Abundance of Cottus poecilopus is influenced by O2 saturation, food density and Salmo trutta in three tributaries of the Rožnovská Bečva River, Czech Republic

2014 ◽  
Vol 86 (2) ◽  
pp. 805-811 ◽  
Author(s):  
R. Baran ◽  
J. Kubecka ◽  
M. Kubín ◽  
B. Lojkásek ◽  
T. Mrkvička ◽  
...  
Keyword(s):  
Czech Republic ◽  
Salmo Trutta ◽  
Food Density ◽  
Cottus Poecilopus

scholarly journals Assessment of polycyclic aromatic hydrocarbon contamination of the Bílina River (Czech Republic) using passive water samplers and fish biliary metabolites

2011 ◽  
Vol 80 (4) ◽  
pp. 353-357 ◽  
Author(s):  
Jana Blahová ◽  
Lucie Schandlová ◽  
Roman Grabic ◽  
Ganna Fedorová ◽  
Tomáš Randák ◽  
...  
Keyword(s):  
Czech Republic ◽  
Polycyclic Aromatic Hydrocarbon ◽  
Aromatic Hydrocarbon ◽  
Aquatic Ecosystem ◽  
Salmo Trutta ◽  
Passive Samplers ◽  
Hydrocarbon Contamination ◽  
Polycyclic Aromatic ◽  
Bílina River ◽  
Biliary Metabolites

The aim of the study was to assess polycyclic aromatic hydrocarbon (PAH) contamination on the Bílina River (the Czech Republic) by measurement of three PAH biliary metabolites in fish and 16 PAHs in passive samplers. A total of sixty-one fish were collected; the indicator species were chub (Leuciscus cephalus L.; n = 25), roach (Rutilus rutilus L.; n = 17) and brown trout (Salmo trutta m. fario L.; n = 19). Three biliary PAH metabolites were measured: 1-hydroxypyrene (1-OHP), 2-naphtol, and 1-hydroxyphenanthrene, but only 1-OHP was detected in all fish. The highest median value of 32.3 ng·mg-1of 1-OHP was found at Ústí nad Labem, while the lowest median value of 27.6 ng·mg-1was found in the control site, Březenec. No significant differences (P < 0.05) among the sites were found. The highest concentration of PAH was detected in Litvínov-Záluží (172.0 ng·l-1) and the lowest concentration (7.9 ng·l-1) was detected in Březenec. A positive, but non-significant correlation (rs = 0.8) was confirmed between biliary 1-OHP and total PAH in passive samplers. These results indicate the highest pollution in the middle stretches of the Bílina River, especially at Litvínov-Záluží. We confirmed 1-OHP as the most prevalent PAH biliary metabolite in fish that could be used as a biomarker for assessment of PAH pollution of the aquatic ecosystem. The main importance of the present study is in the combination of biochemical and chemical monitoring that provides complex evaluation of aquatic environment contamination. It was the first study on the Bílina River, in which the assessment of PAH contamination in the aquatic ecosystem was realized using combination of biotic and abiotic monitoring.

Beaver impact on stream fish life histories: the role of landscape and local attributes

2014 ◽  
Vol 71 (11) ◽  
pp. 1603-1615 ◽  
Author(s):  
Aneta Bylak ◽  
Krzysztof Kukuła ◽  
Józef Mitka
Keyword(s):  
Life History ◽  
Life Histories ◽  
Salmo Trutta ◽  
Fish Assemblages ◽  
Stream Fish ◽  
Beaver Ponds ◽  
Eurasian Beaver ◽  
Brown Trout Salmo Trutta ◽  
Cottus Poecilopus ◽  
Stream Fish Assemblages

The Eurasian beaver (Castor fiber) has been reintroduced into the Carpathian Mountains and has once again become an important factor for modifying streams. Forty-three sampling sites were compared with 10 reference sites in streams not settled by beavers. Models related to the impacts of beavers on various fish life history stages and a model presenting attributes influencing the ichthyofauna structure in streams with and without beavers were generated. Significant differences in the fish species composition were found between beaver ponds versus the running sections of streams. The changes associated with pond aging caused decrease of Siberian bullhead (Cottus poecilopus) density. For brown trout (Salmo trutta), beaver ponds were the only location where large individuals were found, while the upstream parts of the beaver complexes provided spawning habitat and an area for fry growth. Common minnow (Phoxinus phoxinus) and stone loach (Barbatula barbatula) had higher density in ponds than in streams. The decisive factors for the ichthyofauna in the mountain streams settled by beavers were local attributes related to beaver activity. Our results illustrate interactions among beaver, landscape context, and fish life history in influencing the response of the stream fish assemblages to beaver recolonization. It also helps answer the question of how Eurasian beaver influence stream fish assemblages, at a much larger scale than previous studies.

