Article
Environmental Sciences
Silvia Galafassi, Maria Sighicelli, Antonio Pusceddu, Roberta Bettinetti, Alessandro Cau, Maria Eleonora Temperini, Raymond Gillibert, Michele Ortolani, Loris Pietrelli, Silvia Zaupa, Pietro Volta
Summary: This study investigated the presence of microplastic particles in the digestive system of perch in four south-alpine lakes and found that 86% of the analyzed specimens contained MPs. Despite the high number of ingested MPs, fish health was not affected, but the fullness index showed a potential interference with feeding activity.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Natalija Suhareva, Juris Aigars, Rita Poikane, Juris Tunens
Summary: The study demonstrated that the high mobility of Eurasian perch along associated aquatic systems significantly affects the mercury concentrations measured in the fish. Therefore, trophic position and isotopic signatures, along with identification of food sources, serve as important supplementary tools for more accurate data interpretation of mercury accumulation in perch.
ENVIRONMENTAL SCIENCES EUROPE
(2021)
Article
Environmental Sciences
F. Pinero-Garcia, R. Thomas, J. Mantero, E. Forssell-Aronsson, M. Isaksson
Summary: In this study, the biodistribution of radionuclides 238U, 234U, 226Ra, 210Po, and 137Cs in organs and tissues of perch from five lakes in Sweden was investigated. The results showed that the main radionuclides in perch were 238U and 226Ra. It is advised to consume skinned fillets of perch to avoid the intake of radionuclides.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Environmental Sciences
Olof Regnell, Sylvie V. M. Tesson, Nikolay Oskolkov, Michelle Nerentorp
Summary: A study found a positive correlation between selenium and mercury in freshwater fish. Selenium mitigates the toxicity of mercury but can divert from biosynthetic pathways. The study also observed a surplus of selenium in fish and found that it decreased with fish weight. This suggests that selenium accumulation is subject to homeostatic control and is related to the burden of mercury and selenium requirement.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Multidisciplinary Sciences
Jenny C. Vivas Munoz, Christian K. Feld, Sabine Hilt, Alessandro Manfrin, Milen Nachev, Daniel Koester, Maik A. Jochmann, Torsten C. Schmidt, Bernd Sures, Andrea Zikova, Klaus Knopf
Summary: Infection with eye flukes can lead to increased diet selectivity in European perch, with intensively infected fish showing preference for specific prey, while less intensively infected fish behave as generalist feeders with no particular prey preference in their diet. This highlights the indirect effect of parasites on the host's interaction with lower trophic levels and emphasizes the underestimated role of parasites in food web studies.
SCIENTIFIC REPORTS
(2021)
Article
Agriculture, Dairy & Animal Science
Pu Xu, Cuiyun Lu, Zhipeng Sun, Youyi Kuang, Dingchen Cao, Tangbin Huo, Chao Li, Hongyu Jin, Xianhu Zheng
Summary: This study analyzed the genetic structure of P. fluviatilis in China using microsatellite markers. A large number of microsatellite markers were developed based on genomic data, and the genetic diversity of wild populations was evaluated. The results showed high genetic diversity in populations from Wulungu Lake, Jili Lake, and the Wulungu River, and medium genetic diversity in the Kalaeerqisi River.
