Article
Fisheries
Matti Kotakorpi, Mikko Olin, Jukka Ruuhijaervi, Katja Kulo, Jyrki Lappalainen
Summary: Understanding the movements of common fish species in large lakes is challenging for fisheries management. In a study conducted in Lake Vesijarvi, Finland, it was found that pikeperch, bream, and roach moved between different basins but rarely outside the tagging areas. Pikeperch had a higher recapture rate compared to the other two species. The tagging data provided valuable information for spatially explicit fisheries management.
FISHERIES MANAGEMENT AND ECOLOGY
(2023)
Article
Biology
Andrea Simkova, Kristina Civanova Krizova, Kristyna Voriskova, Lukas Vetesnik, Vojtech Bystry, Martin Demko
Summary: This study aimed to investigate the effects of hybridization on parasite infection by analyzing the transcriptome profiles of two fish species and their hybrid generations after experimental infection with the blood-feeding parasite Paradiplozoon homoion. The results showed that backcross hybrids were more infected than F1 hybrids and parental lines, with a higher number of differentially expressed genes (DEGs). The DEG analyses revealed the roles of heme binding, erythrocyte differentiation, and immunity-related processes in fish after infection by P. homoion. The study also found that two backcross generations shared some DEGs, indicating a potential consequence of hybrid breakdown. The findings suggest that hybrid generations exhibit different levels of parasite infection, with F1 hybrids being less parasitized and backcross hybrids being more parasitized than the parental species.
Article
Ecology
Emily R. Winter, Andrew M. Hindes, Steve Lane, J. Robert Britton
Summary: Studies show that the migratory behaviors of potamodromous fishes can vary significantly within barrier-free systems, with factors such as season and tidal phase playing a significant role in movement patterns. This study focused on the diversity of movement behavior in a lowland fish population, finding that the population consists of several distinct, semi-independent subpopulations that share space resources only during spawning periods. High phenotypic diversity in movement behaviors is maintained through connectivity in lowland freshwater systems.
FRESHWATER BIOLOGY
(2021)
Article
Environmental Sciences
Athamna Assila, Sahtout Fatiha, Heramza Karima, Bensouilah Mourad, Bouallag Chahinaise
Summary: Growth parameters are important for the exploitation of fisheries and can help develop sustainable exploitation strategies. A study on the growth of common bream revealed that females grow larger and exhibit positive allometry. The analysis was done using statistical software and data from 192 individuals collected in Algeria.
FRESENIUS ENVIRONMENTAL BULLETIN
(2022)
Article
Fisheries
Ondrej Slavik, Nikola Pfauserova, Marek Brabec, Jitka Kolarova, Daniel Cerveny, Pavel Horky
Summary: An active preference for higher temperatures within a physiological optimum benefits animal movement. The effect of temperature on fish migrations is dependent on the motivation behind the migration, with long-distance migrations being supported by increasing temperature. Short-distance migrations show no significant influence of temperature.
ECOLOGY OF FRESHWATER FISH
(2023)
Article
Ecology
Rachel E. Bowes, Joacim Naslund, Larry Greenberg, Eva Bergman
Summary: The study indicates that adding cobble substrate in a surface bypass does not effectively facilitate downstream movement of common roach. In fact, it may cause delays in passage through the channel. Fish exposed to cobble substrate showed avoidance behavior and tended to return upstream more often, resulting in delayed passage.
ECOLOGICAL ENGINEERING
(2021)
Article
Marine & Freshwater Biology
V. V. Stolbunova, Yu. V. Kodukhova
Summary: The divergence in body size of species is associated with changes in genome size and the rate of mtDNA evolution. During hybridization, these differences can lead to problems of compatibility and developmental anomalies in hybrids. This study focuses on the bream Abramis brama and the roach Rutilus rutilus, which differ in body and genome sizes. It is found that the paternal effect on body length inheritance is violated in hybrids, and a deviation in development affects the adaptation of hybrids. The study also explores the role of ribosomal and mitochondrial DNA in the inheritance of body length and highlights the significance of mitochondrial genes in this trait.
