Diplozoids (Monogenea) from the endemic cyprinid species from Mediterranean area: diversity and phylogeny.
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| Year of publication | 2018 |
| Type | Conference abstract |
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| Description | The Mediterranean area is unique for the presence of many endemic fi sh species, especially cyprinids. However, the evidence and studies focussing on extensive research of diplozoid species of endemic cyprinids are rather exceptional. During 2014-2017 a total of 125 endemic cyprinid species were sampled in the selected areas of Mediterranean and examined for gill parasites. Identifi cation of diplozoid species was based on the morphometric analyses of sclerotized parts of attachment organ and molecular analyses performed using ITS2 region of nuclear ribosomal DNA. We investigated the phylogenetic relations among species of Paradiplozoon. Over 1000 specimens of diplozoids were reported on endemic cyprinids and a total of fi ve species of the genus Paradiplozoon were identifi ed. Paradiplozoon homoion, a common parasite of several species of cyprinids in Palaearctic region, reached the highest abundance. This study reveals seventeen new host records of P. homoion representing 12 cyprinid species in Balkan Peninsula and 5 cyprinid species in Spain. We also identifi ed Paradiplozoon megan, known as a parasite of cyprinids of the genera Squalius and Leuciscus in Palaearctic region. This study provides new host records of P. megan on endemic cyprinids, i.e. Squalius zrmanjae and S. squalus from Croatia and S. lucumonis, S. squalus, Protochondrostoma genei and Rutilus rubilio from Italy. Three new species of Paradiplozoon were reported on endemic cyprinids in Mediterranean. Paradiplozoon sp. 1 was recorded on Scardinius acarnanicus and Tropidophoxinellus hellenicus from Greece. On the base of phylogenetic analysis this species is closely related to P. megan. Paradiplozoon sp. 2 was discovered on fi ve genera of cyprinids in Iberian Peninsula, i.e. Luciobarbus, Squalius, Iberochondrostoma, Parachondrostoma and Pseudochondrostoma. Low population variability was found between Paradiplozoon sp. 2 parasitizing Spanish and Portugal cyprinids. This species was phylogenetically closely related to Paradiplozoon pavlovskii. Paradiplozoon sp. 3 was identifi ed on Luciobarbus lepineyi in Morocco. This species is phylogenetically related to P. bingolensis from Garra rufa (Turkey), and they are included in monophyletic group with African species Afrodiplozoon polycotyleus from Labeobarbus marequensis. |
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