Article
Environmental Sciences
Lina Birgersson, Justin Jouve, Elisabeth Jonsson, Noomi Asker, Fredrik Andreasson, Oksana Golovko, Lutz Ahrens, Joachim Sturve
Summary: The study suggests that lifelong exposure to PFASs may affect the thyroid hormone status and immune defense of wild perch. Conversely, PCBs do not seem to have significant effects on perch in terms of thyroid hormone levels or gene expression related to the thyroid.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2021)
Article
Environmental Sciences
Marcus Hall, Oscar Nordahl, Anders Forsman, Petter Tibblin
Summary: Climate change affects seasonal environments and aquatic ecosystems by causing earlier and warmer springs, leading to significant changes in the thermal conditions for spawning and the viability of fish eggs and embryos. The study found that maternal size influenced the hatching success of Baltic Sea perch offspring, with larger females producing offspring with better performance across temperature treatments. Maintaining the size distribution of fish populations is crucial for the long-term productivity and viability of fish populations and the overall conservation of ecosystems.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Marine & Freshwater Biology
E. A. F. Christensen, M. B. S. Svendsen, J. F. Steffensen
Summary: The study found that European perch in estuarine environments exhibit a high growth rate primarily due to abundant food and low interspecific competition, rather than optimal salinities. Additionally, the migration of fish into the delta during winter is likely a strategy to avoid high salinities at low temperatures and for spawning purposes. These findings have implications for the management of estuaries and coastal areas, particularly as climate change is impacting these environments and call for further research on other anadromous sub-populations of stenohaline freshwater fish.
ESTUARINE COASTAL AND SHELF SCIENCE
(2021)
Article
Fisheries
Hung Quang Tran, Mikko Kiljunen, Hien Van Doan, Vlastimil Stejskal
Summary: Stable isotope analysis and Bayesian mixing models were used to study the effects of feed components on the development of European perch tissues. Moderate inclusion of yellow mealworm larvae meal was found to promote tissue growth, while higher levels may decrease its contribution, with soy-derived ingredients also playing a significant role in tissue development.
Article
Environmental Sciences
Milda Stankeviciute, Gintare Sauliute, Tomas Makaras, Brigita Capukoitiene, Gelmine Vanseviciute, Svetlana Markovskaja
Summary: Parasitic infections and chemical stressors can have adverse effects on fish health, leading to inflammation and cytogenetic damage.
ENVIRONMENTAL RESEARCH
(2022)
Article
Environmental Sciences
Ossi Keva, Mikko Kiljunen, Heikki Hamalainen, Roger Jones, Kimmo K. Kahilainen, Paula Kankaala, Miikka B. Laine, Jos Schilder, Ursula Strandberg, Jussi Vesterinen, Sami J. Taipale
Summary: Environmental change can affect the nutritional quality of fish muscle for human consumption, as shown in a study on Eurasian perch. The study found that perch allochthony increased with decreasing lake pH and increasing forest coverage, and perch muscle THg and n6-FA content also increased with forest coverage. In contrast, perch muscle DHA content decreased and ALA content increased towards shallower and murkier lakes. The study suggests that the quality of perch muscle decreases with increasing forest coverage and decreasing pH, potentially due to increasing fish allochthony.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Johan Fahlman, Gustav Hellstrom, Micael Jonsson, Jerker Berglund Fick, Martin Rosvall, Jonatan Klaminder
Summary: The study hypothesized that European perch populations exposed to oxazepam would exhibit reduced anti-predator behavior, but the results showed that perch exposed to oxazepam in a lake actually displayed increased anti-predator behavior compared to a control lake. This indicates that the effects of oxazepam on perch behavior in a natural ecosystem may be negligible compared to other environmental factors.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Fisheries
Hung Quang Tran, Hien Van Doan, Vlastimil Stejskal
Summary: This study evaluated the effects of diets containing different levels of yellow mealworm larvae meal on the swimming capacity, physiological responses, and energy expenditure of European perch. The results showed that while diet treatments did not affect swimming performance of European perch, they did have an impact on blood parameters and muscle traits.
Article
Environmental Sciences
Emilia Uurasjarvi, Erika Sainio, Outi Setala, Maiju Lehtiniemi, Arto Koistinen
Summary: This study investigated the ingestion of microplastics by wild freshwater fish species. Results show that a small percentage of perch and vendace had ingested plastic, with most microplastics found being polyethylene, polypropylene, and polyethylene terephthalate. The developed method revealed low levels of ingested microplastics on average, suggesting the need for further development for routine monitoring of small microplastics.
