[Objective] The paper was to understand the harms of Actias selene ningpoana Felder to plants. [Method] The larvae were cultured in five different groups: camphor tree, cherry tree, crape myrtle tree, poplar and willo...[Objective] The paper was to understand the harms of Actias selene ningpoana Felder to plants. [Method] The larvae were cultured in five different groups: camphor tree, cherry tree, crape myrtle tree, poplar and willow, to observe the growth status of larvae. [Result] The survival rates of A. selene ningpoana in cherry tree and crape myrtle tree group were higher. The larvae in cherry tree group had faster growth, and the adults were large. [Conclusion] A. selene ningpoana is most harmful to cherry trees, which should be paid special attention in cherry garden.展开更多
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 e...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 .展开更多
文摘[Objective] The paper was to understand the harms of Actias selene ningpoana Felder to plants. [Method] The larvae were cultured in five different groups: camphor tree, cherry tree, crape myrtle tree, poplar and willow, to observe the growth status of larvae. [Result] The survival rates of A. selene ningpoana in cherry tree and crape myrtle tree group were higher. The larvae in cherry tree group had faster growth, and the adults were large. [Conclusion] A. selene ningpoana is most harmful to cherry trees, which should be paid special attention in cherry garden.
基金support from the URTICLIM project Anticipation des effets du changement climatique sur l’impactécologique et sanitaire d’insectes forestiers urticants of the French Agence Nationale de la Recherche(ANR-07-BDIV-013).
文摘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 .
