The permeability of the crop surroundings to pests and the landscape structure can influence pest dispersal between crop patches as well as its abundance within the crop. In this work, we analyzed the dispersal of the olive moth Prays oleae (Bernard) throughout the olive grove surroundings and their abundance within the crop following three approaches: (i) pollen grains settled on bodies of olive moths collected in olive groves were identified and compared with flora occurring on the surrounding patches; (ii) the capability of P. oleae males to penetrate non-crop patches was analyzed (iii) the effect of the landscape structure on the abundance of the three generations of the olive moth was studied. Pollen grains of scrubs and other trees occurring in the crop surroundings, such as Cistus sp., Quercus sp., Juniperus-type or Pinaceae were identified on P. oleae bodies suggesting that P. oleae penetrates into non-crop habitats. Additionally, woody and, to a lesser degree, herbaceous patches, did not constitute barriers for P. oleae. Finally, more complex and heterogeneous patches presented lower numbers of captures of P. oleae. These results give new insights into the movements of the olive moth in the olive grove surroundings and suggest that the management of non-crop areas could influence this pest abundance.

中文翻译：

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非作物区和景观结构会影响雄性橄榄蛾的扩散和种群密度吗？

作物周围环境对害虫的渗透性和景观结构会影响害虫在作物斑块之间的传播及其在作物内的丰度。在这项工作中，我们分析了橄榄蛾的传播祈祷油菜（Bernard）在整个橄榄园周围及其在作物中的丰度采用以下三种方法：(ii) 能力油橄榄(iii) 研究了景观结构对三代橄榄蛾丰度的影响。出现在作物周围的灌木和其他树木的花粉粒，例如岩蔷薇sp.,栎属sp.,杜松型或松科在油橄榄机构建议油橄榄渗透到非作物栖息地。此外，木质和较小程度的草本斑块并不构成对油橄榄。最后，更复杂和异构的补丁呈现出更少的捕获数量油橄榄. 这些结果为橄榄树林环境中橄榄蛾的运动提供了新的见解，并表明非作物区的管理可能会影响这种害虫的丰度。