scholarly journals Biochemical markers for the assessment of aquatic environment contamination

2008 ◽  
Vol 1 (2) ◽  
pp. 169-181 ◽  
Author(s):  
Marcela Havelková ◽  
Tomáš Randák ◽  
Jana Blahová ◽  
Iveta Slatinská ◽  
Zdeňka Svobodová
Keyword(s):  
Czech Republic ◽  
Aquatic Environment ◽  
Biochemical Markers ◽  
Salmo Trutta ◽  
Chemical Analyses ◽  
Glutathione S Transferase ◽  
The Czech Republic ◽  
Environment Contamination ◽  
River Elbe

Biochemical markers for the assessment of aquatic environment contaminationThe need for assessment of aquatic ecosystem contamination and of its impact on water dwelling organisms was developed in response to rising aquatic environmental pollution. In this field study, liver enzymes of phase I and phase II of xenobiotic transformation, namely cytochrome P450, ethoxyresorufin-O-deethylase, glutathione-S-transferase and tripeptide glutathione were used to assess the contamination of the aquatic environment at different rivers in the Czech Republic. The indicator species selected was the male chub (Leuciscus cephalusL.) and male brown trout (Salmo trutta fario). Chemical analyses included also the assessment of the most important inductors of previously mentioned biochemical markers. The major inductors of monitored biomarkers are industrial contaminants which belong to a large group of organic pollutants (PCB, PAH, PCDD/F, DDT, HCH, HCB and OCS), persistent in the environment. Four different groups of river basins were assessed: the River Tichá Orlice and its tributary the Kralický brook; important tributaries of the River Elbe (the rivers Orlice, Chrudimka, Cidlina, Jizera, Vltava, Ohře and Bílina); major rivers in the Czech Republic (the rivers Lužnice, Otava, Sázava, Berounka, Vltava, Labe, Ohře, Svratka, Dyje, Morava and Odra) and the River Vltava. The use of the biochemical markers together with chemical analyses seems to be an effective way to monitor the quality of aquatic environment.

Niche overlap between young brown trout (Salmo trutta) and Siberian sculpin (Cottus poecilopus) in a subalpine Norwegian river

Hydrobiologia ◽  
2004 ◽  
Vol 521 (1-3) ◽  
pp. 117-125 ◽  
Author(s):  
Trygve Hesthagen ◽  
Randi Saksgård ◽  
Ola Hegge ◽  
Børre K. Dervo ◽  
Jostein Skurdal
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Niche Overlap ◽  
Brown Trout Salmo Trutta ◽  
Cottus Poecilopus

scholarly journals Health Surveillance of Wild Brown Trout (Salmo trutta fario) in the Czech Republic Revealed a Coexistence of Proliferative Kidney Disease and Piscine Orthoreovirus-3 Infection

Pathogens ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 604 ◽  
Author(s):  
Ľubomír Pojezdal ◽  
Mikolaj Adamek ◽  
Eva Syrová ◽  
Dieter Steinhagen ◽  
Hana Minářová ◽  
...  
Keyword(s):  
Czech Republic ◽  
Kidney Disease ◽  
Brown Trout ◽  
Salmo Trutta ◽  
Infectious Pancreatic Necrosis Virus ◽  
The Czech Republic ◽  
Proliferative Kidney Disease ◽  
Brown Trout Salmo Trutta ◽  
Tetracapsuloides Bryosalmonae ◽  
Salmo Trutta Fario

The population of brown trout (Salmo trutta fario) in continental Europe is on the decline, with infectious diseases confirmed as one of the causative factors. However, no data on the epizootiological situation of wild fish in the Czech Republic are currently available. In this study, brown trout (n = 260) from eight rivers were examined for the presence of viral and parasitical pathogens. Salmonid alphavirus-2, infectious pancreatic necrosis virus, piscine novirhabdovirus (VHSV) and salmonid novirhabdovirus (IHNV) were not detected using PCR. Cell culturing showed no viruses as well, and serological analysis of 110 sera did not detect any specific antibodies against VHSV or IHNV. Fish from two rivers were positive for the presence of piscine orthoreovirus-3 (PRV-3), subtype PRV-3b. However, none of the PRV-3-positive fish showed gross pathologies typically associated with PRV infections. By far the most widespread pathogen was Tetracapsuloides bryosalmonae which was confirmed in each of the examined locations, with a prevalence of up to 65% and 100%, as established by immunohistochemistry and PCR, respectively. Furthermore, up to 43.8% of fish showed signs of proliferative kidney disease caused by T. bryosalmonae, suggesting that this parasite is a main health challenge for brown trout in the Czech Republic.

