Austrian gudgeons of the genusGobio(Teleostei: Gobionidae): A mixture of divergent lineages

Abstract

Gudgeons of the genus Gobio are small Eurasian fishes whose systematics, taxonomy, and phylogenetic relationships have been the matter of a long‐standing debate. Two species, Gobio gobio and G. obtusirostris have been reported for Austria, with a potential hybrid zone in the upper Danube. Phylogenetic and phylogeographic analysis of mitochondrial cytochrome oxidase subunit I and control region sequences, as well as nuclear ribosomal protein S7 sequences, however, shows that the proposed hybrid zone is not restricted to the upper Danube, but spans large parts of the Austrian Danube system (upper Danube, Rába & Mur systems). Moreover, our data show that also a third lineage, closely related to species from the southern Balkan, contributed to the gene pool of Austrian Gobio. Patterns of intra‐lineage genetic diversity indicate that the distinct Gobio lineages expanded their distribution recently (most likely post‐glacially) to come into secondary contact and hybridize in the Danube system.

Increased spatial resolution of sampling in the Carpathian basin helps to understand the phylogeny of central European stream-dwelling gudgeons

“…The available phylogenetically-verified Gobio distribution data [17,37,38] from the region is presented with our results in Fig. 1.…”

“…Moreover the mtCR was the most widely employed locus in previous studies dealing with the Gobio stocks living in this area [17,37,38], therefore this locus was the best suited for our goals. A 711 bp sequence of mtCR was amplified by polymerase chain reaction (PCR) using the primers CR159 (5′-CCCAAAGCAAGTACTA ACGTC-3′) and CR851 (5′-TGCGATGGCTAACTCA TAC-3′) [17].…”

“…Sources of distribution data on subfigure a: https://www.iucnredlist.org/species/135651/4171068, and: https://www.iucnredlist.org/species/135501/4133848. The certain localities and the presumed distribution areas of the Gobio lineages indicated from the Middle Danubian area were drawn using the information provided by Mendel et al [17], Takács et al [37], Zangl et al [38]. Note: due to the relatively small scale of the map the sample sites are only approximate positions, and if more lineages appeared at the same sites the icons were slightly shifted basin [37].…”

Testing the Applicability of MALDI-TOF MS as an Alternative Stock Identification Method in a Cryptic Species Complex

“…The results of novel investigations [ 56 , 57 ] altered the taxonomy of this group. From the Carpathian basin, five genetically distinct groups were discovered [ 47 , 57 , 58 ]. From the valid species the Gobio carpathicus Vladykov, 1925, G. gobio are sporadic in Hungarian streams, the Gobio obtusirostris Cuvier and Valenciennes, 1842 is the dominant gudgeon species in the NW region of the Carpathian basin.…”

First data on the structure of the vertebral column in Gobio and Romanogobio species (Actinopterygii, Cypriniformes, Gobionidae) from Ohrid Lake and the Vardar River basin

“…The great variability in European gudgeon species that makes their identification difficult perpetuates the scientific interest for resolving of their taxonomy, morphological and genetic diversity, and phylogenetic relations between them (Freyhof et al 2000;Kottelat and Persat 2005;Mendel et al 2008Mendel et al , 2012Takács 2012;Nowak et al 2013Nowak et al , 2014Szlachciak and Nowak 2015;Zangl et al 2020). The structure of the vertebral column offers a powerful tool in resolving taxonomic distinction between gudgeon species (Naseka 1996(Naseka , 2001Talabishka 2014).…”