Radoslaw Kajetan Kowalski

Scopus Publications

Effect of oxygen and antioxidants on the common carp (Cyprinus carpio L.) milt during short-term storage
Agnieszka Brzyszcz, Beata Sarosiek, Katarzyna Dryl, Katarzyna Targońska, Michał Blitek, Dariusz Kucharczyk, Wojciech Skorupa, Masaya Morita, Radosław K. Kowalski
Aquaculture, 2026
This study explores the impact of oxygen and antioxidants in an immobilizing buffer on short-term storage of common carp sperm. Sperm from five carp individuals underwent short-term storage for 10 days without dilution (Control), mixed with buffer TLP alone (TLP), or with antioxidants: 5 mM glutathione (Glut), 5 mM ascorbic acid (VitC), 1.5 mg/mL vitamin E (VitE), and a mix of all mentioned antioxidants (Mix). Diluted milt samples were stored at 4 °C in either open Eppendorf tubes within oxygen-filled bags (refreshed every 24 h) or closed tubes under limited aerobic conditions. All samples were gently mixed twice daily to prevent spermatozoa sedimentation. Computer-assisted sperm analysis (CASA) was employed to measure the curvilinear velocity (VCL) and total motility (MOT) of stored samples. Live/Dead double staining kit assessed sperm membrane integrity. After 10 days of storage, a fertility trial was conducted to compare preserved milt with freshly collected sperm samples ( n = 3). In samples stored in limited aerobic conditions, the VCL parameter in TLP, Glut, and VitE buffers remained steady. Oxygen altered MOT and VCL, with the best variants of diluents (TLP and VitE) showing a decrease from 90 % to about 80 %. In samples with the addition of ascorbic acid and the antioxidant mixture, a loss of viability was observed after 6 days. On the other hand, membrane integrity in limited aerobic conditions (in buffers TLP, Glut, and VitE) remained unaffected to day 10. Fertilization success, measured by hatching rate, indicated that diluted common carp milt, stored for 10 days in aerobic conditions, maintained its fertilizing potential. This study demonstrates the impact of oxygen utilization and the potential beneficial effect of antioxidant supplementation on the short-term storage of common carp milt in aquaculture practices. Correlation analysis conducted in this study revealed strong positive relationships between hatching rate and motility parameters, such as ALH and total motility, highlighting the importance of these factors in successful common carp fertilization. • Oxygen-rich storage conditions reduced sperm motility and velocity after 6 days. • Sperm viability and hatching rates were highest in samples stored in air conditions. • Glutathione and vitamin E potentially enhance the durability of common carp sperm. • Positive correlations were found between sperm motility, ALH and hatching.
The Influence of Sperm Activation Methods and Oocyte Collection on the Reproductive Effects of Northern Pike (Esox lucius)
Michał Cydzik, Krystyna Demska-Zakęś, Mirosław Szczepkowski, Bożena Szczepkowska, Beata Sarosiek, Michał Blitek, Aleksy Kowalski, Radosław Kajetan Kowalski
Animals, 2025
This study compared the quality of northern pike eggs collected using traditional methods (hand stripping) and pneumatic methods (air stripping). The effects of different activation solutions (0.4% NaCl, 0.8% NaCl, and hatchery water) on egg fertilization under controlled conditions were also investigated. After egg collection, the Pseudo-Gonado-Somatic Index (PGSI) was measured; the PGSI values in the samples obtained using the pneumatic method (13.8 ± 3.9%) were lower, but did not differ statistically from those obtained by hand stripping (16.5 ± 5.4%). The 0.4% NaCl solution proved to be the most effective for sperm activation, as assessed by the Computer-Assisted Sperm Analysis (CASA) system, compared to the 0.8% NaCl solution. The pneumatic method achieved a higher egg collection efficiency (93.7% occlusion) than the traditional method, with significant differences observed in groups activated with water. The average hatching percentage of larvae was 89.5% in groups using the pneumatic method, compared to 71.2% in the traditional groups, highlighting the advantages of this modern approach. The application of the pneumatic method and 0.4% NaCl for the artificial fertilization of northern pike resulted in higher fertilization and hatching rates compared to other techniques, making this method a promising option for the artificial reproduction of other fish species.