ENVIRONMENTAL POLLUTION
(2021)
Article
Parasitology
Sylva Lankova, Pavel Vejl, Martina Melounova, Daniela Cilova, Jaroslav Vadlejch, Dana Miklisova, Ivana Jankovska, Iva Langrova
Summary: This study presents new morphological and molecular information on the filaroid nematode Setaria cervi obtained from game ungulates in the western and northern regions of the Czech Republic, describing differences among female developmental stages and evaluating phylogenetic relationships within the family Onchocercidae. The analysis confirms the ancient separation of the subclass Setariinae from the remaining two onchocercid lineages Dirofilariinae and Onchocerinae, in line with recent phylogenetic studies.
Article
Veterinary Sciences
Jaroslav Vadlejch, Iveta Angela Kyrianova, Marian Varady, Johannes Charlier
Summary: The study reveals the widespread occurrence of anthelmintic resistance (AR) among dairy goats in the Czech Republic, primarily due to inappropriate pasture and health management practices. High stocking rate and farmer inexperience are significant factors associated with anthelmintic resistance.
BMC VETERINARY RESEARCH
(2021)
Article
Fisheries
Chandani R. Verma, Pradeep Kumkar, Sachin M. Gosavi, Lukas Kalous
JOURNAL OF APPLIED ICHTHYOLOGY
(2021)
Article
Agriculture, Dairy & Animal Science
Dominika Mravcakova, Malgorzata Sobczak-Filipiak, Zora Varadyova, Katarina Kuckova, Klaudia Cobanova, Peter Marsik, Jan Tauchen, Jaroslav Vadlejch, Marcin Mickiewicz, Jaroslaw Kaba, Marian Varady
Summary: This study evaluated the effects of Artemisia absinthium and Malva sylvestris on antioxidant parameters and local immune responses in the abomasal mucosa of lambs infected with Haemonchus contortus. Results showed that these medicinal plants can reduce oxidative stress, enhance antioxidant capacity, increase mucus production, and regulate the number of mast cells and plasma cells in the abomasal tissue, ultimately improving the resistance of lambs to GIN infections.
Article
Biodiversity Conservation
Ivan Jaric, Celine Bellard, Ricardo A. Correia, Franck Courchamp, Karel Douda, Franz Essl, Jonathan M. Jeschke, Gregor Kalinkat, Lukas Kalous, Robert J. Lennox, Ana Novoa, Raphael Proulx, Petr Pysek, Andrea Soriano-Redondo, Allan T. Souza, Reut Vardi, Diogo Verissimo, Uri Roll
CONSERVATION BIOLOGY
(2021)
Article
Biodiversity Conservation
Martin Kulma, Rafael Molero-Baltanas, Miloslav Petrtyl, Jiri Patoka
Summary: This study reports the first occurrence of synanthropic silverfish Ctenolepisma calvum in the Czech Republic, with established populations found in two localities in Prague. The study suggests that the climate restrictions proposed for Lepisma saccharinum and Thermobia domestica may not be effective against C. calvum. Furthermore, little is known about C. calvum, indicating the need for further monitoring and risk assessment of this silverfish species.
BIOINVASIONS RECORDS
(2022)
Review
Fisheries
Jindrich Novak, Andre Lincoln Barroso Magalhaes, Zen Faulkes, Yonvitner, Alberto Maceda-Veiga, Neelesh Dahanukar, Tadashi Kawai, Lukas Kalous, Jiri Patoka
Summary: This article discusses the importance of Czechia in the ornamental aquaculture industry, focusing on its history, social status, trade trends, and research activities. Czech suppliers have had a significant influence on the global freshwater ornamental aquaculture market. The article suggests considering the economic and scientific significance of Czechia in the design of aquaculture policies, including the management of invasive alien species and conservation programs for endangered species.
