...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Annales Zoologici Fennici >Reversed impacts by specialist parasitoids and generalist predators may explain a phase lag in moth cycles: a novel hypothesis and preliminary field tests
【24h】

Reversed impacts by specialist parasitoids and generalist predators may explain a phase lag in moth cycles: a novel hypothesis and preliminary field tests

机译：专业寄生虫和通体捕食者的反向影响可能解释了飞蛾周期的相位滞后：一种新颖的假设和初步的田间试验

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Among cyclic populations of herbivores, inter-specific temporal synchrony has been attributed to both climatic factors and trophic interactions. In nor-them Europe, winter and autumnal moths undergo regular 9-11 year population cycles. The winter moth cycle has typically been phase-locked with that of the autumnal moth, but with a 1-3-year phase lag. We examined potential effects of natural enemies on this phase lag using field experiments and observational data. We found that larval parasitism was significantly higher in autumnal than in winter moths. Conversely, pupal predation by generalist invertebrates was clearly greater in winter than in autumnal moths. The difference in parasitism rates may contribute to the earlier collapse of the autumnal moth cycle. In addition, the phase lag may be strengthened by higher pupal mortality in winter moths in the early increase phase of the cycles. As a consequence, we put forward a hypothesis on reversed effects of natural enemies, providing a potential explanation for phase-lagged population cycles of these moth species.
机译：在草食动物的周期性种群中，种间时间同步已被归因于气候因素和营养相互作用。在欧洲北部，冬季和秋季的蛾类会经历9-11年的常规种群周期。冬季蛾的周期通常与秋季蛾的周期锁相，但是有1-3年的相位滞后。我们使用野外实验和观测数据检查了天敌对此阶段滞后的潜在影响。我们发现，幼虫寄生虫在秋季比冬季飞蛾中明显更高。相反，通体无脊椎动物的p捕食在冬天要比秋蛾要大。寄生率的差异可能有助于秋季蛾周期的较早崩溃。另外，在周期的早期增加阶段，冬季蛾的higher死亡率较高，可以加强阶段滞后。因此，我们提出了天敌反向作用的假说，为这些蛾类的相位滞后种群周期提供了可能的解释。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号