Supplementary data – Catfish treatment for Thaparocleidus vistulensis infection – Wan Sajiri, 2026https://hdl.handle.net/21.15109/ARP/8KFOKVWan Sajiri, Wan Muhammad HazimSzékely, CsabaBuchmann, KurtSellyei, BoglárkaARP2026-06-042026-06-04T14:33:47ZSevere infections with the gill monogenean Thaparocleidus vistulensis hinder the aquaculture of European catfish (Silurus glanis), promoting farmers to use broad-spectrum chemotherapeutants for control. This study aimed to describe the in vivo efficacy of specific anthelmintics, such as Praziquantel (PZQ) and Mebendazole (MBZ) (administered as bath treatments), against the infection. Initial toxicity tests exposed juvenile European catfish to PZQ and MBZ at concentrations of 0, 10, and 20 mg/L (24 h bath treatment) followed by a 14 days post-treatment (dpt) observation period. These tests demonstrated that European catfish could tolerate 10 mg/L of PZQ and MBZ without any signs of stress. In vivo treatment experiments were conducted by exposing experimentally infected catfish to 0, 1, 5, and 10 mg/L of PZQ or MBZ, after which fish were examined 1, 7, and 14 dpt. PZQ at the highest concentration eliminated 100% of parasites from the gills of juvenile European catfish within 24 h. MBZ displayed a delayed effect, with a 98% reduction in parasites at 14 dpt, even at the lowest concentration. Based on these results, it is possible to establish a strategy for treating European catfish against T. vistulensis infections, which can minimise the use of chemicals in aquaculture.Agricultural SciencesMonogenean controlFish parasitologyAnthelmintic treatmentBath chemotherapeutantsParasite managementAquaculture healthEnglishWan Muhammad Hazim Wan Sajiri, Csaba Székely, Kurt Buchmann, Boglárka Sellyei, In vivo efficacy of conventional parasiticides on Thaparocleidus vistulensis (Siwak, 1932) (Monopisthocotylea) parasitizing European catfish (Silurus glanis), Aquaculture Reports, Volume 48, 2026, 103653, ISSN 2352-5134, doi, 10.1016/j.aqrep.2026.103653, https://www.sciencedirect.com/science/article/pii/S23525134260029302026-06-04Kaján, Győző László2026-06-04CC BY-NC 4.0