Rainbow trout (Oncorhynchus mykiss) sperm collected post-mortem could be revitalised by short-term storage
Agnieszka Brzyszcz, Sylwia Judycka, Katarzyna Dryl, Beata I. Cejko, Beata Sarosiek, Radosław K. Kowalski
Aquaculture, 2024
Changes in sperm metabolome during carp sperm short-term storage in different media: In search of sperm quality and storage capability markers
Viktoriya Dzyuba, Joanna Giebułtowicz, Borys Dzyuba, Ganna Fedorova, Vitaliy Kholodnyy, Radosław Kajetan Kowalski, Agnieszka Brzyszcz, Sergii Boryshpolets
Aquaculture, 2024
The successful production of “sterbel” hybrids using beluga (Huso huso) cryopreserved sperm
D. Fopp-Bayat, A. Nitkiewicz, B. Sarosiek, R.K. Kowalski
Animal Reproduction Science, 2023
Ide (Leuciscus idus) sperm short-term storage: Effects of different extenders and dilution ratios
Beata Irena Cejko, Sławomir Krejszeff, Radosław Kajetan Kowalski, Sylwia Judycka
Animal Reproduction Science, 2022
Application of sodium alginate solution for short-term storage of different volumes of sex-reversed rainbow trout (Oncorhynchus mykiss) testicular sperm
Beata Irena Cejko, Katarzyna Dryl, Beata Sarosiek, Jarosław Ilgert, Marcin Jesiołowski, Radosław Kajetan Kowalski
Aquaculture, 2022
Optimalisation of the Activation Medium and Effect of Inhibiting Activities of Acid Phosphatase, Lactate Dehydrogenase and β-N-Acetylglucosaminidase on the Fertilisation Success of Eurasian Perch (Perca fluviatilis L.)
Beata Sarosiek, Katarzyna Dryl, Radosław K. Kowalski, Katarzyna Palińska-Żarska, Daniel Żarski
Animals, 2022
Although methods for the artificial reproduction of perch have been developed, a lack of information remains regarding the enzymes present in its semen, as well as their role in the fertilisation process. In this study, we first select the optimal activating solution for perch fertilisation and then determine the inhibition effect of enzymes that have already been reported as present in the sperm of teleosts—acid phosphatase (AcP), lactic dehydrogenase (LDH) and β-N-acetylglucosaminidase (β-NAGase)—on the percentage of motile spermatozoa and fertilised eggs. Of the 8 studied activation media, a solution composed of 80 mM NaCl, 20 mM KCl, 10 mM Tris, with pH 8.0 and 206 mOsm/kg proved to be optimal for perch gametes. The addition of ammonium molybdate (AcP inhibitor) caused no significant reduction in the percentage of fertilised eggs. On the other hand, the addition of 0.25 mM gossypol (LDH inhibitor) and 0.125 M acetamide (β-N-acetylglucosaminidase inhibitor) significantly decreased the fertilisation percentage to 41.1% and 52.4%, respectively, in contrast to the control (89.9 %). Both LDH and β-NAGase thus seem to play a very important role in the perch fertilisation process.