INLAND WATER BIOLOGY
(2023)
Article
Environmental Sciences
Nora Baberschke, Fabian Schaefer, Thomas Meinelt, Werner Kloas
Summary: Secondary salinization of freshwater ecosystems due to effluents from potash mining industry has led to significant biodiversity loss and reproductive failure in local fish species. Experimental investigation showed that high concentrations and imbalances of ions in the effluents negatively affected sperm motility, fertilization rate, egg size, and early development of native freshwater teleosts. The overall impact was more pronounced with the sum of high ion concentrations, indicating the need to reevaluate current and future ion thresholds.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Jovana Kostic-Vukovic, Stoimir Kolarevic, Margareta Kracun-Kolarevic, Zeljka Visnjic-Jeftic, Bozidar Raskovic, Vesna Poleksic, Zoran Gacic, Mirjana Lenhardt, Branka Vukovic-Gacic
Summary: This study conducted on common bream in the Danube River exposed to wastewater discharge in Serbia's capital examined concentrations of metals and metalloids, as well as histopathological alterations in different tissues. The research highlighted gills and liver as reliable organs for studying accumulation and histopathology, showcasing the faster reaction of gills to environmental changes. Common bream proves to be a good indicator of organism health in polluted environments.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Acoustics
Nina Maurer, Johannes Baltzer, Tobias Schaffeld, Andreas Ruser, Joseph G. Schnitzler, Ursula Siebert
Summary: This study investigates the impact of different sound pressure levels on the anti-predator behavior and auditory detection thresholds of common roach and sand goby. It shows that vessel slowdown can mitigate the effects on the auditory senses of sensitive fish, but does not have any mitigating effect on their noise-induced behavioral changes.
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
(2023)
Article
Marine & Freshwater Biology
N. I. Komova
Summary: Data shows that common roach with low relative fecundity have the lowest number of abdominal vertebrae. It is also found that fish with 17 abdominal vertebrae have significantly lower relative fecundity, while those with 16 caudal vertebrae and a total of 40 vertebrae in the spine have significantly higher fecundity.
INLAND WATER BIOLOGY
(2023)
Article
Marine & Freshwater Biology
G. Kh. Shcherbina
Summary: This study conducted in the fall of 2013 presents data on the bream forage base in areas of the Rybinsk Reservoir exposed to different levels of anthropogenic impact. A total of 21 invertebrate species are found in the food of bream, with chironomids and mollusks predominating. The feeding intensity of bream decreases in highly productive areas subjected to industrial pollution, leading to a reduction in fish fatness and body weight.
INLAND WATER BIOLOGY
(2021)
Article
Environmental Sciences
Dusan Nikolic, Stefan Skoric, Branislav Mickovic, Miroslav Nikcevic, Marija Smederevac-Lalic, Vesna Djikanovic
Summary: The accumulation of multiple heavy metal elements in the gills, liver, gonads, and muscle of European chub, Cactus roach, and pikeperch from Zlatar reservoir in Serbia was analyzed using ICP-OES. The results showed variations in the accumulation of heavy metals among different species, with European chub having the highest accumulation and pikeperch having the lowest. The health risks associated with consuming these fish were found to be low.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Marine & Freshwater Biology
T. B. Lapirova
Summary: This study presents data on the biochemical analysis of liver tissue in bream infected with trypanosomes from the Uglich Reservoir. The results indicate that the presence of parasites in the fish causes changes in various parameters, including total protein, immune complexes, glucose, and glycogen concentrations. The study also suggests that the liver plays an active role in the fish's response to the introduction of the parasite.
INLAND WATER BIOLOGY
(2022)
Article
Fisheries
Yu P. Tolmacheva, A. S. Sapozhnikov, S. Yu Petukhov
Summary: The study found that the proportion of anomalies in common roach from the Angara River tends to increase as the quality of surface waters degrades. The areas with chronic technogenic impact showed the highest frequency and diversity of phenodeviants.
