Morphological characters of the Delminichthys species (Cyprinidae; Actinopterygii)

Opašić, Matija (2014) Morphological characters of the Delminichthys species (Cyprinidae; Actinopterygii). Diploma thesis, Faculty of Science > Department of Biology.

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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.

Item Type: Thesis (Diploma thesis)
Keywords: Delminichthys, morphology, minnows
Supervisor: Mrakovčić, Milorad
Co-supervisor: Buj, Ivana
Date: 2014
Number of Pages: 57
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 26 Mar 2014 13:39
Last Modified: 26 Mar 2014 13:39

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