Application of artificial seminal plasma to short-term storage of a large volume of common carp (Cyprinus carpio) sperm for two weeks under controlled conditions
Beata Irena Cejko, Daniel Żarski, Beata Sarosiek, Katarzyna Dryl, Katarzyna Palińska-Żarska, Wojciech Skorupa, Radosław Kajetan Kowalski
Aquaculture, 2022
We previously demonstrated that artificial seminal plasma (ASP), developed for common carp (Cyprinus carpio), enabled considerable improvement of the fertilizing capacity of sperm in this species. Here, for the first time, the effectiveness of using ASP (ASP: 2 mM CaCl2, 1 mM MgSO4, 40 mM KCl, 100 mM NaCl, 20 mM Tris; pH 7.5 and 310 mOsm kg−1) for short-term storage of tenfold diluted sperm for up to two weeks at 10 °C was evaluated. Additionally, the fertilizing capacity of stored sperm was investigated. Sperm were stored in a volume of 5 ml in containers equipped with ventilation plugs enabling gas exchange of the stored sperm. During the study, the quality of the sperm was verified using the computer-assisted sperm analysis (CASA) system after 1, 2, 5, 9, 11 and 14 days of storage. After 14 days of common carp sperm storage in ASP sperm motility (MOT, %), the progressive motile sperm (PRG, %) and curvilinear velocity of sperm (VCL, μm s−1) were confirmed to be 55%, 25% and 120 μm s−1, respectively. At the same time, in undiluted sperm (Control), we did not observe sperm motility. Only until the 2nd day of storage in undiluted samples motility and sperm kinetic parameters remained high level (84%, 34% and 144 μm s−1 for MOT, PRG and VCL, respectively). The fertilization of eggs and hatching rate after 14 days of sperm storage in ASP were 80% and 40%, respectively, and did not differ significantly from the fertilization and hatching rate determined after fresh sperm was used for fertilization. In summary, for the first time, the fertilization capacity of common carp sperm after 14 days of short-term storage under ASP conditions was confirmed, indicating the possibility of using previously collected and diluted ASP sperm in reproduction at a time convenient for the breeder. Thus, it is possible to reduce the stressful and time-consuming handling of fish during breeding under controlled conditions, which has an impact on the welfare of spawners.
Dietary ara improves cox activity in broodstock and offspring survival fitness of a model organism (Medaka Oryzias Latipes)
Agata Kowalska, Maciej Kamaszewski, Marta Czarnowska-Kujawska, Piotr Podlasz, Radosław K. Kowalski
Animals, 2020
A 3-week feeding trial was conducted in medaka broodstock (age five months) to examine the effect of dietary arachidonic acid (ARA) level (range: 4–23 mg g−1 of total fatty acids (TFAs)) on fertility, cyclooxygenase (COX) activity, egg size, sperm motility parameters, hatching rate and weight of hatch, survival and growth of larvae. After spawn induction and dietary exposure to 4 mg ARA g−1 TFA, broodstock were fed a diet containing ARA in the amounts: 4 (continued, as control), 5, 14 and 23 mg g−1 TFA. COX1 activity in the liver and the number of COX2-positive cells in the ovaries was increased in females fed the diets containing the two highest amounts of ARA. The highest sperm motility parameters were observed in males fed a diet containing 23 mg ARA g−1 TFA. The hatchability rate and bodyweight of hatchlings were higher in the group obtained from broodstock fed a diet containing 23 mg ARA g−1 TFA (79% and 0.66 mg fish−1, respectively) compared with 4 mg ARA g−1 TFA (50% and 0.40 mg fish−1). The average mortality of offspring obtained from this group at 7 days post hatching was significantly higher than that of all other groups.
A comparison of pneumatic and hand stripping of whitefish (Coregonus lavaretus) eggs for artificial reproduction
Radosław Kajetan Kowalski, Beata Irena Cejko, Joanna Grudniewska, Stefan Dobosz, Mirosław Szczepkowski, Beata Sarosiek
Animals, 2020
The effect of cryopreservation extender on sperm motility and hatch success in northern pike (Esox lucius)
Beata Irena Cejko, Beata Sarosiek, Katarzyna Dryl, Sylwia Judycka, Bożena Szczepkowska, Mirosław Szczepkowski, Radosław Kajetan Kowalski
Aquaculture, 2020
Sperm quality in fish: Determinants and affecting factors
Radosław Kajetan Kowalski, Beata Irena Cejko
Theriogenology, 2019
Artificial seminal plasma improves motility and fertilisation capacity of common carp Cyprinus carpio L. sperm during one hour of storage
Beata Irena Cejko, Daniel Żarski, Katarzyna Palińska-Żarska, Mariola Słowińska, Radosław Kajetan Kowalski
Aquaculture, 2019
Application of glucose-methanol extender to cryopreservation of Mozambique tilapia (Oreochromis mossambicus) sperm
Stanley Ifeanyi Ugwu, Agata Kowalska, Masaya Morita, Radoslaw Kajetan Kowalski
Turkish Journal of Fisheries and Aquatic Sciences, 2019
Optimisation of sodium and potassium concentrations and pH in the artificial seminal plasma of common carp Cyprinus carpio L.
