Diversity of brown trout Salmo cf. trutta in the River Danube basin of Western Balkans as assessed from the structure of their mitochondrial Control Region haplotypes

Simonović, Predrag; Marić, Ana; Jurlina, Dubravka Škraba; Nikolić, Vera; Piria, Marina; Šprem, Nikica; Mrdak, Danilo; Milošević, Dragana; Bećiraj, Azra; Dekić, Radoslav; Povž, Meta

doi:10.1134/s0032945217040154

Cited by 15 publications

(14 citation statements)

References 42 publications

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“…Introduction of domesticated, hatchery-reared Salmo sp. (commonly of AT haplogroup, hence Salmo trutta) was detected throughout the western Balkans (Simonović et al 2017), where its invasive effect of introgression into the native gene pool of recipient, native trout stocks of the DA lineage, was revealed (Marić et al 2012), and the risk of their invasiveness had already been assessed as high in Serbia (Simonović et al 2015). Fortunately, the situation concerning the impact of S. trutta on S. farioides in the Mrtvica River seems somewhat different.…”

Section: Discussionmentioning

confidence: 99%

Effect of the introgression of Atlantic brown trout, Salmo trutta, into Adriatic trout, Salmo farioides in a stream at the drainage area of the Adriatic Sea basin of Montenegro

Jurlina¹,

Marić²,

Karanović³

et al. 2018

Acta Ichthyol. Piscat.

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Background. The diversity of wild trout stocks in Montenegro is compromised by insufficiently controlled stocking. Adriatic and Mediterranean areas show a high degree of endemism of the salmonid species, with numerous native Salmo taxa described. The invasive effect of brown trout, Salmo trutta Linnaeus, 1758, of the Atlantic haplogroup on the endemic Adriatic trout, Salmo farioides Karaman, 1938, in the drainage area of the Adriatic Sea basin is lower compared to the effect inflicted by S. trutta has on Salmo labrax Pallas, 1814 of the Danubian haplogroup. The presently reported study was intended to describe the genetic structure of the population of Adriatic trout, Salmo farioides, from the Mrtvica River, a right tributary of the Morača River, Montenegro, in order to get an insight into the spread of non-native strains and their introgression into the native Adriatic trout gene pool. Material and methods. Trout specimens sampled from the lower section of the Mrtvica River from 2004 to 2007, and from its upper section in the spring of 2014, were analysed for their mtDNA haplotypes. Nuclear DNA markers (microsatellites, LDH-C1* gene) were also included in genetic analyses since mtDNA is inherited only maternally. After statistical analyses, relations between individuals from the upper and lower Mrtvica River were reconstructed. Results. Using both LDH-C1* and seven microsatellite loci with several alleles exclusive to S. trutta, an introgression was detected only in the upper reaches of the Mrtvica River, where only stream-dwelling trout form occurs. In the lower reaches no introgression was detected at all, as revealed by the absence of both the Atlantic mitochondrial haplotype and microsatellite alleles exclusive to S. trutta. Conclusion. The allelic frequency at seven microsatellite loci of Salmo spp. from the two river sections revealed very different population structure, as a consequence of a low rate of gene flow between them. In addition to the physical barrier that prevents Salmo sp. from the lower Mrtvica River to migrate to the upper river section, it seems that the opportunity to mate with the large pool of conspecifics, including lake-dwelling S. farioides (i.e., Salmo cf. dentex), prevents Salmo trutta from surviving at the lower reach and spread to the rest of the Morača River and Lake Skadar systems.

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Section: Discussionmentioning

confidence: 99%

Effect of the introgression of Atlantic brown trout, Salmo trutta, into Adriatic trout, Salmo farioides in a stream at the drainage area of the Adriatic Sea basin of Montenegro

Jurlina¹,

Marić²,

Karanović³

et al. 2018

Acta Ichthyol. Piscat.

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“…Moreover, evolutionary histories of many freshwater taxa with the overlapping distribution ranges with P. lumaireul can be explained by this scenario e.g. the brown trout (Simonović et al, 2017), caddisflies (Previsić et al, 2009), Asellus aquaticus (Verovnik et al, 2005), the stone crayfish (Klobučar et al, 2013) and the white-clawed crayfish (Jelić et al, 2016).…”

Section: New Insights Into the Genetic Variability Of Phoxinus Lumaireulmentioning

confidence: 99%

“…The high level of diversity and complex phylogeography of species which co-exist with the Eurasian minnows in the Balkans (Klobučar et al, 2013;Buj et al, 2008;Mamos et al, 2016;Vitecek et al, 2017;Simonović et al, 2017), together with dynamic geology (Karamata, 2006), suggest that the "Balkan minnow" represents heterogeneous complex (Palandačić et al, 2015. In line with this, the aims of this research were to: (i) collect all available literature data on distribution of Phoxinus in Croatia and Bosnia and Herzegovina, and conduct targeted sampling for new and missing data, (ii) compare the compiled data in the light of recent molecular research Palandačić et al (2015Palandačić et al ( , 2017 and (iii) provide an insights of the present situation within the genus Phoxinus in Western Balkans, using new sequences of mitochondrial DNA obtained in the present study.…”

Section: Introductionmentioning

confidence: 99%

Distribution of Eurasian minnows (Phoxinus: Cypriniformes) in the Western Balkans

Vucić¹,

Jelić²,

Žutinić³

et al. 2018

Knowl. Manag. Aquat. Ecosyst.

