Milan Říha
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View article: Factors Influencing the Stocking of Juvenile Pikeperch ( <i>Sander lucioperca</i> )
Factors Influencing the Stocking of Juvenile Pikeperch ( <i>Sander lucioperca</i> ) Open
Predator species of fish play crucial roles in ecosystem balance through top‐down control, a mechanism frequently exploited in biomanipulation to stock predator species. Juvenile pikeperch ( Sander lucioperca ) were stocked ( n = 52,887) i…
View article: Revealing Chronotypes Across Aquatic Species Using Acoustic Telemetry
Revealing Chronotypes Across Aquatic Species Using Acoustic Telemetry Open
Acoustic telemetry offers valuable opportunities to investigate individual variability in circadian‐related and other behaviours and how environmental cues shape these patterns in wild fish populations. However, this potential has not yet …
View article: Long‐term shifts in pikeperch, <scp><i>Sander lucioperca</i></scp>, diet composition in a changing reservoir
Long‐term shifts in pikeperch, <span><i>Sander lucioperca</i></span>, diet composition in a changing reservoir Open
As a significant piscivorous predator, the pikeperch ( Sander lucioperca ) plays a critical role in regulating aquatic ecosystems. Understanding its size‐related feeding behaviour is thus vital for assessing its impact. To evaluate its rol…
View article: Hungry Catfish—Effect of Prey Availability on Movement Dynamics of a Top Predator
Hungry Catfish—Effect of Prey Availability on Movement Dynamics of a Top Predator Open
The availability and spatial distribution of prey determine the energetic costs of predators foraging and largely drive their space use, activity level and foraging timing. Consequently, predators in ecosystems with different prey availabi…
View article: A fresh perspective on carp feeding behavior in an aquaculture pond and its consequences for individual growth
A fresh perspective on carp feeding behavior in an aquaculture pond and its consequences for individual growth Open
The common carp (Cyprinus carpio) is an important species in global aquaculture. To optimize its production, it is necessary to understand its behaviour in relation to environmental and management factors. This study investigated the spati…
View article: Movement in <scp>3D</scp>: Novel Opportunities for Understanding Animal Behaviour and Space Use
Movement in <span>3D</span>: Novel Opportunities for Understanding Animal Behaviour and Space Use Open
Animals move in three spatial dimensions, but many animal movement tools have only focused on the use of 2D coordinates for modelling space use, habitat selection, behavioural classification, social interactions and movement. Here, we subm…
View article: Transition to Piscivory Seen Through Brain Transcriptomics in a Juvenile Percid Fish: Complex Interplay of Differential Gene Transcription, Alternative Splicing, and ncRNA Activity
Transition to Piscivory Seen Through Brain Transcriptomics in a Juvenile Percid Fish: Complex Interplay of Differential Gene Transcription, Alternative Splicing, and ncRNA Activity Open
Pikeperch ( Sander Lucioperca ) belongs to main predatory fish species in freshwater bodies throughout Europe playing the key role by reducing planktivorous fish abundance. Two size classes of the young‐of‐the‐year (YOY) pikeperch are know…
View article: Detailed Insight into Gillnet Catches: Fish Directivity and Micro Distribution
Detailed Insight into Gillnet Catches: Fish Directivity and Micro Distribution Open
Gillnets are widely used in research and commercial fishery activities. As passive gear, gillnets can be selective and dependent on the diel migration of fish. In areas with limited littoral extent, inshore–offshore migration may cause bia…
View article: Hungry catfish – effect of prey availability on movement dynamics of a top predator
Hungry catfish – effect of prey availability on movement dynamics of a top predator Open
The availability and spatial distribution of prey determines the energetic costs of predators foraging and largely drives their space use, activity level and foraging timing. Consequently, predators in ecosystems with different prey availa…
View article: Tracking aquatic animals for fisheries management in European waters
Tracking aquatic animals for fisheries management in European waters Open
Acoustic telemetry (AT) has emerged as a valuable tool for monitoring aquatic animals in both European inland and marine waters over the past two decades. The European Tracking Network (ETN) initiative has played a pivotal role in promotin…
View article: Electronic tagging and tracking aquatic animals to understand a world increasingly shaped by a changing climate and extreme weather events
Electronic tagging and tracking aquatic animals to understand a world increasingly shaped by a changing climate and extreme weather events Open
Despite great promise for understanding the impacts and extent of climate change and extreme weather events on aquatic animals, their species, and ecological communities, it is surprising that electronic tagging and tracking tools, like bi…
View article: Positioning aquatic animals with acoustic transmitters
Positioning aquatic animals with acoustic transmitters Open
Geolocating aquatic animals with acoustic tags has been ongoing for decades, relying on the detection of acoustic signals at multiple receivers with known positions to calculate a 2D or 3D position, and ultimately recreate the path of an a…
View article: Somatic growth of pikeperch (Stizostedion lucioperca) in relation to variation in temperature and eutrophication in a Central Europe Lake
Somatic growth of pikeperch (Stizostedion lucioperca) in relation to variation in temperature and eutrophication in a Central Europe Lake Open
Global climate change has been altering freshwater ecosystems by impacting many ecological processes, including individual fish growth. Predictions of responses of local fish populations to future environmental change can draw inferences f…
View article: Calibration of fish biomass estimates from gillnets: Step towards broader application of gillnet data
Calibration of fish biomass estimates from gillnets: Step towards broader application of gillnet data Open
Fish are an important component of aquatic ecosystems, thus representative and reliable assessments of their population variables are essential for a variety of ecological applications, management and conservation. Determining Fish Density…
View article: Can a Protected Area Help Improve Fish Populations under Heavy Recreation Fishing?