Beata Irena Cejko, Ákos Horváth, Timea Kollár, Eszter Kása, Jelena Lujić, Zoran Marinović, Béla Urbányi, Radosław Kajetan Kowalski
Fish Physiology and Biochemistry, 2018
Effectiveness of the air stripping in two salmonid fish, rainbow trout (Oncorhynchus mykiss) and brown trout (salmo trutta morpha fario)
Radosław Kajetan Kowalski, Beata Sarosiek, Sylwia Judycka, Katarzyna Dryl, Joanna Grudniewska, Stefan Dobosz, Beata Irena Cejko
Journal of Visualized Experiments, 2018
Multiple collections of common carp Cyprinus carpio L. semen during the reproductive period and its effects on sperm quality
Beata Irena Cejko, Beata Sarosiek, Sławomir Krejszeff, Radosław Kajetan Kowalski
Animal Reproduction Science, 2018
Serine-like proteolytic enzymes from common carp Cyprinus carpio L. seminal plasma are able to degrade sperm proteins
Beata Irena Cejko, Mariola Słowińska, Sylwia Judycka, Radosław Kajetan Kowalski
Reproductive Biology, 2017
Hormonal treatment affects sperm motility in the spined loach (Cobitis taenia, Pisces, Cobitidae)
Beata Irena Cejko, Sylwia Judycka, Dorota Juchno, Alicja Boroń, Anna Leska, Olga Jabłońska, Anna Pecio, Radosław Kajetan Kowalski
Aquaculture Research, 2017
Dietary resveratrol improves immunity but reduces reproduction of broodstock medaka Oryzias latipes (Temminck & Schlegel)
Agata Kowalska, Andrzej K. Siwicki, Radosław K. Kowalski
Fish Physiology and Biochemistry, 2017
Application of spermatozoa from neo-males (XX) to induce androgenetic development in rainbow trout (Oncorhynchus mykiss)
Oliwia Michalik, Radosław Kowalski, Elżbieta Ziomek, Piotr Hliwa, Agata Mieszkowska, Rafał Rożyński, Konrad Ocalewicz
Folia Biologica Poland, 2017
Evidence of the sterility of allotetraploid Cobitis loaches (Teleostei, Cobitidae) using testes ultrastructure
Dorota Juchno, Anna Pecio, Alicja Boroń, Anna Leska, Olga Jablonska, Beata Irena Cejko, Radosław Kajetan Kowalski, Sylwia Judycka, Mirosław Przybylski
Journal of Experimental Zoology Part A Ecological and Integrative Physiology, 2017
The effect of supplementation of a trehalose-based extender with KCl on rainbow trout (Oncorhynchus mykiss) sperm freezability and post-thaw motility
S. Judycka, B.I. Cejko, K. Dryl, S. Dobosz, J. Grudniewska, R.K. Kowalski
Aquaculture, 2016
Cryopreservation method for whitefish (Coregonus lavaretus) semen possible for use in large-scale fertilization
Beata Sarosiek, Katarzyna Dryl, Sylwia Judycka, Stefan Dobosz, Joanna Grudniewska, Radosław K Kowalski
Aquaculture Research, 2016
Androgenetic development of X- and Y-chromosome bearing haploid rainbow trout embryos
Oliwia Michalik, Radosław K. Kowalski, Sylwia Judycka, Rafał Rożyński, Stefan Dobosz, Konrad Ocalewicz
Theriogenology, 2016
