Abstract：
The Mediterranean fruit fly (medfly), Ceratitis capitata (Wiedemann), one of the most important invasive pests of fresh fruits and vegetables from the coastal Mediterranean habitats, is expanding its current geographic distribution to cooler more temperate areas of Europe. Every year since 2010 the fly is detected in the area of Vienna, Austria. However, whether it can establish permanent populations is not known. In this current paper, the capacity of C. capitata to overwinter in Vienna, Austria (48.1° northern latitude) was studied over 2 consecutive winter seasons (2020-2022). Overwintering trials with different life stages (larva, pupa, and adult) of C. capitata were performed in the open field and in the protected environment of a basement without a heating system. Control flies were kept under constant conditions in a climate chamber (25 °C, 60% RH, 14:10 L:D). Our data showed that no life stage of the Mediterranean fruit fly was able to survive the Austrian winter in the open field. However, in the protected environment C. capitata outlived the winter months in all studied life stages at least in small numbers and several surviving females were able to lay eggs at the time of the following fruiting season. Implications of these findings for the ongoing geographic range expansion of the pest in temperate European countries are discussed.
摘要：
地中海果蝇（medfly），头皮炎(Wiedemann),来自地中海沿岸栖息地的新鲜水果和蔬菜的最重要的入侵害虫之一，正在将其目前的地理分布扩展到欧洲温度较低的地区。自2010年以来，每年在维也纳地区都会发现这种苍蝇，奥地利。然而,它是否可以建立永久人口尚不清楚。在本文中,C.capitata在维也纳越冬的能力，对奥地利（北纬48.1°）进行了连续两个冬季（2020-2022年）的研究。不同生命阶段的越冬试验(幼虫，蛹,和成年）的C.capitata在露天和没有加热系统的地下室的受保护环境中进行。将对照蝇保持在气候室中的恒定条件下（25°C，60%RH,14:10L:D)。我们的数据表明，地中海果蝇的任何生命阶段都无法在空地上度过奥地利冬季。然而,在受保护的环境中，C.capitata在所有研究的生命阶段中至少在少量的情况下都比冬季更长，并且有几只幸存的雌性能够在接下来的结果季节产卵。讨论了这些发现对欧洲温带国家害虫正在进行的地理范围扩大的影响。