Review
Biochemistry & Molecular Biology
Martin Knytl, Adrian Forsythe, Lukas Kalous
Summary: This review focuses on two entities of the Carassius genus with different biological characteristics: the globally widespread and invasive Carassius gibelio, and the decreasing trend of natural occurrence in C. carassius. Understanding the comprehensive biology and cytogenetics of both entities and their interactions can help in balancing their advantages and disadvantages, and aid in conservation efforts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Multidisciplinary Sciences
Heiner Kuhl, Kang Du, Manfred Schartl, Lukas Kalous, Matthias Stoeck, Dunja K. Lamatsch
Summary: Understanding genome evolution of polyploids involves analyzing their similar subgenomes and haplotypes. In this study, the genome of the asexual Prussian carp was sequenced, resulting in a haplotype-resolved chromosome-scale assembly of a hexaploid animal. Comparisons with ancestral diploid cyprinids and goldfish revealed the genome structure, phylogeny, and genome duplication history.
NATURE COMMUNICATIONS
(2022)
Article
Fisheries
Surya Gentha Akmal, Yonvitner, Rikho Jerikho, Fredinan Yulianda, Yusli Wardiatno, Jindrich Novak, Lukas Kalous, Ondrej Slavik, Jiri Patoka
Summary: The African grey bichir is a popular ornamental fish in Indonesia, and its trade and aquaculture production are well established. A market survey reveals its wide distribution in Indonesia, posing potential ecological risks. However, replacing it with the albino phenotype could be a feasible risk mitigation strategy.
AQUACULTURE ENVIRONMENT INTERACTIONS
(2022)
Article
Environmental Sciences
Pradeep Kumkar, Manoj Pise, Chandani R. Verma, Tushar Khare, Miloslav Petrtyl, Lukas Kalous
Summary: Sustainable plastic-waste management is increasingly challenging due to the accumulation of plastic debris in vulnerable ecosystems. Microplastic particles generated from these wastes pose additional threats to ecosystems as they can adsorb and carry toxic chemicals. This study investigates the impact of one such toxicant, diethyl phthalate, originated from microplastics, on two species of freshwater loaches from the Western Ghats of India.
Article
Environmental Sciences
Chandani R. Verma, Manoj Pise, Pradeep Kumkar, Sachin M. Gosavi, Lukas Kalous
Summary: In addition to serving as a source of drinking water and transportation, urban rivers provide support for inland fisheries, agriculture, and industry. However, these rivers are heavily impacted by human activities, including plastic pollution, and are predicted to contribute significantly to the global ocean plastic pollution problem. The management of urban rivers remains a major challenge due to limited knowledge on the extent of riverine microplastics, especially in countries like India.
WATER AIR AND SOIL POLLUTION
(2022)
Article
Environmental Sciences
Chandani R. Verma, Pradeep Kumkar, Tejashree Shendage, Pratiksha Shinde, Vinay Kumar, Sanjay S. Kharat, Tushar Khare, Lukas Kalous
Summary: Carbon nanofibers have toxic effects on benthic fishes, causing hepatic oxidative damage and loss of predator-recognition ability.
TOXICOLOGICAL AND ENVIRONMENTAL CHEMISTRY
(2023)
Article
Agriculture, Dairy & Animal Science
Martin Ptacek, Iveta Angela Kyrianova, Jana Napravnikova, Jaromir Duchacek, Tomas Husak, Alfonso J. Chay-Canul, Claudia Zaragoza-Vera, Luis Cruz-Bacab, Jaroslav Vadlejch
Summary: The study investigated the impact of Eimeria sp. and strongylid nematodes infections on live weight, body-condition score, depth of musculus longissimus thoracis et lumborum (MLTL), and back-fat thickness in a flock of dairy goats. Results showed a significant correlation between body-condition score and Eimeria exposure, as well as a linear tendency for MLTL response to strongylid nematode infection. The study suggested the potential use of body-condition score for identifying Eimeria infection and targeting animals infected by strongylid nematode, although the validity of the results was limited by the number of observed animals under specific breeding conditions.
