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Dive into the research topics where K. Formicki is active.

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Featured researches published by K. Formicki.


Archives of Polish Fisheries | 2013

The effect of static magnetic field on Danube huchen, Hucho hucho (L.) sperm motility parameters

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

Peculiarities of embryonic development of round goby Neogobius melanostomus (Gobiidae) in fresh water

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

Water salinity effects on embryogenesis of the lesser sandeel, Ammodytes tobianus (Linnaeus, 1758)

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

Magnetic field effect on melanophores of the European whitefish Coregonus lavaretus (Linnaeus, 1758) and vendace Coregonus albula (Linnaeus, 1758) (Salmonidae) during early embryogenesis

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

The effect of a magnetic field on trout (Salmo trutta Linnaeus, 1758) sperm motility parameters and fertilisation rate

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

The effect of magnetic field on in vitro development of fungus-like organisms Saprolegnia parasitica on selected microbiological media

K. Mazurkiewicz-Zapałowicz; M. Twarużek; K. Formicki; B. Korzelecka-Orkisz; M. Wolska; A. Tański; Joanna Szulc


Crustaceana | 2011

Egg case ultrastructure in the narrow-clawed crayfish Astacus leptodactylus Eschscholtz, 1823 (Decapoda, Astacidae)

Dorota Pawlos; Agata Korzelecka-Orkisz; Elżbieta Rościszewska; K. Formicki


Crustaceana | 2010

Hatching Process in the Signal Crayfish, Pacifastacus Leniusculus (Dana, 1852) (Decapoda, Astacidae)

Dorota Pawlos; K. Formicki; Agata Korzelecka-Orkisz; Aleksander Winnicki


Archives of Polish Fisheries | 2001

BIPARTITY OF THE YOLK SAC IN CYPRINID EMBRYOS

A. Winnicki; A. Korzelecka; M. Bonislawska; K. Formicki


Journal of Applied Ichthyology | 2016

Modulating effect of a magnetic field on Saprolegnia parasitica, Coker, 1923 infecting trout (Salmo trutta, L.) eggs

Agata Korzelecka-Orkisz; K. Formicki; Joanna Szulc; A. Tański; K. Mazurkiewicz-Zapałowicz; M. Twarużek; J. Grzonka; K. J. Kurzydłowski

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A. Tański

West Pomeranian University of Technology

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Agata Korzelecka-Orkisz

West Pomeranian University of Technology

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Joanna Szulc

West Pomeranian University of Technology

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K. Mazurkiewicz-Zapałowicz

West Pomeranian University of Technology

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J. Grzonka

Warsaw University of Technology

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M. Twarużek

Kazimierz Wielki University in Bydgoszcz

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M. Wolska

West Pomeranian University of Technology

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Małgorzata Bonisławska

West Pomeranian University of Technology

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Aleksander Winnicki

West Pomeranian University of Technology

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B. Korzelecka-Orkisz

West Pomeranian University of Technology

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