Haplotype (mtDNA) diversity of brown trout <i>Salmo trutta</i> in tributaries of the Austrian Danube: massive introgression of Atlantic basin fish — by man or nature?

Weiss, Steven; Schlötterer, Christian; Waidbacher, Herwig; Jungwirth, M.

doi:10.1046/j.1365-294x.2001.01261.x

Cited by 74 publications

(118 citation statements)

References 23 publications

Supporting

Mentioning

112

Contrasting

Unclassified

Order By: Relevance

“…In the laboratory we investigated glochidia prevalence and host choice by exposing three fish taxa originating from different geographical regions to mussel larvae. By selecting nonnative hosts for the experiments we aim to address the effects of replacing indigenous fish populations by Atlantic hatchery strains (Weiss et al 2001). The aim of (Kapfer et al 2012 the present study was to enlarge our present knowledge of the microhabitat preferences and the parasite-host relationships which provide a basis for both the protection of remaining stocks and artificial breeding programs of the freshwater pearl mussel.…”

Section: Introductionmentioning

confidence: 99%

Habitat traits, population structure and host specificity of the freshwater pearl mussel Margaritifera margaritifera in the Waldaist River (Upper Austria)

et al. 2013

View full text Add to dashboard Cite

In European streams and rivers, the freshwater pearl mussel (Margaritifera margaritifera L., 1758) faces extinction. This is also true for the Waldaist River, with 20,000 specimens recorded in the early 1990s then Austria's most important pearl mussel river. Nowadays, there is only a single 320 m stretch with noteworthy mussel densities. During an in-depth survey of this river stretch in 2010, we detected a total of 2,774 specimens. Mussel microhabitats were confined to patches of sand and fine gravel (psammal and akal) at run sections of the river, stabilized by large boulders. Pearl mussels avoided large accumulations of fine sediments. Typically situated at undercut slopes, preferred microhabitats were 0.25-0.50 m deep at baseflow with current velocities (at 40% depth) of 0.2-0.6 m s −1 . A comparison of the present stock with data from 1997 revealed a rapid decline in mussel density down to 27%. We also noticed strongly reduced growth and a high mortality of medium age classes. Juvenile mussels were completely lacking. With respect to host specificity in terms of glochidia survival, the brook char Salvelinus fontinalis (Mitchill, 1814), a suitable host in North America, shed glochidia within eight days. In the brown trout Salmo trutta L., 1758, two strains were investigated. Glochidia survival, growth and prevalence were significantly higher in the Danish than in the Austrian hatchery strain.

show abstract

Section: Introductionmentioning

confidence: 99%

Habitat traits, population structure and host specificity of the freshwater pearl mussel Margaritifera margaritifera in the Waldaist River (Upper Austria)

et al. 2013

View full text Add to dashboard Cite

show abstract

“…On the other hand, Bardakci et al (2006) supposed pre-Pleistocene isolation and diversification of the Adriatic, Danubian and Tigris lineages in Turkey. A deep divergence of brown trout within the Black Sea basin has also been indicated (Weiss et al 2001;Duftner et al 2003;Bardakci et al 2006;Marić et al 2006;Turan et al 2009). These findings suggest that beyond the Mediterranean region, the Black Sea basin have had a very important role in the formation of the brown trout diversity.…”

Section: Introductionmentioning

confidence: 83%

“…2) indicated six haplotype groups: Atlantic, Adriatic, Mediterranean, marmoratus and two groups from the PontoCaspian and Aral Sea area. The first of the PontoCaspian groups, further referred to as 'Danubian group' (DaDA), included all haplotypes from the Cerni Iskar River, the Džepska River (except for one haplotype), the Vidima River, as well as almost all published Danubian lineage haplotypes from Austria (Weiss et al 2001;Duftner et al 2003), Serbia (Marić et al 2006), Switzer- …”