JOURNAL OF ICHTHYOLOGY
(2021)
Article
Biodiversity Conservation
A. T. Souza, C. Argillier, P. Blabolil, V Ded, I Jaric, A. P. Monteoliva, N. Reynaud, F. Ribeiro, D. Ritterbusch, P. Sala, M. Smejkal, P. Volta, J. Kubecka
Summary: Climate is an important factor influencing the viability and invasion potential of common carp populations in European lakes, particularly under dry and warm conditions. Climate change may enhance the ability of common carp to establish and sustain populations in new areas.
BIOLOGICAL INVASIONS
(2022)
Article
Environmental Sciences
Daniel Barton, Marek Brabec, Zuzana Sajdlova, Allan T. Souza, Jindrich Duras, David Kortan, Petr Blabolil, Lukas Vejrik, Jan Kubecka, Marek Smejkal
Summary: The study found that hydropeaking has negative effects on fish detection at the spawning ground of rheophilic fish, including factors such as flow changes, water temperature, time of the day, and individual fish ID. Hydropeaking resulted in changes in spawning behavior of rheophilic fish, and it is recommended to reduce the impact of hydropeaking during the spawning season for conservation purposes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Fisheries
Marek Smejkal, Daniel Barton, Marek Brabec, Zuzana Sajdlova, Allan T. Souza, Karlos R. Moraes, Petr Blabolil, Lukas Vejrik, Jan Kubecka
Summary: Animal behaviour interacts with relationships within biota, and individual variation may impact behavioural research sampling efficiency. This study recorded fish behaviour during the reproductive season and sampled a fish population using passive and active methods. The results showed that males were more likely to be captured, and capture probability was related to different behavioural traits in males and females. This suggests the presence of behavioural-related bias in behavioural research.
FISHERIES RESEARCH
(2022)
Article
Parasitology
Masoud Nazarizadeh, Jiri Peterka, Jan Kubecka, Mojmir Vasek, Tomas Juza, Karlos Ribeiro de Moraes, Martin Cech, Michaela Holubova, Allan T. Souza, Petr Blabolil, Milan Muska, Lobsang Tsering, Daniel Barton, Milan Riha, Marek Smejkal, Michal Tuser, Lukas Vejrik, Jaroslava Frouzova, Ivan Jaric, Marie Prchalova, Ivana Vejrikova, Jan Stefka
Summary: In this study, the prevalence and population genetic structure of the tapeworm parasite Ligula intestinalis were investigated in five common cyprinoid species collected from six water bodies in the Czech Republic. The results revealed variation in prevalence rates among the fish species and identified specific genetic structures in the parasite populations. The study suggests that recent ecological differentiation and genetic diversity have influenced tapeworm populations at a fine evolutionary scale.
FOLIA PARASITOLOGICA
(2022)
Editorial Material
Fisheries
Robin DeBruyne, Edward Roseman, Martin Cech
Article
Environmental Sciences
Daniel Barton, Zuzana Sajdlova, Tomas Kolarik, Jan Kubecka, Jindrich Duras, David Kortan, Marek Smejkal
Summary: Rheophilic fishes are declining rapidly in number due to various habitat modifications and discharge regulations. Installing a flow deflector can mitigate the effects of discharge increases on a spawning ground, resulting in higher recruitment of rheophilic fishes.
RIVER RESEARCH AND APPLICATIONS
(2023)
Article
Environmental Sciences
Karlos R. de Moraes, Allan T. Souza, Daniel Barton, Petr Blabolil, Milan Muska, Marie Prchalova, Tomas Randak, Milan Riha, Mojmir Vasek, Jan Turek, Michal Tuser, Vladimir Zlabek, Jan Kubecka
Summary: Freshwater protected areas were created to combat the decline of world fauna and flora. An experiment in the Lipno reservoir in the Czech Republic showed that protected areas have a positive impact on fish communities, and factors such as bait attraction and migration may affect the effectiveness of these areas.
