Gene diversity and degree of hybridisation in water frogs of the genus Pelophylax Fitzinger, 1843 (Anura: Ranidae) from Crna Mlaka

Koska, Sara (2016) Gene diversity and degree of hybridisation in water frogs of the genus Pelophylax Fitzinger, 1843 (Anura: Ranidae) from Crna Mlaka. Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

Water frogs of the genus Pelophylax Fitzinger, 1843 are one of the most studied animal groups because some of the species of this genus naturally hybridise. During last few years, methods in molecular biology have been developed that are succesful in determination of the genus species, when there is some gene variability among them. Croatia is located on a large green frogs gene variability area, which is a result of its geological past. In this study, by using molecular markers citochrome b and serum albumin intron region 1, the results have shown the presence of previously known species Pelophylax lessonae and Pelophylax ridibundus and their hybrid Pelophyax kl. esculentus from Crna Mlaka area. The results have also shown the presence of previously unknown species for that area Pelophylax kurtmuelleri and Pelophylax shqipericus and hybrid P. kurtmuelleri x P. shqipericus. Also, until now unknown hybrids P. shqipericus x P. ridibundus, P. ridibundus x P. kurtmuelleri and P. lessonae x P. kurtmuelleri have been recorded. „Pure“ species are numerous than hybrids, but they are equally frequent both in spring and autumn. Molecular-phylogenetic methods show clear separation of P. ridibundus and P. kurtmuelleri. Allochtonous species represent potential danger for native species because of their rapid spreading and it is important to carry out further studies for establishing the degree of hybridisation.

Item Type: Thesis (Diploma thesis)
Keywords: genus Pelophylax, citochrome b, serum albumin intron region 1, allochtonous species, hybrids
Supervisor: Franjević, Damjan
Co-supervisor: Jelić, Mišel
Date: 2016
Number of Pages: 51
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Grozdana Sirotic
Date Deposited: 19 Jan 2017 10:20
Last Modified: 19 Jan 2017 10:20
URI: http://digre.pmf.unizg.hr/id/eprint/5426

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