Age and growth of Siberian sculpin (Cottus poecilopus) and young brown trout (Salmo trutta) in a subalpine Norwegian river

Hydrobiologia ◽  
2004 ◽  
Vol 521 (1-3) ◽  
pp. 107-115 ◽  
Author(s):  
Trygve Hesthagen ◽  
Ola Hegge ◽  
Jostein Skurdal ◽  
Børre K. Dervo
Keyword(s):  
Brown Trout ◽  
Salmo Trutta ◽  
Age And Growth ◽  
Brown Trout Salmo Trutta ◽  
Cottus Poecilopus

Vertical Distribution of Cottus poecilopus Heckel, 1837 in Streams of Tatra National Park in Poland

2017 ◽  
Author(s):  
Krzysztof Kozłowski ◽  
Piotr Dynowski ◽  
Jacek Kozłowski ◽  
Anna Zróbek-Sokolnik ◽  
Konrad Wolter ◽  
...  
Keyword(s):  
Vertical Distribution ◽  
Sea Level ◽  
National Park ◽  
Salmo Trutta ◽  
Salvelinus Fontinalis ◽  
Cottus Gobio ◽  
Bottom Substrate ◽  
Tatra National Park ◽  
Cottus Poecilopus ◽  
Gps Device

The aim of the study was to determine the prevalence of Cottus poecilopus in the main streams of the Tatra National Park in Poland. Fishing research was conducted within the summer and in the autumn of 2014 for fourteen streams. The catches were made with pulse fishing device (IUP-24) wading up stream. During fishing caught fishes have been characterized and habitat has been characterized by noting the speed of the current, the presence of obstacles and hiding places for fish, width, type and size of the bottom substrate, the presence of wood and shade. The beginning and end of each transect was described by the geographic coordinates using a Garmin GPS device. Based on the geographical coordinates the project was created in GIS (using ArcMap software 9.3.1) and determined the amount of occurrence of fish above sea level. In the course of fishing three species of fish were found: Cottus poecilopus, Salmo trutta m. fario and Salvelinus fontinalis. In the studied streams Cottus gobio was not found. The most numerous Cottus poecilopus were represented, a total of 485 individuals in 12 streams. Stream Chochołowski Potok (1077.3 m above sea level) was the highest position where the genre occured.

scholarly journals Ichthyocenosis of the Podolský Brook spring section in the Hrubý Jeseník mountains (Upper River Odra basin) within the context of the presence of fish predators

2019 ◽  
Vol 68 (3) ◽  
pp. 179-187
Author(s):  
Bohumír Lojkásek ◽  
Stanislav Lusk ◽  
Jiří Mlčoušek
Keyword(s):  
Salmo Trutta ◽  
Fish Population ◽  
Point Of View ◽  
Fish Populations ◽  
Anthropogenic Pressure ◽  
Natural Conditions ◽  
Water Flows ◽  
Fish Predators ◽  
Population Structures ◽  
Cottus Poecilopus

Abstract The study summarises results of the ichthyologic research of the Podolský and Stříbrný brooks in Hrubý Jeseník. The research was organised for the purpose of finding the actual situation in the fish settlements in the sections of interest and to make suggestions for their further management benefiting the original fish communities. The results have shown that there is the community of water organisms with naturally reproducing Cottus poecilopus and Salmo trutta in both partly adjusted water flows which have not been restocked by man since 1996. The facts found within the research suggest that the biologically correct way for the further development of fish populations in the Podolský and Stříbrný brooks may be the maintenance of the existing natural conditions while no local adjustments of the flow beds along roads should be excluded. The research results have proved that the existing natural conditions and the very limited anthropogenic pressure put on the water biocenoses have been the decisive factors during the formation of the now existing fish population structures which can be assessed as good from the ecological point of view. Because of that we have recommended to the manager of the water flows neither interfering in the development of the current fish populations nor restocking any fishes. We consider the finding that the age structure and the high numbers of Salmo trutta and Cottus poecilopus have been, in the given situations, the indicators of their populations’ ability, even at the sympatric presence of Lutra lutra and Ciconia nigra, resistant against the predators’ pressure, as very important.

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