Article
Environmental Sciences
Gashaw C. Tesfaye, Allan T. Souza, Daniel Barton, Petr Blabolil, Martin Cech, Vladislav Drastik, Jaroslava Frouzova, Michaela Holubova, Lubos Kocvara, Tomas Kolarik, Carlos Martinez, Karlos R. Moraes, Milan Muska, Marie Prchalova, Milan Riha, Zuzana Sajdlova, Katerina Soukalova, Marek Smejkal, Michal Tuser, Mojmir Vasek, Lukas Vejrik, Ivana Vejrikova, Jiri Peterka, Tomas Juza, Jan Kubecka
Summary: Anthropogenic activities pose significant challenges to freshwater ecosystems, and long-term monitoring is crucial for their management and conservation. Monitoring programs often use fish and other biological indicators. However, the current European standard protocol does not adequately consider habitat volumes, leading to inaccurate estimates of catch and biomass. By analyzing data from Rimov Reservoir in the Czech Republic, we found that volume-weighting approaches provide a more realistic approximation of fish populations and should be recommended for use.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Review
Environmental Sciences
Marek Smejkal, Daniel Barton, Jindrich Duras, Pavel Horky, Milan Muska, Jan Kubecka, Nikola Pfauserova, Million Tesfaye, Ondrej Slavik
Summary: Most lotic ecosystems have been modified to serve human needs, such as building dams. Reservoirs have significant impacts on freshwater ecosystems and rheophilic fishes. Competition, predation, and the establishment of generalist species in altered river sections all affect the composition of rheophilic communities in tributaries. Identifying gaps in understanding mechanisms of fauna at habitat edges and conducting telemetry and trophic interaction studies are necessary for conservation efforts to protect rheophilic fish populations.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Fisheries
Tomas Juza, Petr Blabolil, Martin Cech, Vladislav Drastik, Josef Hejzlar, Lubos Kocvara, Milan Muska, Jiri Peterka, Zuzana Sajdlova, Michal Tuser, Mojmir Vasek, Jan Kubecka
Summary: Until 2006, the Lipno Reservoir had the highest pikeperch catches in the Czech Republic, but since 2007 it has suffered a partial collapse. Oligotrophication and unsuccessful spawning were identified as possible causes for the decline in pikeperch population. The low survival rate and slow growth of pikeperch fry, likely due to oligotrophication, have led to a lower probability of surviving their first winter.
ECOLOGY OF FRESHWATER FISH
(2023)
Article
Environmental Sciences
Mojmir Vasek, Marek Brabec, Petr Blabolil, Martin Cech, Vladislav Drastik, Tomas Juza, Jan Kubecka, Milan Muska, Jiri Peterka, Marie Prchalova, Milan Riha, Josef Hejzlar
Summary: This study found that the 815N values in fish scales can serve as sensitive bioindicators of anthropogenic nitrogen inputs from catchment areas to freshwater ecosystems. Therefore, measuring the 815N values of fish scales could be an effective method for monitoring nitrogen pollution in aquatic environments.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Michal Tuser, Marek Brabec, Helge Balk, Vladislav Drastik, Jan Kubecka, Jaroslava Frouzova
Summary: Fish body orientation affects the size estimation using hydroacoustic signals. We measured acoustic signals from tethered fish in different dorsal positions and found that the dorsal aspect influenced the shapes of the amplitude echo envelopes. We also discovered that echo lengths approximately 15 dB below the amplitude maximum could be used to determine the fish dorsal aspect and facilitate the conversion between acoustic target strength and true fish length.
Article
Ecology
Marek Smejkal, Daniel Barton, Petr Blabolil, Tomas Kolarik, Jan Kubecka, Zuzana Sajdlova, Allan T. Souza, Marek Brabec
Summary: By tagging and tracking 1702 individuals of Leuciscus aspius, researchers found that various environmental cues, including day number, water temperature, wind speed, and lunar phase, influenced the size of reproductive aggregations in freshwater fish. The study emphasizes the importance of obtaining diverse data sets to accurately interpret reproductive timing.
Proceedings Paper
Automation & Control Systems
Carlos Martinez, Allan T. Souza, Jan Kubecka
Summary: The removal of planktivorous fish leads to changes in the ecosystem, improving water transparency and reducing the risk of harmful algal blooms. This study presents a generic fish-zooplankton model and identifies conditions for eradicating the fish population through repeated removal. The model considers fish weight, age, and impulsive effects such as reproduction and fish removal, and demonstrates the importance of removing young fish for eradication.
