Rasprostranjenost, morfometrijske značajke i genska raznolikost pastrvskog grgeča (Micropterus salmoides (Lacepede, 1802)) u Hrvatskoj

master's thesis

• Title (english): The distribution, morphometric characteristics and genetic diversity of largemouth bass (Micropterus salmoides (Lacepede, 1802)) in Croatia
• Author: Roman Karlović
• Mentor: Marko Ćaleta (mentor)
• Mentor: Ivana Buj (mentor)
• Committee member: Ivana Buj (predsjednik povjerenstva)
• Committee member: Duje Lisičić (član povjerenstva)
• Committee member: Antun Alegro (član povjerenstva)
• Committee member: Marija Ivković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2019-09-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Pastrvski grgeč (Micropterus salmoides (Lacepède, 1802)) dobro je poznata vrsta ribe,
ponajviše zbog brojnih istraživanja u Sjevernoj Americi od kuda vrsta i potječe. Pastrvski
grgeč, danas rasprostranjen diljem svijeta, na glasu je kao jedna od najpopularnijih i
najvrjednijih vrsta riba u sportskom ribolovu i ribolovnom turizmu, u Republici Hrvatskoj se
smatra stranom invazivnom vrstom visokog rizika. Cilj ovog istraživanja je proučavanje
značajki populacija pastrvskog grgeča u RH. Istraživanje rasprostranjenosti provedeno je
pregledom literature, terenskim istraživanjima i pregledom podataka dobivenih od sportskih
ribolovaca, te je istraživanjem rasprostranjenosti utvrđen poseban uzorak povećanja broja
lokaliteta od početka 20. stoljeća do danas. Morfološke razlike jedinki iz slivova rijeka Drave
i Save, te jadranskog sliva (ukupno 15 lokacija) prikazane su dvodimenzionalnom mrežom i
analizirane statističkim metodama, te su utvrđene manje morfometrijske razlike između
istraživanih grupa. Filogenetska rekonstrukcija se temeljila na sekvencama gena za kontrolnu
regiju (CR) te je provedena pomoću metoda najveće parsimonije (MP), najveće vjerojatnosti
(ML) i susjednog povezivanja (MJ). Analiza populacijske genetike pastrvskog grgeča u
Hrvatskoj sugerira na malu raznolikost i malen broj inicijalno unesenih jedinki, te potvrđuju
tezu o ilegalnim translokacijama. Također otkriven je poseban haplotip čije postojanje u
jezeru Jarun i zanimljiv filogenetski položaj nisu posve razjašnjen.

Abstract (english)

The largemouth bass (Micropterus salmoides (Lacepède, 1802)) is one of the best known
species of fish in the world, mainly because of numerous studies in North America from
where it originates. Today largemouth bass is widely spread throughout the world as one of
the most popular and valuable fish species in sport fishing and fishing tourism, while in the
Republic of Croatia is considered to be a high risk foreign invasive species. The aim of this
study is to examine the characteristics of largemouth bass populations in Croatia. Outspread
research is conducted through literature reviews, field surveys, and data obtained from sport
fishermen. This part of research shows a specific pattern of increasing localities number from
the early 20th century to the present. The morphological differences of the individuals from
the Drava and Sava river basins and the Adriatic basin (15 sites in total) were shown by a 2D
network and analyzed by statistical methods. Minor morphometric differences were found
between the studied groups. Phylogenetic reconstruction was based on the control region (CR)
gene sequences and was conducted using following methods: maximum parsimony (MP),
maximum likelihood (ML), and media joining (MJ). A genetic study of largemouth bass
population characteristics in Croatia suggests a small diversity and a small number of
individuals initially introduced, and also confirms thesis of illegal translocations. Also, special
haplotype is discovered whose existence in Lake Jarun and an interesting phylogenetic
position have not been fully clarified.

• Keywords: pastrvski grgeč; rasprostranjenost; morfometrija; genetika; Hrvatska
• Keywords (english): Largemouth bass; morphometry; genetics; distribution; Croatia
• Language: croatian
• URN:NBN: urn:nbn:hr:217:136545
• Study programme: Title: Experimental Biology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra eksperimentalne biologije (magistar/magistra eksperimentalne biologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2019-11-29 10:04:58