Janos Ujszegi
I graduated from Eötvös Loránd University, at the specialization of Ecology, Evolutionary and Conservation Biology in 2014. Since then I am working in the Lendület Evolutionary Ecology Research Group as a PhD student. My research focuses on the phenotypic plasticity and evolutionary ecology of amphibian chemical defenses against pathogens, with particular regard to the amphibian chytrid fungus Batrachochytrium dendrobatidis. The main examined antimicrobial chemical compounds are antimicrobial peptides from Rana dalmatina and the toxins (bufadienolides) of Bufo bufo. I conduct laboratory experiments and also a lot of fieldwork in the Pilis Mountains, Hungary. Formerly I participated in mesocosm and laboratory experiments with herbicides and amphibians. Beside these, I often join herpetofauna surveys in Hungary and abroad (Slovakia, Croatia, Albania, Greece).

Contacts

Address here.
Phone: +36 1 3918607
E-mail: ujszegi.janos@agrar.mta.hu

Publications

Reprints from here.

Ujszegi J., Móricz Á.M., Krüzselyi D., Hettyey A. 2017. Skin toxin production of toads changes during early ontogeny but is not adjusted to the microbiota of the aquatic environment. Evolutionary Ecology 31: 925–936.

Mikó Zs., Ujszegi J., Hettyey A. 2017. Age-dependent changes in sensitivity to a pesticide in tadpoles of the common toad (Bufo bufo). Aquatic Toxicology 187: 48-54.

Mikó Zs., Ujszegi J., Gál Z., Hettyey A. 2017. Effects of a glyphosate-based herbicide and predation threat on the behaviour of agile frog tadpoles. Ecotoxicology and Environmental Safety 140: 96–102.

Mikó Z., Ujszegi J., Gál Z., Hettyey A. 2017. Standardize or diversify experimental conditions in ecotoxicology? A case study on herbicide toxicity to larvae of two anuran amphibians. Archives of Environmental Contamination and Toxicology 73: 562–569.

Ujszegi J., Gál Z., Mikó Zs., Hettyey A. 2016. No effect of a glyphosate-based herbicide on larval dragonflies (Aeshna cyanea) and adult newts (Lissotriton vulgaris) in a laboratory-based experiment. Acta Zoologica Academiae Scientiarum Hungaricae 62: 355–367.

Bókony V., Móricz Á.M., Tóth Zs., Gál Z., Kurali A., Mikó Zs., Pásztor K., Szederkényi M., Tóth Z., Ujszegi J., Üveges B.,  Krüzselyi D., Capon R.J., Hoi H., Hettyey A. 2016. Variation in chemical defense among natural populations of common toad (Bufo bufo) tadpoles: the role of environmental factors. Journal of Chemical Ecology 42: 329-338.

Ujszegi J., Gál, Z., Mikó Zs., Hettyey A. 2015. No observable effect of a glyphosate-based herbicide on two top predators of temporal water bodies. Environmental Toxicology and Chemistry 34: 307-313.

Mikó Zs., Ujszegi J., Gál Z., Imrei Z., Hettyey A. 2015. Choice of experimental venue matters in ecotoxicology studies: Comparison of a laboratory-based and an outdoor mesocosm experiment. Aquatic Toxicology 167: 20-30.

Hettyey A., Vági B., Kovács T., Ujszegi J., Katona P., Szederkényi M., Pearman P.B., Griggio M., Hoi H. 2014. Reproductive interference between Rana dalmatina and R. temporaria affects reproductive success in natural populations. Oecologia 176: 457-464.