Section: Mitochondrial Dnamentioning

confidence: 99%

“…The hybridisation of local populations with non-indigenous brown trout, mostly of Atlantic origin has been widely observed (e.g., García-Marín et al 1998;Hansen 2002;Sanz et al 2006;Thaulow et al 2013). Extensive hybridization between the Atlantic and Danubian mtDNA lineages due to the repeated transfers and long-term stocking have been reported in the upper/middle Danube River basin (Weiss et al 2001;Duftner et al 2003;Kohout et al 2012). Stocking activities and their impacts on genetic structure has been reported also in eastern Balkans.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Genetic diversity and phylogenetic origin of brown trout Salmo trutta populations in eastern Balkans

et al. 2013

View full text Add to dashboard Cite

The study focuses on the phylogenetic origin and genetic diversity of brown trout in the eastern part of the Balkan Peninsula. It further aims to reveal the impact of human-mediated transfers and stocking with non-indigenous trout on the populations in this area. For these purposes, mtDNA control region and microsatellite variation of 204 individuals from 16 populations were analysed. The results indicate that mtDNA haplotypes from the lower Danube basin and southern Black Sea basins differ substantially from a subclade of the Danubian lineage consisting of haplotypes found so far in the most of the Danube basin and in the Caspian and Aral Sea basins. Considering also the results of demographic analyses, this study evidences a complex evolutionary history of brown trout in the southern and western parts of the Black Sea basin. In the Aegean Sea basin, a high frequency of the central haplotype of Adriatic mtDNA lineage has been found. The other Adriatic lineage haplotypes found in this basin differ from the central haplotype by one mutational step only, indicating a recent evolution of the Adriatic lineage in the Aegean Sea basin. Substantial genetic differentiation among populations and basins was revealed. The hybridization with Atlantic brown trout was indicated in both sea basins, but especially in the Danube basin. Compared to other European regions, it can be inferred that the introgression of exogenous brown trout in the eastern Balkan populations is rather low.

show abstract

“…There is no evidence of their natural occurrence south and southeast of the Alps; regardless, they predominate as native in the headwaters of the upper Danube in Bavaria and in numerous drainages of the Austrian Danube. One possible explanation for the presence of At haplotypes could be uncontrolled stocking with allochthonous, hatchery-reared brown trout of the Atlantic clade, which were introduced in this way into many streams and rivers throughout the Balkans (Marić et al, 2006;Jadan et al, 2010;Simonović et al, 2015) and Europe (Largiadèr and Scholl, 1996;Osinov and Bernatchez, 1996;Hansen et al, 2000;Weiss et al, 2000Weiss et al, , 2001. Two specimens of the same H3 haplotype were recorded in 2010 in the Danube riverbed by Marić et al (2012) near the city of Veliko Gradište at river kilometer 1059.…”

Section: Discussionmentioning

confidence: 99%

Haplotype diversity of brown trout Salmo trutta (L.) in the broader Iron Gate area

Marić¹,

Škraba²,

Nikolić³

et al. 2016

Turk J Zool

View full text Add to dashboard Cite

Mitochondrial DNA (mtDNA) haplotypes of brown trout (Salmo trutta L.) populations in the area of Djerdap National Park were analyzed in order to determine their phylogeographic statuses. Sequencing the control region of mtDNA in 66 specimens from 9 streams in the broader Iron Gate area revealed that 7 brown trout from those streams carried haplotypes of Atlantic lineage, while the remaining 59 fish were of Danubian lineage, either of Da23c or Da1 haplotypes. Four streams were inhabited by populations of the indigenous Da23c mtDNA haplotype, while the population in one stream had the Da1 haplotype. In the remaining 4 streams, brown trout of exclusively Atlantic lineage were present in 3, while those of the Da23c haplotype were additionally present in the fourth. The significant fixation index Fst in all populations, caused by a significantly large proportion of the among-population component of variance, revealed the fixation of particular haplotypes in the majority of populations. The size of a particular stream determines native brown trout abundance and limits their suitability for restorative purposes.

show abstract

Haplotype (mtDNA) diversity of brown trout Salmo trutta in tributaries of the Austrian Danube: massive introgression of Atlantic basin fish — by man or nature?

Cited by 74 publications

References 23 publications

Habitat traits, population structure and host specificity of the freshwater pearl mussel Margaritifera margaritifera in the Waldaist River (Upper Austria)

Habitat traits, population structure and host specificity of the freshwater pearl mussel Margaritifera margaritifera in the Waldaist River (Upper Austria)

Genetic diversity and phylogenetic origin of brown trout Salmo trutta populations in eastern Balkans

Haplotype diversity of brown trout Salmo trutta (L.) in the broader Iron Gate area

Contact Info

Product

Resources

About