Report: Sandbuckthorn pest Goldafter on East Frisian Islands (1972)

In the early 1930s, the Goldafter (Euproctis chrysorrhoea L.), coming from the West Frisian Islands, entered the East Frisian Islands. The caterpillars are almost specialised in sea buckthorn as a forage plant. There are often mass occurrences that endanger the sea buckthorn stocks and also affect the bathing operation, as the hairs of the caterpillars cause skin inflammation. Various ways of combating it have been taken: Cutting and burning of the brushes, spraying with insecticides and with Thuricide, a combined chemical-bacteriological preparation. So far, only the islands from Borkum to Baltrum have been affected by the damage, while Langeoog, Spiekeroog and Wangerooge have been spared. It remains to be seen whether the pest will continue its migration to the east.20世纪30年代初，源自西弗里西亚群岛的棕尾毒蛾（Euproctis chrysorrhoea L.）入侵东弗里西亚群岛。该虫幼虫几乎仅以沙棘为食，常出现大规模暴发的情况，不仅会危及沙棘种群，其幼虫的毒毛还可引发皮肤炎症，进而影响当地海滨浴场的运营。目前已采取多种防治手段：砍伐并焚烧沙棘灌丛、喷施杀虫剂，以及使用兼具化学-细菌性复合特性的Thuricide制剂。截至目前，仅博尔库姆岛至巴尔特鲁姆岛一线的岛屿遭受了该虫害，朗厄奥格岛、施皮克奥格岛与旺格奥格岛均未受波及。该虫害是否会继续向东扩散，仍有待观察。