Past and present of and perspectives for the Danube huchen, Hucho hucho (L.), in the Danube basin

Witkowski, Andrzej; Bajić, Aleksandar; Treer, Tomislav; Hegediš, Aleksandar; Marić, Saša; Šprem, Nikica; Piria, Marina; Kapusta, Andrzej

doi:10.2478/aopf-2013-0010

Cited by 19 publications

(22 citation statements)

References 26 publications

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“…European huchen is listed in annex II and annex V of the European Fauna Flora Habitat (FFH) directive 92/43/EWG and is considered as an endangered species with respect to its global distribution (IUCN 2013), including Poland (PRDBoA 2002). In recent years the size of the European huchen populations has strongly declined through the effects of anthropogenic habitat alterations, such as: river regulation by constructing of dams and weirs, siltation of spawning ground, hydropower development as well as both industrial and agricultural pollution (Holcik 1990; Witkowski et al 2013a). In Austria, European huchen inhabit 10 % of their previous distribution, considering self-sustaining populations (Schmutz et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…European huchen are bred in artificial conditions for a fishery supplementation of the local populations. According to some authors, due to low natural reproduction success most of the wild populations of the European huchen depend on the stocking activities (Holcik 1995; Witkowski et al 2013a). In Poland European huchen occurs in Dunajec, Poprad, and San Rivers, where it is protected by a fishery supplementation and enacted rigorous fishing restrictions.…”

Section: Introductionmentioning

confidence: 99%

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Genetic analysis of four European huchen (Hucho hucho Linnaeus, 1758) broodstocks from Poland, Germany, Slovakia, and Ukraine: implication for conservation

et al. 2015

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Four broodstocks of European huchen (Hucho hucho) from: Poland, Germany, Slovakia, and Ukraine were investigated using ten microsatellite DNA loci. Microsatellite DNA analysis was successfully applied for the first time in the Polish broodstock of this fish species. The genetic variation and genetic distance between these broodstocks were evaluated. In addition, we examined the potential effects of a genetic bottleneck on the genetic variation of the broodstocks. The European huchen broodstocks exhibited moderate genetic diversity (PIC = 0.405–0.496 and I = 0.831–1.047) with the exception of German broodstock which presented higher genetic diversity (PIC = 0.590 and I = 1.254). Observed (Ho) and expected (He) heterozygosity across the investigated loci in all broodstocks ranged from 0.434 to 0.686 and from 0.452 to 0.650, respectively. Overall, the studied broodstocks were in Hardy-Weinberg equilibrium (HWE); however, from 8 to 42 % of the loci deviated from HWE in each stock. The Garza-Williamson index (M = 0.146–0.279) and values of the heterozygosity excess revealed a reduction of genetic variation in all studied broodstocks because of the founder or bottleneck effect. The analysis of genetic differentiation (Fst) and Nei’s genetic distance between pairs of broodstocks revealed that Polish and Ukrainian broodstocks of European huchen were characterized by the closest genetic distance. In contrast, the highest genetic divergence parameters (Fst and Nei’s distance) were observed among German, Slovak, and Ukrainian broodstocks.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic analysis of four European huchen (Hucho hucho Linnaeus, 1758) broodstocks from Poland, Germany, Slovakia, and Ukraine: implication for conservation

et al. 2015

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“…eu/references/1782/general). In recent years the distribution range of the species has dwindled and the population size has declined rapidly through doi: 10.17221/8599-CJAS the effects of anthropogenic habitat alterations, such as river regulation by constructing dams and weirs, siltation of spawning ground, hydropower development as well as both industrial and agricultural pollution (Witkowski et al 2013a). Additionally, the unique biological features make this fish species a popular target for anglers.…”

Section: Introductionmentioning

confidence: 99%

“…In order to supplement the local populations of European huchen, controlled reproduction is being in progress. According to some authors, due to low natural reproduction success a majority of the wild populations of the European huchen depends on the stocking activities (Witkowski et al 2013a). In Poland, European huchen inhabits the Dunajec, Poprad, and San Rivers, where it is protected by a fishery supplementation and enacted rigorous fishing restrictions.…”

Section: Introductionmentioning

confidence: 99%

Application of mtDNA markers for European huchen (Hucho hucho Linnaeus, 1758) management in Poland

Kucinski¹,

Fopp‐Bayat²,

Zivna³

et al. 2015

CZECH J ANIM SCI

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Four broodstocks of European huchen (Hucho hucho) from Poland, Germany, Slovakia, and Ukraine were investigated using five selected fragments of mtDNA. The mitochondrial DNA sequence analysis was successfully applied to the Polish and German broodstocks of European huchen for the first time. A very low haplotype (h = 0.097) and nucleotide (π = 0.00013) diversity across 3573 bases of mtDNA fragments (partial regions of NADH-1, ATPase 6, Cytochrome b, evidenced by three closely related mtDNA haplotypes were found. The analysis of pairwise genetic differentiation (Fst) displayed a statistically significant differentiation between German (clade A) and the rest of examined broodstocks (clade B), clustering them into two separate groups. Moreover, the applied mtDNA markers did not reveal any differences among fish from the clade B, suggesting that other markers should be used to display a deeper genetic background of the studied broodstocks. The two clusters of European huchen distinguished under the current study should be considered as distinct management units by managers, who may be tempted to transport brood fish or yearlings across the range of European huchen distribution. It means that stocking material and spawners of European huchen from the upper parts of the Danube River (Clade A) should not be mixed with those from the lower parts (Clade B). Moreover, for any supplementation of broodstocks in order to increase their genetic variability only the fishes within the described management units should be used.

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“…Before its downturn due to anthropogenic impact (Witkowski et al, 2013), H. hucho was one of the most popular fish in Romania for sport fishing as well as for food (Băcescu, 1947). Now, however, it is very rare and overfished, in part by illegal fishing, which implies that its protected status is not being respected in some cases.…”

Section: Introductionmentioning

confidence: 99%

<i>Hucho hucho</i> (Linnaeus, 1758): last natural viable population in the Eastern Carpathians – conservation elements

Curtean–Bănăduc¹,

Maric²,

GÁBOR³

et al. 2019

Turk J Zool

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There is great variation in the conservation status of the last habitats with long-term natural viable populations of the salmon species Hucho hucho in Maramureş Mountains Nature Park, Eastern Carpathians (Romania). According to the specific guidelines for Natura 2000, 42.11% are in good conservation status, 31.57% are of average status, and 26.32% are in a partially degraded condition. In this study area, 6 main risk elements were identified related to human impact on the environment: poaching, minor riverbed morphodynamic changes, liquid and solid natural flow disruption, habitat fragmentation leading to isolation of fish populations, organic and mining pollution, and destruction of riparian tree and shrub vegetation. All of them have contributed to the decrease of H. hucho distribution in the study area to about 50% of the previous local range. Individuals of this species were recorded in only 21 of the 370 sampling stations.

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Past and present of and perspectives for the Danube huchen, Hucho hucho (L.), in the Danube basin

Cited by 19 publications

References 26 publications

Genetic analysis of four European huchen (Hucho hucho Linnaeus, 1758) broodstocks from Poland, Germany, Slovakia, and Ukraine: implication for conservation

Genetic analysis of four European huchen (Hucho hucho Linnaeus, 1758) broodstocks from Poland, Germany, Slovakia, and Ukraine: implication for conservation

Application of mtDNA markers for European huchen (Hucho hucho Linnaeus, 1758) management in Poland

<i>Hucho hucho</i> (Linnaeus, 1758): last natural viable population in the Eastern Carpathians – conservation elements

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