Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Street, 1113, Sofia, Bulgaria.
National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000, Sofia, Bulgaria.
Parasitol Res. 2020 Jul;119(7):2105-2112. doi: 10.1007/s00436-020-06699-z. Epub 2020 May 7.
Black bullhead Ameiurus melas (Actinopterygii: Siluriformes) is an alien fish species of North American origin, which has expanded its invasive geographical range in Europe. In 2017-2019, 32 black bullhead specimens from the Lake Srebarna Biosphere Reserve, Bulgaria, were examined for monogenean parasites. Two species of monogeneans were recorded and identified on the basis of morphological and molecular data: Ligictaluridus pricei (Ancyrocephalidae), with prevalence 100% and intensity 2-32 (mean 13.3 ± 6.8), and Gyrodactylus nebulosus (Gyrodactylidae), with prevalence 72.0% and intensity 1-15 (mean 7.4 ± 4.3). Partial 18S rDNA and the ITS1 region of L. pricei were sequenced. For G. nebulosus, sequenced genes included the partial 18S rDNA and the entire ITS1-5.8S rDNA-ITS2 region as well as the mitochondrial COI gene. Both recorded monogenean species are specific parasites of North American ictalurid fishes and alien to Europe. The present study is the first record of L. pricei from Bulgaria and the first record of G. nebulosus from Europe and the Palaearctic Region.
黑褐拟铲颌鱼(硬骨鱼纲:鲶形目)是一种原产于北美的外来鱼类物种,已在欧洲扩展了其入侵的地理范围。2017-2019 年,对保加利亚斯雷巴尔纳生物圈保护区的 32 条黑褐拟铲颌鱼标本进行了检查,以研究其单殖吸虫寄生虫。根据形态学和分子数据记录并鉴定了两种单殖吸虫:Ligictaluridus pricei(Ancyrocephalidae),其流行率为 100%,强度为 2-32(平均值为 13.3±6.8),和 Gyrodactylus nebulosus(Gyrodactylidae),其流行率为 72.0%,强度为 1-15(平均值为 7.4±4.3)。对 L. pricei 的部分 18S rDNA 和 ITS1 区域进行了测序。对于 G. nebulosus,测序的基因包括部分 18S rDNA 和整个 ITS1-5.8S rDNA-ITS2 区域以及线粒体 COI 基因。记录的两种单殖吸虫都是北美的 ictalurid 鱼类的特异性寄生虫,对欧洲来说是外来物种。本研究是保加利亚首次记录到 L. pricei,也是欧洲和古北界首次记录到 G. nebulosus。