Varijacije oblika ljusaka i otolita dviju populacija riba rijeke Sunje iz različitih staništa

master's thesis

• Title (english): Variations in the shape of scales and otoliths of two fish populations of the Sunja River from different habitats
• Author: Jakov Radečić
• Mentor: Marina Piria (mentor)
• Committee member: Marina Piria (predsjednik povjerenstva)
• Committee member: Tea Tomljanović (član povjerenstva)
• Committee member: Ivan Špelić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Fisheries, Beekeeping, Game Management and Special Zoology); Zagreb
• Defense date and country: 2024-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Ovim radom se istražuje utjecaj izgradnje hidroelektrane Klipić na rijeci Sunji na oblik otolita i ljusaka kod dviju vrsta riba: klena (Squalius cephalus) i sunčanice (Lepomis gibbosus). Cilj je utvrditi razlike u obliku otolita i ljusaka iznad i ispod brane te usporediti njihovu upotrebljivost u razlikovanju različiih populacija istraživanih vrsta riba. Istraživanje se temelji na metodama geometrijske morfometrije. Uzorkovanje je provedeno na tri lokacije rijeke Sunje: iznad brane (lokacije... More Staza i Mlin) i ispod brane (lokacija Klipić). Analize su pokazale značajne razlike u obliku ljusaka klena između lokacija Staza i Klipić, dok su kod sunčanica uočene razlike između lokacija Mlin i Klipić. Otoliti klena pokazali su značajne razlike između lokacija Staza i Klipić, dok razlike u otolitima sunčanica nisu bile značajne. Rezultati ukazuju na utjecaj brane na morfološke karakteristike riba i potvrđuju da otoliti i ljuske mogu biti korisni u proučavanju promjena u ribljim populacijama. Less

Abstract (english)

This study examines the impact of the Klipić hydroelectric power plant, built in the Sunja River, on the shape of otoliths and scales in two fish species: the chub (Squalius cephalus) and the pumpkinseed (Lepomis gibbosus). The aim is to identify differences in otolith and scale shapes between fish populations above and below the dam and to compare their effectiveness in distinguishing these populations. The geometric morphometric methods were used to test this aim. Sampling was conducted... More at three locations along the Sunja River: above the dam (Staza and Mlin) and below the dam (Klipić). The analyses revealed significant differences in chub scale shape between Staza and Klipić locations, while pumpkinseed scales differed significantly between Mlin and Klipić. Chub otoliths showed significant differences between Staza and Klipić, whereas differences in pumpkinseed otoliths were not significant. The results indicate the dam's impact on fish morphological characteristics and confirm that otoliths and scales can be useful for studying changes in fish populations. Less

• Keywords: geometrijska morfometrija; otoliti; ljuske; Squalius cephalus; Lepomis gibbosus; rijeka
• Keywords (english): geometric morphometric; otoliths; scales; Squalius cephalus; Lepomis gibbosus; river
• Language: croatian
• URN:NBN: urn:nbn:hr:204:919312
• Study programme: Title: Fisheries and Game Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka ribarstva i lovstva (magistar/ magistra inženjer/inženjerka ribarstva i lovstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2024-10-22 09:20:54