Substrate specificity of proteolytic activity in the testes fluid and seminal plasma of the common carp Cyprinus carpio
B. I. Cejko, M. Słowińska, S. Judycka, R. K. Kowalski
Journal of Fish Biology, 2016
Effects of different stripping methods of female and activation medium on fertilization success in northern pike (Esox lucius)
B.I. Cejko, B. Sarosiek, S. Krejszeff, S. Judycka, M. Szczepkowski, B. Szczepkowska, R.K. Kowalski
Czech Journal of Animal Science, 2016
Changes in spawning time led to the speciation of the broadcast spawning corals Acropora digitifera and the cryptic species Acropora sp. 1 with similar gamete recognition systems
Shun Ohki, Radoslaw K. Kowalski, Seiya Kitanobo, Masaya Morita
Coral Reefs, 2015
Artificial reproduction of different dace, Leuciscus leuciscus (L.) populations as a method for biodiversity preservation
Katarzyna Targonska, Krzysztof Kupren, Roman Kujawa, Andrzej Mamcarz, Zbigniew Kaczkowski, Jan Glogowski, Radoslaw K. Kowalski, Daniel Zarski, Elzbieta Wyszomirska, Dariusz Kucharczyk
Turkish Journal of Fisheries and Aquatic Sciences, 2015
Influence of acid phosphatase and arylsulfatase inhibitor additions on fertility rate of Siberian sturgeon (Acipenser baerii Brandt, 1869)
B. Sarosiek, K. Dryl, S. Judycka, M. Szczepkowski, R. K. Kowalski
Journal of Applied Ichthyology, 2015
Biochemical factors of common carp Cyprinus carpio L. 1758, seminal plasma and its relationship with sperm motility parameters
B. I. Cejko, S. Krejszeff, B. Sarosiek, D. Żarski, S. Judycka, R. K. Kowalski
Journal of Applied Ichthyology, 2015
The effect of osmolality on egg fertilization in common carp, Cyprinus carpio Linnaeus, 1758
D. Żarski, B. I. Cejko, S. Krejszeff, K. Palińska-Żarska, Á. Horváth, B. Sarosiek, S. Judycka, R. K. Kowalski, B. Łączyńska, D. Kucharczyk
Journal of Applied Ichthyology, 2015
Use of biochemical markers to evaluate the quality of fresh and cryopreserved semen from the arctic fox (Vulpes lagopus)
K. Stasiak, J. Glogowski, W. Demianowicz, R. Kowalski, A. Nowak-Tkaczyk, B. Janicki
Polish Journal of Veterinary Sciences, 2014
Inhibition of β-N-acetylglucosaminidase by acetamide affects sperm motility and fertilization success of rainbow trout (Oncorhynchus mykiss) and Siberian sturgeon (Acipenser baerii)
B. Sarosiek, J. Glogowski, B.I. Cejko, R. Kujawa, M. Szczepkowski, H. Kuźmiński, S. Dobosz, R.K. Kowalski
Theriogenology, 2014
The effect of cyclooxygenase (COX) inhibitors on Japanese medaka (Oryzias latipes) reproduction parameters fed with high level of arachidonic acid (20:4 n-6)
Agata Kowalska, Radosław Kajetan Kowalski
Aquaculture International, 2014
Sperm quality and selected biochemical markers of seminal plasma at the beginning of the reproductive period of common carp, Cyprinus carpio L.
