Ekspresowa Analiza Zagrożenia Agrofagiem: Liriomyza huidobrensis Blanchard, 1926

The rate at which the organisms spread is primarily influenced by the rate at which the population expands and the dispersal capabilities of the species. Liriomyza huidobrensis is a polyphage, and its hosts are commonly cultivated in the PRA area. The leaf miner poses a threat primarily to greenhouse crops of ornamental plants in Poland, as well as cucumber and lettuce. In its countries of origin and some regions of the Mediterranean area, it is a pest of field crops - potato, sugar beet, vegetables and ornamentals. In the region of Central and Eastern Europe, under conditions less favorable for its development, it is recorded in dispersal. However, given the biology of the species and climatic scenarios in the PRA area, it seems unlikely that the agrophage will survive the winter outside protected crops. Nevertheless, many experts say that the probability under external conditions increases as the winter periods shorten and become milder, a phenomenon that has been observed in the PRA area for several seasons. Proper identification and effective monitoring are key to reducing the movement of the pest. An effective method is yellow sticky boards placed at plant height, at the production site, packing houses or storage facilities. The difficulty is how to distinguish L. huidobrensis from other species in the genus, especially for larvae and pupae. In addition, detection of the pest in shipments (packages) as a result of visual inspection of the batch to be shipped or monitoring is difficult due to the possibility that the insect may be present at different life stages at any given time (eggs, in particular, are difficult to detect). The probability of infiltration without taking phytosanitary measures is high, mainly due to the importation of ornamental plants, seedlings and vegetables from countries where the agrophage is present. For this reason, the working group recommends showing L. huidobrensis as a controlled non-quarantine pest. Applying protection zones to areas where the species is not yet present will prevent its further spread. In addition, host plant regulations should be updated to include additional commodities potentially susceptible to colonization by L. huidobrensis. A possible control option seems to be the use of insecticides once the pest is established.PL; pl; PDF; kwarantanna@iorpib.poznan.p