The First Record of Gyrodactylus perccotti Ergens & Yukhimenko, 1973 (Monopisthocotyla: Gyrodactylidae), A Parasite of the Alien Chinese Sleeper (Perccottus glenii Dybowski, 1877), in Bulgaria
摘要
The Chinese sleeper Perccottus glenii is native in East Asia and has become invasive in West Siberia and Europe. It was recorded in the Bulgarian section of the Danube in 2005. The aim of the present study is to report on the presence of gyrodactylid infection in this alien fish species.
MethodsIn the spring of 2019, two specimens of P. glenii were caught from the Lake Srebarna Biosphere Reserve (Northeastern Bulgaria) and examined for ectoparasites. The gyrodactylid specimens found were studied morphologically in glycerine-gelatine mounts. The ITS1-5.8 S-ITS2 fragment of rDNA was analysed.
ResultsGyrodactylus perccotti, a specific parasite of the Chinese sleeper, was found on the caudal fin of one of the studied specimens with low abundance, two specimens only. The morphology and the DNA analysis showed full correspondence with the previously published data.
ConclusionsThis finding represents the first record of G. perccotti from Bulgaria. The results of the present study increase the knowledge of the non-native geographical range of G. perccotti.