The minnow Phoxinus lumaireul (Leuciscidae) shifts the Adriatic–Black Sea basin divide in the north-western Dinaric Karst region

Susanne Reier (Author), Luise Kruckenhauser (Author), Aleš Snoj (Author), Peter Trontelj (Author), Anja Palandačić (Author)

Abstract

Karst landscapes are characterized by intermittent and sinking streams. The most common method used to study underground hydrological connections in karst is tracing tests. However, a more biologically oriented approach has been suggested: analysis of the genetic structure of aquatic organisms. Biological tracers can be sought among trogloxenes, that is, surface species that occasionally enter caves and groundwater. One such example is the fish genus Phoxinus, which exhibits high genetic diversity and complex phylogeography in the Balkan Peninsula. In the north-western Dinaric Karst, the complex hydrological network was digitalized in 2020. Contemporaneously, Phoxinus lumaireul populations in the Slovenian Dinaric Karst were intensively sampled and analysed for fragments of two mitochondrial genes and one nuclear gene. The derived phylogeographic structure and data on hydrological connections were compared to evaluate support for three alternative scenarios: The genetic structure (1) is a consequence of the ongoing geneflow through underground connections, (2) reflects a previous hydrological network or (3) is an outcome of anthropogenic translocations. The results suggest that the first two scenarios seem to have played a major role, while the third has not had profound effects on the genetic composition. Comparison between the genetic structure of Slovenian Dinaric Karst sampling sites and that of hydrologically isolated reference sampling sites indicated a greater genetic connectivity in the former. Moreover, the range of Adriatic (1a) and Black Sea (1c) haplotypes does not correspond to the Adriatic–Black Sea basin divide but is shifted northwards.

Keywords

ribe;Proxinus lumaireul;pisanec;genetika;paleohidrologija;dinarski kras;

Data

Language:	English
Year of publishing:	2022
Typology:	1.01 - Original Scientific Article
Organization:	UL BF - Biotechnical Faculty
UDC:	597.2/.5
COBISS:	115342083
ISSN:	1936-0592
Views:	14
Downloads:	6
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	Slovenian
Secondary keywords:	ribe;Proxinus lumaireul;pisanec;genetika;paleohidrologija;dinarski kras;
Type (COBISS):	Article
Pages:	str. 1-22
Volume:	ǂno. ǂ6
Issue:	ǂe ǂ2449
Chronology:	2022
DOI:	10.1002/eco.2449
ID:	16716383