First record and eradication of Hirschmanniella caudacrena in Denmark
The NPPO of Denmark recently informed the EPPO Secretariat of the first finding of the nematode Hirschmanniella caudacrena on its territory. Hirschmanniella spp. (except H. behningi, H. gracilis, H. loofi and H. zostericola) are A1 quarantine pests for the EU.
H. caudacrena was found in January 2023 in the municipality of Aarhus (region of Midtjylland) in a nursery growing aquatic plants. The nematode was detected in plants in the genus Vallisneria and the genus Aponogeton. The Vallisneria plants were grown in aquaculture in a greenhouse with recirculating water. All plants have been destroyed and the production site has been disinfected. Several small lots of aquatic plants from the infested production site, had been delivered to other EU Member States which have been informed.
The pest status of Hirschmanniella caudacrena in Denmark is officially declared as: Absent, pest eradicated.
Sources
NPPO of Denmark (2023-02).