Can a Protected Area Help Improve Fish Populations under Heavy Recreation Fishing? Open
Freshwater protected areas are designated parts of the inland waters that restrict human activities. They were created as a mechanism to combat the decline of fauna and flora of the world. Some authors have questioned their actual effectiv…
View article: Long-term monitoring of fish in a freshwater reservoir: Different ways of weighting complex spatial samples
Long-term monitoring of fish in a freshwater reservoir: Different ways of weighting complex spatial samples Open
Anthropogenic activities continue to pose the greatest challenges to freshwater ecosystems. Therefore, long-term monitoring is essential for the management and conservation of these resources. Monitoring programs for freshwater bodies ofte…
View article: Different hosts in different lakes: prevalence and population genetic structure of plerocercoids of Ligula intestinalis (Cestoda) in Czech water bodies
Different hosts in different lakes: prevalence and population genetic structure of plerocercoids of Ligula intestinalis (Cestoda) in Czech water bodies Open
Ligula intestinalis (Linnaeus, 1758) is a tapeworm parasite with a worldwide distribution that uses a wide variety of fish species as its second intermediate host. In the present study, we investigated the prevalence and population genetic…
View article: Similarities and Differences in Fish Community Composition Accessed by Electrofishing, Gill Netting, Seining, Trawling, and Water eDNA Metabarcoding in Temperate Reservoirs
Similarities and Differences in Fish Community Composition Accessed by Electrofishing, Gill Netting, Seining, Trawling, and Water eDNA Metabarcoding in Temperate Reservoirs Open
It is difficult to understand the composition and diversity of biological communities in complex and heterogeneous environments using traditional sampling methods. Recently, developments in environmental DNA metabarcoding have emerged as a…
View article: Big-data approaches lead to an increased understanding of the ecology of animal movement
Big-data approaches lead to an increased understanding of the ecology of animal movement Open
Understanding animal movement is essential to elucidate how animals interact, survive, and thrive in a changing world. Recent technological advances in data collection and management have transformed our understanding of animal “movement e…
View article: Dynamics of the habitat use of three predatory freshwater fish in a lentic ecosystem
Dynamics of the habitat use of three predatory freshwater fish in a lentic ecosystem Open
To understand the conditions of coexistence in multiple-species predator community, we studied longitudinal and vertical movement of pike ( Esox lucius ), pikeperch ( Sander lucioperca ) and catfish ( Silurus glanis ) in the Římov Reservoi…
View article: Openness of Fish Habitat Matters: Lake Pelagic Fish Community Starts Very Close to the Shore
Openness of Fish Habitat Matters: Lake Pelagic Fish Community Starts Very Close to the Shore Open
Fish communities differ significantly between the littoral and the pelagic habitats. This paper attempts to define the shift in communities between the two habitats based on the European standard gillnet catch. We sampled the benthic and p…
View article: Low Specific Phosphorus Uptake Affinity of Epilithon in Three Oligo- to Mesotrophic Post-mining Lakes
Low Specific Phosphorus Uptake Affinity of Epilithon in Three Oligo- to Mesotrophic Post-mining Lakes Open
Epilithon contributes to phosphorus (P) cycling in lakes, but its P uptake traits have been rarely studied. We measured the chemical composition of epilithon and its inorganic P uptake kinetics using isotope 33 P in three deep oligo- to me…
View article: Influence of internal seiche dynamics on vertical movement of fish
Influence of internal seiche dynamics on vertical movement of fish Open
Internal seiches are common in stratified lakes, with significant effects on stratification patterns, hydrodynamics and vertical nutrient transport. In particular, seiche can change the vertical distribution of the thermocline and the cold…