content, fibre, phenolics and terpenes in the needles. Larval survival was higher in undefoliated pines, lower in pines defoliated two consecutive years, and intermediate in pines defoliated only one year, suggesting a direct relationship between previous defoliation and larval survival. In contrast, none of the characteristics of the needles showed a clear relationship with larval survival. The resulting reduction in larval number also affects the capacity of the larvae to develop during winter, because it hampered nest warming. Thus, previous defoliation limits, although it does not impede, the possibility of repeated defoliation on Scots pine. (C) 2004 Elsevier SAS. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据