Katarzyna Wojczulanis-Jakubas

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Recently published


Breeding phased dependent oxidative balance in a small High Arctic seabird, the little auk


Kulaszewicz I, Wojczulanis-Jakubas K, Jakubas D


Reproduction is a demanding phase of bird’s life cycle and imposes various physiological challenges. Here, we examined the cost of incubation and chick rearing period in males and females little auks (Alle alle). We expected increase in OS with the progress of breeding period (due to increasing energetic demands) and higher values in females (due to high initial investments in production of a large egg). Surprisingly, we found higher OS during incubation compared to chick‐rearing period, suggesting that incubation is a highly demanding reproductive phase in terms of oxidative balance. Also, in contrasts to our expectations, we did not find sex differences in OS throughout the studied periods of breeding. Here, you can find more detailed results and their full interpretation.



Isohypsibius karenae


New species of Tardigrada on Spitsbergen


New species of tiny water bear (Tardigrada) was found and described by Polish reasercher, Krzysztof Zawierucha. The guy was named after me, as I was the one who picked up the precious sample from the ground :)

"Etymology.— Karen means Katarzyna in Norwegian. I dedicate this new species to Katarzyna Wojczulanis−Jakubas from the University of Gdańsk (Poland) who collected the material."


Thank you Krzysztof!