Beata Irena Cejko, Sławomir Krejszeff, Sylwia Judycka, Beata Sarosiek, Mariola Dietrich, Dariusz Kucharczyk, Radosław Kajetan Kowalski
Aquaculture International, 2014
Effect of albumin and casein supplementation on the common carp Cyprinus carpio L. sperm motility parameters measured by CASA
Radosław Kajetan Kowalski, Beata Irena Cejko, Sławomir Krejszeff, Beata Sarosiek, Sylwia Judycka, Katarzyna Targońska, Dariusz Kucharczyk, Jan Glogowski
Aquaculture International, 2014
Cryopreservation of Acropora digitifera sperm with use of sucrose and methanol based solution
Shun Ohki, Masaya Morita, Seiya Kitanobo, Agata A. Kowalska, Radosław Kajetan Kowalski
Cryobiology, 2014
Motility parameters of perch spermatozoa (Perca fluviatilis L.) with cryoprotectors addition
Beata Sarosiek, Sylwia Judycka, Dariusz Kucharczyk, Daniel Żarski, Radosław K. Kowalski
Aquaculture International, 2014
Motility parameters of perch spermatozoa (Perca fluviatilis L.) during short-term storage with antioxidants addition
Beata Sarosiek, Katarzyna Dryl, Dariusz Kucharczyk, Daniel Żarski, Radosław K. Kowalski
Aquaculture International, 2014
Effect of two commercial preparations containing different GnRH analogues with dopamine antagonists on barbel Barbus barbus (L.) sperm quantity and quality
Beata Irena Cejko, Daniel Żarski, Sylwia Judycka, Dariusz Kucharczyk, Beata Sarosiek, Radosław Kajetan Kowalski
Aquaculture International, 2014
Different computer-assisted sperm analysis (CASA) systems highly influence sperm motility parameters
S. Boryshpolets, R.K. Kowalski, G.J. Dietrich, B. Dzyuba, A. Ciereszko
Theriogenology, 2013
Effect of hormonal stimulation on milt volume, number of sperm, and sperm motility in the crucian carp, Carassius carassius (L.)
Israeli Journal of Aquaculture Bamidgeh, 2013
Application of Computer-assisted Sperm Analysis in Selecting the Suitable Solution for Common Carp, Cyprinus carpio L., Sperm Motility
Beata Irena Cejko, Beata Sarosiek, Radosław Kajetan Kowalski, Sławomir Krejszeff, Dariusz Kucharczyk
Journal of the World Aquaculture Society, 2013
Influence of antioxidants on spermatozoa in the short-term storage of salmonidae milt
Polish Journal of Natural Sciences, 2013
Isolation and characteristics of β-N-acetylglucosaminidase present in rainbow trout (Oncorhynchus mykiss) and Siberian sturgeon (Acipenser baerii) milt
B. Sarosiek, R. K. Kowalski, K. Dryl, J. Glogowski
Journal of Applied Ichthyology, 2012
The effectiveness of hormonal preparations (Ovopel, Ovaprim, LHRHa, hCG and CPE) in stimulating spermiation in dace Leuciscus leuciscus (L.)
B. I. Cejko, K. Targońska, R. K. Kowalski, D. Żarski, B. Sarosiek, D. Kucharczyk, J. Glogowski
Journal of Applied Ichthyology, 2012
Motility and fertilizing capacity of frozen/thawed sperm of Siberian sturgeon after a short-time exposure of fresh semen to mercury and cadmium
G. J. Dietrich, A. Ciereszko, R. K. Kowalski, A. Rzemieniecki, E. Bogdan, W. Demianowicz, M. Dietrich, R. Kujawa, J. Glogowski
Journal of Applied Ichthyology, 2012
Spermatozoa motility and short-term sperm storage of colourful orfe (Leuciscus idus aberr orfus)
Beata Sarosiek, Beata I. Cejko, Jan Glogowski, Katarzyna Targońska, Daniel Żarski, Radosław K. Kowalski, Dariusz Kucharczyk
