Diverzitet mekušaca Dunava (1260-863,5 rkm) i taksonomska analiza rodova Planorbarius, Radix, Physella, i Ferrissia (Pulmonata:Basommatophora)
Diversity of Molluscs in the Danube river (1269-863.5 rkm) and taxonomic analysis of the genera Planorbarius, Radix, Physella and Ferrissia (Pulmonata: Basommatophora)
Doctoral thesis (Published version)
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Fresh water molluscs analysis was performed through three zones of The Danube main flow (1260-863.5 rkm) as well as flooding zone, on the left river bank from 1080 to 1085 rkm. Samples were collected seasonally (April, June, September and November), in three repetitions, along with samples for physical and chemical analysis of water and sediment quality. This research presents detailed summary of composition and distribution of malacofauna in analysed part of the river flow under different influence of anthropogenic pressure. Molecular methods were used for establishing phylogenetic relationships among native and alien species from Basommatophora order.Analysis of aquatic macroinvertebrate communities showed that river flooding zone is characterized by highest percentage of occurrence for insect groups (61.69%) as well as phytophilic species of freshwater molluscs (15%). Localities from riverine, transitional and lacustrine zone are characterized by large percentage of occurrence of Oligochaeta (37.89%, 63.83%, 83.99%), then Bivalvia (38.21%, 24.35%, 16.72%) and Crustacea (15.82%, 31.11%, 13.73%), which is characteristic for macroinvertebrate communities of potamon river type.Analysis of aquatic molluscs communities showed that 32 taxa from 28 genera and 13 families within two classes Bivalvia and Gastropoda were recorded.Class Bivalvia is represented with 12 taxa from four families within orders Veneroida and Unionida. Highest percentage, 92% from total number of all recorded taxa within class Bivalvia, was found in localities in transitional zone, about 75% in lacustrine zone; lowest percentage of identified taxa was recorded at riverine zone localities (41%).Classis Gastropoda is represented with 20 taxa from two subclasses, Prosobranchia (Orthogastropoda) and Pulmonata...
Keywords:The Danube; Flooding zone; Aquatic molluscs; Phylogenetic analysis; Alien species; flooding zone; aquatic molluscs; phylogenetic analysis; alien species
Source:University of Belgrade, Faculty of Biology, 2015, 1-147
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