K. Formicki
West Pomeranian University of Technology
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Featured researches published by K. Formicki.
Archives of Polish Fisheries | 2013
K. Formicki; Joanna Szulc; A. Tański; Agata Korzelecka-Orkisz; Andrzej Witkowski; Przemys aw Kwiatkowski
Abstract The distribution range of Danube huchen, Hucho hucho (L.) in Polish waters is decreasing, and is currently only 25 to 30% of its original area. Since few data are available concerning Danube huchen, it is necessary to develop a better understanding of its reproduction to improve artificial spawning in hatcheries. Eight sperm motility parameters were assessed using CASA after short-term storage in a static magnetic field. The effect of magnetic field exposure on spermatozoa at fertilization and on sperm morphology (SEM) was also examined. Static magnetic fields had a positive effect on sperm motility parameters, including VCL, which determines fertilization effectiveness; values for this parameter after a 24 h exposure period to fields of different intensity were as follows: 1 mT - 110.09 μm s-1; 5 mT - 111.65 μm s-1; 10 mT - 152.10 μm s-1; control - 102.09 μm s-1. Egg fertilization rates of spermatozoa held for 24 hours in fields of 1mT was 71.32%, 5mT - 58.23%, and 10mT - 59.99%, and in the control - 32.60%. The mean length of spermatozoa was 27.14 ±0.22 μm; the head was elongate; length without the neck was 2.80 ±0.19 μm; the width was 2.0 ±0.08 μm. This study suggests that the method of exposing sperm to magnetic fields might, after more extensive studies, could be used for short-term sperm storage.
Journal of Ichthyology | 2014
Małgorzata Bonisławska; A. Tański; A. Brysiewicz; Agata Korzelecka-Orkisz; W. Wawrzyniak; K. Formicki
The results obtained indicate the potential of the round goby to reproduce in fresh water, which may result in further expansion of the species to upper reaches of rivers and to other water bodies (lakes, dam reservoirs). Embryonic development of the round goby in fresh water proceeded in a regular manner. However, embryonic development in fresh water took a shorter time than in saline water. Although the newly hatched larvae were somewhat smaller than those hatching from eggs kept in saline water, the hatching rate was high (90%). If the species finds conditions suitable for reproduction in Polish freshwater bodies, it may pose a threat to numerous native freshwater fish species by taking over both their feeding and reproductive niches.
Central European Journal of Biology | 2014
Małgorzata Bonisławska; A. Tański; Joanna Szulc; Sylwia Machula; K. Formicki
Effects of water salinity (3.0–9.0 PSU) on the duration and outcome of embryogenesis in the lesser sandeel (Ammodytes tobianus (L.) as well as on survival, size, and malformation rate of the newly hatched larvae were followed, based on observations involving equipment consisting of a microscope and still and digital cameras. The images obtained and measurements of egg and larval dimensions were analyzed using the NIS elements Br. computer software package. The lowest salinity tested (3.0 PSU), similar to that in the inshore Baltic Sea waters native for the species studied, produced a lower fertilization rate and resulted in extended embryogenesis, reduced embryo survival, changes in the hatch size, and increased larval malformation rate. The high-end salinity (7.5–9.0 PSU), higher than that prevailing in the species’s spawning grounds in the Baltic Sea, resulted — similarly to the low-end salinity — in disturbed development and growth of the embryos.
The European Zoological Journal | 2017
A. Brysiewicz; K. Formicki; A. Tański; P. Wesołowski
Abstract The effects of a magnetic field (1, 3 and 5 mT), applied during short- (1, 3, 5, 30 and 60 minutes) and long-term (from the beginning of embryogenesis) exposure, on melanophores of the European whitefish, Coregonus lavaretus and vendace, Coregonus albula, were investigated. Short-term magnetic field exposure effects on the behaviour of melanophores at the stage when the eye and body pigment on whitefish and vendace were distinctly visible in the embryos. The short-term embryo exposure to the magnetic fields induced the pigment of the body cells to move to the central parts of the cells. In the control, we did not observe displacement of the pigment within the melanophores. The long-term exposure to the magnetic field was found to delay the pigment appearance in the eyeballs and on the body of embryos of both investigated species. The number of melanophores in the body of embryos exposed to the magnetic fields was lower than that in the control. The pigment showed an increasing tendency to concentrate in individual embryonic and larval cells with increasing magnetic field strength. Melanophore index in embryos and larvae of whitefish and vendace was found to differ significantly between the control and all the magnetic field treatments. Our results can be extrapolated to other organisms and will allow us to broaden the knowledge on pigment cell magnetoreception in vertebrates.
Journal of Applied Ichthyology | 2015
K. Formicki; Joanna Szulc; Agata Korzelecka-Orkisz; A. Tański; J. K. Kurzydłowski; J. Grzonka; P. Kwiatkowski
Electronic Journal of Polish Agricultural Universities. Series Fisheries | 2015
K. Mazurkiewicz-Zapałowicz; M. Twarużek; K. Formicki; B. Korzelecka-Orkisz; M. Wolska; A. Tański; Joanna Szulc
Crustaceana | 2011
Dorota Pawlos; Agata Korzelecka-Orkisz; Elżbieta Rościszewska; K. Formicki
Crustaceana | 2010
Dorota Pawlos; K. Formicki; Agata Korzelecka-Orkisz; Aleksander Winnicki
Archives of Polish Fisheries | 2001
A. Winnicki; A. Korzelecka; M. Bonislawska; K. Formicki
Journal of Applied Ichthyology | 2016
Agata Korzelecka-Orkisz; K. Formicki; Joanna Szulc; A. Tański; K. Mazurkiewicz-Zapałowicz; M. Twarużek; J. Grzonka; K. J. Kurzydłowski