Genetic characterisation of European mudminnow (Umbra krameri) populations from the Sava River system

Abstract

Two new populations of the European mudminnow (Umbra krameri Walbaum, 1792) were discovered in the Sava River system, one in its middle part (Bosnia and Herzegovina) and the other in a tributary to the Kupa River (Croatia). The Croatian population is the most upstream mudminnow discovery in the Sava River system known to date. The genetic structure of the newly recorded mudminnow populations was examined using mitochondrial DNA and microsatellite loci. By adding these new populations to the analysis of the population genetic structure of mudminnow from the Sava River system, previously unresolved relationships between the populations from the upper and the lower Sava were clarified: the middle Sava populations were shown to be well outside the hybridisation zone with the Danubian clade, meaning the upstream boundary of this zone is confined to the lower Sava. The results also suggest that mudminnow populations in the Sava River system are less isolated than previously believed. Namely, intermediate gene-flow was detected when comparing the uppermost Sava population with the lower Sava populations. Taking these results into account, appropriate guidelines are proposed to preserve mudminnow populations from the Sava River system.

Quaternary geomorphological and climatic changes associated with the diversification of Iberian freshwater fishes: The case of the genus Cobitis (Cypriniformes, Cobitidae)

“…The population structure of C . vettonica based on the mitochondrial data differed from the main pattern observed in other European freshwater fishes, which is that gene flow within the same basin is greater than among different basins (e.g., Buj et al, 2017 ; Corral‐Lou et al, 2019 ; Marić et al, 2017 , 2019 ; Seifertová et al, 2012 ; Wetjen et al, 2020 ). Specifically, for C .…”

“…Several dispersal and vicariant events were also detected within V1 and V3 (Figure 9). freshwater fishes, which is that gene flow within the same basin is greater than among different basins (e.g., Buj et al, 2017;Corral-Lou et al, 2019;Marić et al, 2017Marić et al, , 2019Seifertová et al, 2012;Wetjen et al, 2020). Specifically, for C. vettonica, genetic differentiation between populations from the same basin (Tagus Basin) is greater than between populations from the two main basins (Duero and Tagus basins).…”

More common than previously considered: New data on the distribution of Umbra krameri in the Jiu River floodplain, Romania

“…Even in north‐western Romania, the populations are few compared to the number of investigated localities (Cupșa et al., 2020; Telcean et al., 2014). Also, in other countries the number of this species recent distribution records was low (Jelkić et al., 2019; Marić et al., 2019; Sekulić et al., 2013). Unlike this, in JRC we investigated only a few habitats, in a region with many favorable habitats.…”

Large Branchiopods in Small Water Bodies: A Case Study of the Ramsar Site “Bardača Wetland” (NW Republic of Srpska, Bosnia and Herzegovina)

“…They include six allochthonous species, of which Prussian carp (Carassius gibelio (Bloch, 1782)) and brown bullhead (Ameiurus nebulosus (Lesueur, 1819)) are dominant fish species in the natural watercourses of this area [33]. Recently, European mudminnow (Umbra krameri Walbaum, 1792), one of the rarest fish species in Bosnia and Herzegovina, was also recorded in the Matura River and its tributaries [34]. It is endemic to the Danube and Dniester basins, but also the only indigenous member of the Umbridae family in Europe [35].…”