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-The Eurasian minnows of the genus Phoxinus are small cyprinid species, widely distributed across Europe and Asia. Currently, there are at least 15 species in Phoxinus, with preliminary data suggesting more to be described. Despite the discernible increase in research integrating molecular phylogenetic approaches with traditional taxonomy and systematics, inter-and intraspecific relationships in the genus Phoxinus are still poorly known. The aims of this research were to: (i) compile data on the distribution of Phoxinus species in Croatia and Bosnia and Herzegovina from the sampling conducted by authors from 2006 to 2016 and from literature sources, and (ii) provide a detailed insight on distribution ranges of genetic clades and species of Phoxinus in the western Balkans. Additional 118 localities in Croatia and 8 locations in Bosnia and Herzegovina were added to already known 160 localities from the literature data. Molecular analyses of mitochondrial DNA indicate: (i) the presence of Phoxinus marsilii in Croatia (Drava drainage, the Papuk Mountain), around 260 km south of its known distribution range in Hungary, and (ii) an exceptional genetic variability of P. lumaireul in the Western Balkans.

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“…presented here was recently supplemented with a prominent insight into their diversity, assessed using molecular markers, both mitochondrial, [e.g., cytochrome b and control region (CR), i.e., the D-loop (Bernatchez et al, 1992;Bernatchez, 2001), and nuclear, e.g., LDH-C * and several microsatellite loci (Hamilton et al, 1989;Richard and Thorpe, 2001)]. The basic mapping of indigenous populations of nominal trout taxa accomplished using CR as a marker in the Adriatic Sea Basin assigned them to the Adriatic (AD), marmoratus (MA), and Danubian (DA) mtDNA lineages (Marić et al, 2006;Mrdak, 2011;Mrdak et al, 2012;Simonović et al, 2017b;Škraba Jurlina et al, 2018); those native to the Black Sea Basin belonged to the DA lineage (Marić et al, 2006;Mrdak, 2011;Tošić et al, 2014Tošić et al, , 2016Simonović et al, 2017b;Škraba et al, 2017), whereas in the Aegean Sea Basin, they belonged to the AD lineage (Marić et al, 2006(Marić et al, , 2017LoBrutto et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The adverse effects of small hydropower plants onto native trout populations in the sections of streams along the derivations are compensated through planned stocking, which perpetuates and augments the risk of introducing alien brown trout. This widely adopted stocking practice in trout stream management accompanied by the flow of money among fishery managers, trout fish farmers, and trout fishermen is the primary obstacle to effective conservation of indigenous and often unique native brown trout stocks (Simonović et al, 2017b), both in common fisheries (Simonović, 2019) and even in those situated in protected areas (Simonović et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Alternative Life-History in Native Trout (Salmo spp.) Suppresses the Invasive Effect of Alien Trout Strains Introduced Into Streams in the Western Part of the Balkans

et al. 2020

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The diversity of native trout fish Salmo spp. comprises a variety of nominal taxa in Serbia, Montenegro, and Bosnia and Herzegovina. Recent mapping of the resident trout populations detected the presence of brown trout Salmo trutta (sensu stricto) of the Atlantic (AT) mtDNA lineage introduced into populations of both tentative Danubian trout Salmo labrax and of tentative Adriatic trout Salmo farioides belonging to the Danubian (DA) and Adriatic (AD) mtDNA lineages, respectively. Introduction of the tentative Macedonian trout Salmo macedonicus of the AD lineage was also detected in a native population of the tentative S. labrax. In almost all recipient nonmigratory trout populations, a cross-breeding between native and introduced trout was detected by heterozygosity in either only the LDH-C nuclear locus or the LDH-C and specific microsatellite loci. The only exception was a population where both resident and migratory, lake-dwelling individuals of the tentative Adriatic trout spawned in a downstream section of a stream in Montenegro, as no microsatellite alleles of Atlantic brown trout that had been introduced upstream were detected. The occurrence of cross-breeding between Adriatic and brown trout was evident in the isolated, upstream section. It appears that migrating, lake-dwelling Adriatic trout in combination with their resident, stream-dwelling conspecifics suppress the introgression of genes from those situated upstream. In this regard, consideration should be given to the occurrence of the migratory brown trout in the Danube River at the broader Iron Gate Gorge area. They migrate in late summer and early fall from the Iron Gate One reservoir to the lower sections of tributaries devoid of any trout fish. However, some of these streams house very special native trout of the DA lineage in their short-extending upper sections. These native trout populations are, so far, still out of contact with the reservoir-dwelling trout. However, given the resilience of trout and their migratory life history, the outcome of this introduction could be deleterious for those native fish that are very precious in the conservation sense.

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Diversity of brown trout Salmo cf. trutta in the River Danube basin of Western Balkans as assessed from the structure of their mitochondrial Control Region haplotypes

Cited by 15 publications

References 42 publications

Effect of the introgression of Atlantic brown trout, Salmo trutta, into Adriatic trout, Salmo farioides in a stream at the drainage area of the Adriatic Sea basin of Montenegro

Effect of the introgression of Atlantic brown trout, Salmo trutta, into Adriatic trout, Salmo farioides in a stream at the drainage area of the Adriatic Sea basin of Montenegro

Distribution of Eurasian minnows (Phoxinus: Cypriniformes) in the Western Balkans

Alternative Life-History in Native Trout (Salmo spp.) Suppresses the Invasive Effect of Alien Trout Strains Introduced Into Streams in the Western Part of the Balkans

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