| Sažetak | U ovom radu istraživan je sastav populacija bentoskih mekušaca na području ušća rijeke Neretve. Uzorkovanje je obavljano na dvije postaje, Ušće Neretve i Osinj, u rujnu i srpnju 2014. godine. Također su obavljena morfometrijska mjerenja te izračunat indeks kondicije komercijalno najvažnije i najzastupljenije vrste školjkaša Chamelea gallina. Duljina uzoraka kretala se u rasponu od 22,34 mm na postaji Ušće u srpnju do najmanje 15,36 mm na postaji Osinj u rujnu. Visina uzoraka kretala se od najveće 20,25 mm na postaji Ušće Neretve do najmanje 13,69 mm na postaji Osinj, dok je najveća prosječna širina uzoraka na postaji Ušće Neretve iznosila 12,76 mm,a najmanja je utvrđena u rujnu na postaji Osinj i iznosila je 8,46 mm. Što se tiče prosječne vrijednosti indeksa kondicije jedinke Chamelea gallina najveća je utvrđena u srpnju na postaji Osinj i iznosila je 17,85, a najmanja vrijednost bila je također u srpnju na postaji Ušće Neretve i iznosila je 13,75 što pokazuje značajno veću razliku između postaja.
Tijekom istraživanja je identificirano ukupno 15 vrsta mekušaca: C. gallina, Cerastoderma glaucum, Tritia reticulata, Tritia pellucida, Donax semistriatus, Donax trunculus, Tellina tenuis, Loripes orbiculatus, Mimachlamys varia, Lucinela divaricata, Hexaplex trunculus, Spisula substruncata, Ruditapes decussatus, Mytilus galloprovincialis i Gibbula umbilicaris.
Na temelju dobivenih rezultata najveći prosječni udio u ukupnom uzorku je utvrđen za vrstu C. gallina. |
| Sažetak (engleski) | In this thesis the composition of the benthic molluscs in the estuary of river Neretva was investigated. The sampling was done in two stations, estuary of the river Neretva and Osinj, in September and July in 2014. Morphometric measures and condition index of the commercially most important and the most common shellfish Chamelea gallina was also done. The length of the samples ranged from 22.34 mm in Neretva estuary station in July to 15.36 mm in Osinj station in September. The height of the samples ranged from 20.25 mm in Neretva estuary to 13.69 mm in the Osinj station. The biggest width of samples was recorded in Neretva estuary station and it was 12.76 mm, while the lowest one was established in September in Osinj station and it was 8.46 mm. As far as the average value of index condition of Chamelea gallina is concerned the largest was established in July in Osinj station and it was 17.85 mm and the lowest one was 13.75 mm also in July in of Neretva estuary station that showed significant difference between the stations.
During the research 15 species of molluscs were identified: C. gallina, Cerastoderma glaucum, Nassarius reticulatus, Tritia pellucida, Donax semistriatus, Donax trunculus, Tellina tenuis, Loripes orbiculatus, Mimachlamys varia, Lucinela divaricata, Hexaplex trunculus, Spisula substruncata, Ruditapes decussatus, Mytilus galloprovincialis, and Gibbula umbilicaris.
Based on the obtained results the largest average share in the total sample was established for the species C. gallina. |
