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master's thesis
Sastav prehrane štuke (Esox lucius Linnaeus, 1758) unesene u rijeku Vrljiku
Zagreb: University of Zagreb, Faculty of Agriculture, 2024. urn:nbn:hr:204:659695
Majnarić, Dajana
University of Zagreb
Faculty of Agriculture
Fisheries, Beekeeping, Game Management and Special Zoology

Institutional repository: Repository Faculty of Agriculture University of Zagreb

Cite this document

Majnarić, D. (2024). Sastav prehrane štuke (Esox lucius Linnaeus, 1758) unesene u rijeku Vrljiku (Master's thesis). Zagreb: University of Zagreb, Faculty of Agriculture. Retrieved from https://urn.nsk.hr/urn:nbn:hr:204:659695

Majnarić, Dajana. "Sastav prehrane štuke (Esox lucius Linnaeus, 1758) unesene u rijeku Vrljiku." Master's thesis, University of Zagreb, Faculty of Agriculture, 2024. https://urn.nsk.hr/urn:nbn:hr:204:659695

Majnarić, Dajana. "Sastav prehrane štuke (Esox lucius Linnaeus, 1758) unesene u rijeku Vrljiku." Master's thesis, University of Zagreb, Faculty of Agriculture, 2024. https://urn.nsk.hr/urn:nbn:hr:204:659695

Majnarić, D. (2024). 'Sastav prehrane štuke (Esox lucius Linnaeus, 1758) unesene u rijeku Vrljiku', Master's thesis, University of Zagreb, Faculty of Agriculture, accessed 17 November 2024, https://urn.nsk.hr/urn:nbn:hr:204:659695

Majnarić D. Sastav prehrane štuke (Esox lucius Linnaeus, 1758) unesene u rijeku Vrljiku [Master's thesis]. Zagreb: University of Zagreb, Faculty of Agriculture; 2024 [cited 2024 November 17] Available at: https://urn.nsk.hr/urn:nbn:hr:204:659695

D. Majnarić, "Sastav prehrane štuke (Esox lucius Linnaeus, 1758) unesene u rijeku Vrljiku", Master's thesis, University of Zagreb, Faculty of Agriculture, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:204:659695

Metadata
TitleSastav prehrane štuke (Esox lucius Linnaeus, 1758) unesene u rijeku Vrljiku
Title (english)Diet composition of pike (Esox lucius Linnaeus, 1758) introduced in Vrljika river
AuthorDajana Majnarić
MentorDaniel Matulić (mentor)
MentorGoran Jakšić (komentor)
Committee memberDaniel Matulić (predsjednik povjerenstva)
Committee memberGoran Jakšić (član povjerenstva)
Committee memberTea Tomljanovic (član povjerenstva)
Committee memberAna Gavrilović (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Agriculture
(Fisheries, Beekeeping, Game Management and Special Zoology)
Zagreb
Defense date and country2024-09-19, Croatia
Scientific / art field,
discipline and subdiscipline		BIOTECHNICAL SCIENCES
Agronomy
Abstract
Cilj rada bio je analizirati prirodnu prehranu štuke (Esox lucius) naturalizirane u gornjem toku rijeke Vrljike. Prikupljeno je 38 jedinki štuke u veljači 2020. godine. Svakoj jedinki izdvojeno je probavilo rezanjem kod jednjaka i analnog otvora te su pronađene svojte determinirane do razine razreda i reda, a neke i do vrste. Kako bi dobili uvid u kvalitativni i kvantitativni sastav prehrane štuke u Vrljici, izračunat je postotak brojnosti (%N), postotak učestalosti pojavljivanja (%F), postotak mase (%W) i indeks relativne važnosti (%IRI). Od ukupno 38 analiziranih jedinki, kod njih 17 (44,74%) utvrđeno je puno, a kod 21 (55,26%) prazno probavilo. Jedinke manje od 50 cm ukupne duljine tijela preferiraju ribu kao svoj plijen, dok kod jedinki ukupne duljine tijela manje od 50 cm najveću zastupljenost u prehrani imaju rakušci iz reda Amphipoda i jednakonošci iz reda Isopoda. U prehrani štuka iz Vrljike determinirane su tri vrste riba, od kojih su dvije endemske basak (Rutilus basak) i imotska gaovica (Delminichthys adspersus) i štuka (Esox lucius) s čime se potvrdio kanibalizam kod štuke. Rezultati izračuna navedenih metoda prikazuju da štuka preferira drugačiji plijen ovisno o njezinoj dužini tijela.
Abstract (english)
The aim of this study was to analyze the natural food diet composition of pike introduced and naturalized in the upper course of the Vrljika River. In February 2020., 38 individuals of pike were collected. Digestion was isolated from each individual by cutting the esophagus and anal opening. The individuals analyzed were determined to the class and level of order. Out of a total of 38 analyzed pike, 17 (44,74%) of them had a full and 21 (55,26%) had an empty stomach. In order to gain an insight into the qualitative and quantitative composition of the diet of pike in Vrljika, the percentage of abundance (%N), the percentage of frequency of occurrence (%F), the percentage of mass (%W) and the relative importance index (%IRI) were calculated. The calculation results of the mentioned methods show that pike prefers different prey depending on the body length. Pike with a total body length of less than 50 cm prefer fish as their prey, while for pike with total body length of less than 50 cm, crustaceans from the order Amphipoda and Isopoda are the most important in their diet. Three types of fish have been found in the diet of pike in Vrljika river, two of them are endemic; basak (Rutilus basak) and spotted minnow (Delminichthys adspersus), and pike (Esox lucius) which confirmed cannibalism in pike.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:204:659695
Study programmeTitle: 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 resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-10-01 08:48:07