Fauna buhača na šećernoj repi u Republici Hrvatskoj i Republici Austriji

master's thesis

• Title (english): Flea beetle fauna on sugar beet in Republic of Croatia and Republic of Austria
• Author: Ivana Rambrot
• Mentor: Renata Bažok (mentor)
• Committee member: Renata Bažok (predsjednik povjerenstva)
• Committee member: Darija Lemić (član povjerenstva)
• Committee member: Milan Pospišil (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Agricultural Zoology); Zagreb
• Defense date and country: 2023-09-28, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Šećerna repa važna je industrijska kultura u Hrvatskoj i Austriji. Kao jedina sirovina za
proizvodnju kristalnog šećera u Europi, očuvanje njene proizvodnje je od velike važnosti. U
posljednjih nekoliko godina pojavio se trend smanjenja proizvodnje šećerne repe zbog velikih
zahtjeva u vidu agrotehničkih mjera, potrebe za visokim ulaganjima te više znanja o
proizvodnji u odnosu na druge ratarske kulture, a uvjete dodatno otežavaju klimatske
promjene. Šećerna repa ima dugo vegetacijsko razdoblje tijekom kojeg ju napada veliki broj
štetnika. Buhači se ubrajaju u važne i redovite štetnike šećerne repe koji prave štete u
razvojnom stadiju kotiledona i prvih pravih listova. Dvije su vrste roda Chaetocnema koje
rade štete na poljima u Hrvatskoj i Austriji, a to su Chaetocnema tibialis Illiger i Chaetocnema
concinna Marsham. U literaturi se navodi da u obje države dominira C. tibialis, ali točni
omjeri brojnosti i detaljnija objašnjenja čimbenika koji utječu na dinamiku populacije nisu
dovoljno istražena. Cilj ovog rada bio je utvrditi koja vrsta buhača dominira na proizvodnim
područjima, kao i sakupljanje više podataka o rasprostranjenosti ovih vrsta na području
Austrije i Hrvatske. U travnju i svibnju 2022. godine buhači u Austriji prikupljeni su metodom
žute posude u više navrata, dok su buhači u Hrvatskoj prikupljeni metodom aspiratora u
kolovozu iste godine. Pomoću identifikacijskih ključeva koji se temelje na nekoliko suptilnih
morfoloških razlika, identificirane su vrste. Istraživanje je pokazalo da u Austriji kao i u
Hrvatskoj dominira vrsta C. tibialis. U Hrvatskoj nije pronađen ni jedan primjerak vrste C.
concinna. Razlog izostanku vrste C. concinna u uzorcima nije poznat no daljnja istraživanja bi
mogla utvrditi čimbenike koji su utjecali na brojnost istraživanih vrsta s obzirom na to da je
poznato da su populacije buhača šećerne repe uvelike uvjetovane ekološkim čimbenicima.

Abstract (english)

Sugar beet is an extremely important industrial plant in Croatia and Austria. As the only raw
material for the production of crystallized sugar in Europe, preserving its production is of
great importance. In the last few years, there has been a trend of reducing sugar beet
production due to high requirements in the form of agrotechnical measures, the need for
large investments and excellent knowledge about the production itself, with additional
aggravated conditions as a result of climate change. Sugar beet has a long growing season
during which a large number of pests attack. Flea beetles are among the important and
regular pests of sugar beet that cause damage in the development stage of the cotyledons
and the first true leaves. There are two species of the genus Chaetocnema that cause
damage to fields in Croatia and Austria, namely Chaetocnema tibialis Illiger and
Chaetocnema concinna Marsham. The literature states that C. tibialis dominates in both
countries, but the exact abundance ratios and more detailed explanations of the factors
influencing the population dynamics have not been sufficiently investigated. The aim of this
work was to determine which species dominates the production areas, as well as to collect
more data on the distribution of these species in Austria and Croatia. In April and May 2022,
fleas in Austria were collected using the yellow container method on several occasions, while
fleas in Croatia were collected using the aspirator method in August of the same year. Using
identification keys based on several subtle morphological differences, species are identified.
The research showed that the species C. tibialis dominates in Austria as well as in Croatia.
Not a single specimen of C. concinna was found in Croatia. The reason for the absence of the
species C. concinna in the samples is not known, but further research could determine the
factors that influenced the abundance of the studied species, given that it is known that
sugar beet flea beetle populations are largely conditioned by environmental factors.

• Keywords: šećerna repa; buhači; Chaetocnema
• Keywords (english): sugarbeet; flea beetles; Chaetocnema
• Language: croatian
• URN:NBN: urn:nbn:hr:204:835774
• Study programme: Title: Phytomedicine; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka fitomedicine (magistar/ magistra inženjer/inženjerka fitomedicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to authenticated users
• Created on: 2023-10-30 09:56:19