Italian Journal of Animal Science, 2012
The influence of the length of time after hormonal treatment with [(d-Ala6, Pro9 NEt)-mGnRH+metoclopramide] i.e. Ovopel on barbel Barbus barbus (L.) milt quality and quantity indicators
B. I. Cejko, R. K. Kowalski, D. Żarski, K. Dryl, K. Targońska, R. Chwaluczyk, D. Kucharczyk, J. Glogowski
Journal of Applied Ichthyology, 2012
Temporal changes in motility parameters of dace Leuciscus Leuciscus (L.) sperm obtained from spermatic ducts and directly from testicles
Polish Journal of Natural Sciences, 2012
Quality and quantity of smelt (Osmerus eperlanus L.) Sperm in relation to time after hormonal stimulation
Radosław K. Kowalski, Piotr Hliwa, Beata I. Cejko, Jarosław Król, Robert Stabiński, Andrzej Ciereszko
Reproductive Biology, 2012
Artificial reproduction of wild and cultured barbel (Barbus barbus, Cyprinidae) under controlled conditions
Katarzyna Targońska, Dariusz Kucharczyk, Daniel Żarski, Beata Cejko, Sławomir Krejszeff, Krzysztof Kupren, Radosław Król, Katarzyna Dryl, Radosław Kowalski, Jan Glogowski
Acta Veterinaria Hungarica, 2011
The effect of selective cyclooxygenase (COX) inhibitors on japanese medaka (Oryzias latipes) reproduction parameters
World Academy of Science Engineering and Technology, 2011
Quantitative characteristics of rainbow trout, oncorhynchus mykiss, neo-males (XX genotype) and super-males (YY genotype) sperm
World Academy of Science Engineering and Technology, 2011
Proteolytic and anti-proteolytic activity in the seminal plasma of Eurasian perch (Perca fluviatilis L.) during the spawning period
J. Król, R. Kowalski, K. Demska-Zakęś, P. Hliwa, J. Glogowski
Czech Journal of Animal Science, 2011
Effect of time after hormonal stimulation on semen quality indicators of common carp, cyprinus carpio (actinopterygii: Cypriniformes: Cyprinidae)
Beata I. Cejko, Radosław K. Kowalski, Dariusz Kucharczyk, Daniel Zarski, Katarzyna Targońska, Jan Glogowski
Acta Ichthyologica Et Piscatoria, 2011
Influence of temperature on the effectiveness of the hormonal stimulation of male ide, leuciscus idus (L.)
Beata Cejko, Dariusz Kucharczyk, Katarzyna Targońska, Daniel Żarski, Beata Sarosiek, Radosław Kowalski, Jan Glogowski
Archives of Polish Fisheries, 2010
Impact of dibutyl phthalate and benzyl butyl phthalate on motility parameters of sperm from the European pikeperch Sander lucioperca (L.)
Sylwia Jarmołowicz, Krystyna Demska-Zakęś, Radosław Kowalski, Beata Cejko, Jan Glogowski, Zdzisław Zakęś
Archives of Polish Fisheries, 2010
Exposure of rainbow trout milt to mercury and cadmium alters sperm motility parameters and reproductive success
Grzegorz J. Dietrich, Mariola Dietrich, R.K. Kowalski, Stefan Dobosz, Halina Karol, Wiesław Demianowicz, Jan Glogowski
Aquatic Toxicology, 2010
Influence of the length of time after hormonal stimulation on selected parameters of milt of ide Leuciscus idus L.
Beata Irena Cejko, Radosław Kajetan Kowalski, Dariusz Kucharczyk, Katarzyna Targońska, Sławomir Krejszeff, Daniel Żarski, Jan Glogowski
Aquaculture Research, 2010
The effects of commercial preparations containing two different GnRH analogues and dopamine antagonists on spermiation and sperm characteristics in the European smelt Osmerus eperlanus (L.)
