Populacijska struktura i invazivnost crvenperke, Scardinius erythrophthalmus (Linnaeus, 1758) u Prošćanskom jezeru

master's thesis

• Title (english): Population structure and invasiveness of common rudd, Scardinius erythrophthalmus (Linnaeus, 1758) in Prošćansko Lake
• Author: Nikola Renić
• Mentor: Ivana Buj (mentor)
• Committee member: Ivana Buj (predsjednik povjerenstva)
• Committee member: Ines Radanović (član povjerenstva)
• Committee member: Željka Soldin (član povjerenstva)
• Committee member: Draginja Mrvoš-Sermek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2021-12-17, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Sustav Plitvičkih jezera predstavlja izrazito važno ihtiološko područje s obzirom na činjenicu da se
njegova ihtiocenoza podosta razlikuje od ihtiocenoza okolnih slatkovodnih sustava. Vrste koje se
nalaze u samom sustavu nisu brojne, ali njihova raznolikost predstavlja bogatstvo hrvatske
bioraznolikosti. Slatkovodni sustavi često su podležni različitim ljudskim utjecajima, a najveći
negativni utjecaj imaju širenje i unošenje stranih vrsta. Upravo na Plitvička jezera unesena je i
crvenperka. Cilj je utvrditi na koji način populacija crvenperke utječe na autohtone vrste, procijeniti
invazivnost te proučiti populacijsku strukturu crvenperke u Prošćanskom jezeru. Za istraživanje
sam koristio crvenperke ulovljene mrežama s pet lokaliteta na Prošćanskom jezeru, izmjerene su
im standardna i ukupna duljina te masa. Na temelju dobivenih podataka proveo samstatističke
analize. Poulacija crvenperke,koja ima eksponencijalnu stopu razmnožavanja, uspješno vrši
kompeticijski i predatorski pritisak na nativne vrste, najviše na populacije dunavske pastrve koje
su osjetljive na bilo kakve promjene unutar ekosustava u kojem obitavaju. Također, crvenperke iz
Prošćanskog jezera jasno pokazuju preferenciju prema određenom tipu mikrostaništa ovisno o
veličinsko-starosnoj kategoriji kojoj pripadaju

Abstract (english)

The Plitvice Lakes system is an extremely important ichthyological area due to the fact that its
ichthyocenosis is quite different from the ichthyocenoses of the surrounding freshwater systems.
The species found in the system itself are not numerous, but their diversity represents the richness
of Croatian biodiversity. Freshwater systems are often subject to various human influences, with
the introduction of alien species having the greatest negative impact. Rudd was also introduced to
Plitvice Lakes. The aim is to determine how the rudd population affects native species, to assess
invasiveness and to study the population structure of the rudd in Prošćansko Lake. Rudd caught
with nets from five localities on Prošćansko Lake were used for the research, with their standard
and total length and mass measured. A statistical analysis was made from the obtained data. Such
population that has an exponential reproduction rate successfully exerts competitive and predatory
pressure on native species, most notably Black Sea salmon populations that are sensitive to any
changes within the ecosystem which they inhabit. Also, rudd from Prošćansko Lake clearly shows
a preference for a certain type of microhabitat depending on the size and age category to which
they belong.

• Keywords: ugroženost; Plitvička jezera; ihtiocenoza; antropogeni utjecaj; konzervacija
• Keywords (english): endangerment; Plitvice Lakes; ichthyocenosis; anthropogenic impact; conservation
• Language: croatian
• URN:NBN: urn:nbn:hr:217:765811
• Study programme: Title: Integrated undergraduate and graduate university study of Biology and Chemistry Education; specializations in: Integrated undergraduate and graduate university study of Biology and Chemistry Education; Course: Integrated undergraduate and graduate university study of Biology and Chemistry Education; Study programme type: university; Study level: integrated undergraduate and graduate; Academic / professional title: magistar/magistra edukacije biologije i kemije (magistar/magistra edukacije biologije i kemije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access; Embargo expiration date: 2023-12-17
• Created on: 2021-12-22 12:36:50