Is the expansion of the pine processionary moth, due to global warming, impacting the endangered Spanish moon moth through an induced change in food quality?

被引:6
作者
Imbert, Charles-Edouard [1 ]
Goussard, Francis [1 ]
Roques, Alain [1 ]
机构
[1] INRA, Zool Forestiere UR633, F-45075 Orleans 2, France
来源
INTEGRATIVE ZOOLOGY | 2012年 / 7卷 / 02期
关键词
Actias isabellae; climate change; competition; conservation; expansion; Pinus; Thaumetopoea pityocampa; CATERPILLAR THAUMETOPOEA-PITYOCAMPA; HIGH-MORTALITY; SLOW-GROWTH; PREVIOUS DEFOLIATION; NUTRITIONAL QUALITY; BIOLOGICAL-CONTROL; CLIMATE-CHANGE; SURVIVAL; PERFORMANCE; DIPRIONIDAE;
D O I
10.1111/j.1749-4877.2012.00289.x
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Recent climate change is known to affect the distribution of a number of insect species, resulting in a modification of their range boundaries. In newly colonized areas, novel interactions become apparent between expanding and endemic species sharing the same host. The pine processionary moth is a highly damaging pine defoliator, extending its range northwards and upwards in response to winter warming. Its expansion in the Alps has resulted in an invasion into the range of the Spanish moon moth, a red listed species developing on Scots pine. Pine processionary moth larvae develop during winter, preceding those of the moon moth, which hatch in late spring. Using pine trees planted in a clonal design, we experimentally tested the effect of previous winter defoliation by pine processionary moth larvae upon the survival and development of moon moth larvae. Feeding on foliage of heavily defoliated trees (>50%) resulted in a significant increase in the development time of moon moth larvae and a decrease in relative growth rate compared to feeding on foliage of undefoliated trees. Dry weight of pupae also decreased when larvae were fed with foliage of defoliated trees, and might, therefore, affect imago performances. However, lower defoliation degrees did not result in significant differences in larval performances compared to the control. Because a high degree of defoliation by pine processionary moth is to be expected during the colonization phase, its arrival in subalpine pine stands might affect the populations of the endangered moon moth
引用
收藏
页码:147 / 157
页数:11
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