J. Król, R.K. Kowalski, P. Hliwa, G.J. Dietrich, R. Stabiński, A. Ciereszko
Aquaculture, 2009
Protein profile of the polar fox's semen plasma at the beginning and at the end of the reproductive season
Medycyna Weterynaryjna, 2008
Isolation and preliminary characteristics of β-N-acetylglucosaminidase in the sperm of Siberian sturgeon (Acipenser baerii) and rainbow trout (Oncorhynchus mykiss)
B. Sarosiek, R. Kowalski, J. Glogowski
Journal of Applied Ichthyology, 2008
Prostaglandins in rainbow trout (Oncorhynchus mykiss Walbaum, 1792) sperm biology - Searching for answers
R. K. Kowalski, K. Shiba, M. Yoshida, J. Glogowski
Journal of Applied Ichthyology, 2008
The influence of polychlorinated biphenyls (PCBs) on computer analysed sperm motility of common carp (Cyprinus carpio L.) in vitro
Cybium, 2008
Improvement of the cryopreservation of red deer (Cervus elaphus L.) semen collected with an artificial vagina
Medycyna Weterynaryjna, 2008
Description Of Pikeperch, Sander Lucioperca (L.), Semen Obtained From Males Held Under Different Rearing Conditions
Beata Cejko, Jan Glogowski, Radosław Kowalski, Dariusz Kucharczyk, Katarzyna Targońska
Archives of Polish Fisheries, 2008
Aromatase expression in testes of XY, YY, and XX rainbow trout (Oncorhynchus mykiss)
Malgorzata Kotula-Balak, Renata Zielińska, Jan Glogowski, Radosław K. Kowalski, Beata Sarosiek, Barbara Bilińska
Comparative Biochemistry and Physiology A Molecular and Integrative Physiology, 2008
Characterization of whitefish (Coregonus lavaretus) sperm motility: Effects of pH, cations and ovarian fluid
Advances in Limnology, 2007
Milt characteristics in European whitefish (Coregonus lavaretus) in relation to season and hormonal stimulation with a gonadotropin-releasing hormone analogue, azagly-nafarelin
Advances in Limnology, 2007
Characteristics of acid phosphatase from Russian sturgeon (Acipenser gueldenstaedtii) spermatozoa
Beata Sarosiek, Joanna Wysocka, Paweł Wysocki, Radosław Kowalski, Jan Glogowski
Journal of Applied Ichthyology, 2006
Semen biology and stimulation of milt production in the European smelt (Osmerus eperlanus L.)
R.K. Kowalski, P. Hliwa, A. Andronowska, J. Król, G.J. Dietrich, M. Wojtczak, R. Stabiński, A. Ciereszko
Aquaculture, 2006
Influence of heavy metals and 4-nonylphenol on reproductive function in fish.
Reproductive Biology, 2006
Gelatinases and serine proteinase inhibitors of seminal plasma and the reproductive tract of turkey (Meleagris gallopavo)
M. Kotłowska, R. Kowalski, J. Glogowski, J. Jankowski, A. Ciereszko
Theriogenology, 2005
Motility parameters of rainbow trout (Oncorhynchus mykiss) spermatozoa in relation to sequential collection of milt, time of post-mortem storage and anesthesia
G. J. Dietrich, R. Kowalski, M. Wojtczak, S. Dobosz, K. Goryczko, A. Ciereszko
Fish Physiology and Biochemistry, 2005
Assessment of water turbidity for evaluation of rainbow trout (Oncorhynchus mykiss) egg quality
Mariola Wojtczak, Radosław Kowalski, Stefan Dobosz, Krzysztof Goryczko, Henryk Kuźminski, Jan Glogowski, Andrzej Ciereszko
Aquaculture, 2004
Characterization of gelatinolytic activity in seminal plasma of some teleost fish
R. Kowalski, J. Glogowski, D. Kucharczyk, M. Mak, S. Dobosz, Z. Zakes, A. Ciereszko
Aquaculture International, 2004
Proteolytic activity and electrophoretic profiles of proteases from seminal plasma of teleosts
R. Kowalski, J. Glogowski, D. Kucharczyk, K. Goryczko, S. Dobosz, A. Ciereszko
Journal of Fish Biology, 2003
Gelatinolytic and anti-trypsin activities in seminal plasma of common carp: Relationship to blood, skin mucus and spermatozoa
R Kowalski
Aquatic Living Resources, 2003
Fertilization rate of Siberian sturgeon (Acipenser baeri, Brandt) milt cryopreserved with methanol
J Glogowski, R Kolman, M Szczepkowski, Á Horváth, B Urbányi, P Sieczyński, A Rzemieniecki, J Domagała, W Demianowicz, R Kowalski, A Ciereszko
Aquaculture, 2002

Radoslaw Kajetan Kowalski

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