Morfološke značajke vrsta roda Delminichthys (Cyprinidae; Actinopterygii)

master's thesis

• Title (english): Morphological characters of the Delminichthys species (Cyprinidae; Actionpterygii)
• Author: Matija Opašić
• Mentor: Milorad Mrakovčić (mentor)
• Committee member: Milorad Mrakovčić (član povjerenstva)
• Committee member: Božena Mitić (član povjerenstva)
• Committee member: Petra Korać (član povjerenstva)
• Committee member: Antun Alegro (član povjerenstva)
• Granter: University of Zagreb; Faculty of Science; (Department of Biology); Zagreb
• Defense date and country: 2014-02-26, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Biology

Abstract

Rod Delminichthys obuhvaća 4 endemične vrste Hrvatske i Hercegovine: Delminichthys ghetaldii, D. adspersus, D. jadovensis i D. krbavensis. Cilj ovog rada bio je dobiti nova saznanja o morfologiji tih vrsta, te ustanoviti postoje li morfološke razlike između pojedinih populacija. Istraživanje je obuhvatilo 8 rijeka i izvora: Jadovu, Vrljiku, Maticu, Prološko blato, Krbavu, Omblu te Dabarsko i Fatničko polje. Morfološke analize uključivale su proučavanje morfometrije, meristike i vanjskog izgleda. Morfometrijske značajke analizirane su raznim statističkim analizama, a dobiveni rezultati uspoređeni su s dostupnim literaturnim podacima. Najznačajnija determinacijska svojstva su: brazda iznad gornje usne, promjer oka, broj ljusaka s porama u bočnoj pruzi, položaj usta te broj segmentiranih šipčica prsnih peraja. Morfologija uglavnom potvrđuje postojeću podjelu, ali i ukazuje na razlike među populacijama iste vrste unutar D. adspersus te razlike populacije iz Omble i ostalih populacija D. ghetaldii (po subterminalnim ustima, manjku pigmentacije po cijelom tijelu te jednoliko raspoređenim tamnim mrljama na leđima i bokovima). Dosadašnji ključ za determinaciju vrsta roda Delminichthys je ispravan,ali je u njemu potrebno vršiti manje izmjene u rasponu broja ljusaka te dodati broj segmentiranih šipčica u prsnoj peraji kao dodatnu dijagnostičku značajku.

Abstract (english)

Genus Delminichthys includes four endemic species from Croatia and Herzegovina: Delminichthys ghetaldii, D. adspersus, D. jadovensis and D. krbavensis. Objectives of this research were to get a new cognition about the morphology of the species and establish morphological differences among different populations. The research was conducted on eight rivers and springs: Jadova, Vrljika, Matica, Prološko blato, Krbava, Ombla, Dabarsko polje and Fatničko polje. Morphological analyses encompassed study of morphometric, meristic and phenological characters. Morphometric characters were analysed with various statistical methods. Obtained data were compared with results from previous research. The most important deterministic attributes are: groove behind upper lip, eye diameter, number of pored scales along lateral line, mouth position and number of branched rays in pectoral fins. Morphology mostly confirms existing classification, with some difference between populations of the same species within D. adspersus and difference between population in Ombla and other D. ghetaldii populations (in subterminal mouth, lack of body pigmentation and uniform dark spots on the back and flanks). Present key for determination of Delminichthys species is valid, with some minor corrections in number of pored scales range and adding the number of branched rays in pectorals fin as additional diagnostic attribute.

• Keywords: Delminichthys; morfologija; gaovice
• Keywords (english): Delminichthys; morphology; minnows
• Language: croatian
• URN:NBN: urn:nbn:hr:217:032765
• Study programme: Title: Ecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-04-26 10:57:47