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Petr Jan Juračka

My research

I work on two independent topics at the Department of Ecology - metacommunities of the freshwater invertebrates and taxonomy & morphology of the cladocerans. I am interested especialy in are of PLA Kokořínsko in the Czech Republic, where we study newly created freshwater pools performing as the great study area for our ecological research, where we discovered and described a new species Daphnia hrbaceki in 2010.


Subjects I regularly teach at the Faculty of Science are held mostly in the Czech language. However, you can join us at least within Photography for Science (MBCPLUS004).

Science Communication

I perform within the Czech TV Nova regularly since 2015 in my series "Petrova divočina". However, since 2007 I gave more than 400 talks, from whose about 120 were focused on the science communication, biology or microphotography. Within the Czech Republic, the most important projects are Science Café, TEDx Prague, Café Nobel, Academia Film Olomouc, či přednášky pro základní a střední školy (např. evropské projekty Triangl či Trojlístek).


Photography is an essential part not only of my research, but also of my life at all. This is why I am also partly employed as the Faculty photographer. You can check it at my web, or Instagram.

Publications with the IF

  • P. J. Juračka, J. Dobiáš, D., Boukal, M. Šorf, L. Beran, M. Černý & A. Petrusek (2019): Spatial context strongly affects community composition of both passively and actively dispersing pool invertebrates in a highly heterogeneous landscape. Freshwater Biology  64: 2093–2106. DOI: 10.1111/fwb.13398 
  • M. Elías-Gutiérrez, P. J. Juračka, L. Montoliu-Elena, M. R. Miracle, A. Petrusek, Kořínek V. (2019): Who is Moina micrura? Redescription of one of the most confusing cladocerans from terra typica, based on integrative taxonomy.Limnetica 38(1): 227 - 252. DOI: 10.23818/limn.38.18
  • Juračka P.J., Declerck S.A.J., Vondrák D., Beran L., Černý M., Petrusek A. (2016): A naturally heterogeneous landscape can effectively slow down the dispersal of aquatic microcrustaceans. Oecologia 180(3): 785-796. DOI: 10.1007/s00442-015-3501-5
  • Juračka P.J., Sacherová V., Dobiášovská I., Bovšková D., Novosadová Z., Kořínek V., Petrusek A. (2016): Simplification of preparation techniques for scanning electron microscopy of Cladocera: preparing filtering limbs and ephippia for efficient studies of ultrastructure. Crustaceana 89, 47-62. DOI: 10.1163/15685403-00003513
  • Most M., Petrusek A., Sommaruga R., Juračka P.J., Slusarczyk M., Manca M., Spaak P. (2013): At the edge and on the top: molecular identification and ecology of Daphnia dentifera and D. longispina in high-altitude Asian lakes. Hydrobiologia 715 (1): 51-62. DOI: 10.1007/s10750-012-1311-x
  • Ďuriš Z., Horká I., Juračka P.J., Petrusek A., Sandford F. (2011): These squatters are not innocent: the evidence of parasitism in sponge-inhabiting shrimps. PLoS ONE 6(7): e21987. DOI: 10.1371/journal.pone.0021987
  • Juračka, P.J., C. Laforsch, Petrusek A. (2011): Neckteeth formation in two species of the Daphnia curvirostris complex. Journal of Limnology, 70(2), 1-10. DOI: 10.4081/jlimnol.2011.359
  • Juračka, P.J., V. Kořínek, Petrusek A. (2010): A new Central European species of the Daphnia curvirostris complex, Daphnia hrbaceki sp. nov. (Cladocera, Daphniidae). Zootaxa, 2718: 1-22

images in the scientific papers

  • Korábek O., Juřičková L., Petrusek A. (2014): Resurrecting Helix straminea, a forgotten escargot with trans-Adriatic distribution: first insights into the genetic variation within the genus Helix (Gastropoda: Pulmonata). Zoological Journal of the Linnean Society 171 (1): 72–91. DOI: 10.1111/zoj.12122
  • Lohr, J. N., C. Laforsch, et al. "A Daphnia Parasite (Caullerya mesnili) Constitutes a New Member of the Ichthyosporea, a Group of Protists near the Animal-Fungi Divergence." Journal of Eukaryotic Microbiology 57(4): 328-336.
  • von Vaupel Klein, J. C. (2010). "Pictures of crustacea taken by SEM - A collection of photographs by Petr J. Juracka." Crustaceana 83(4): 511
  • Ďuriš, Z., Horká, I. & Sandford, F., 2009. Periclimenaeus pectinidactylus n. sp. (Crustacea: Decapoda: Pontoniinae) from the Belizean Barrier Reef, Caribbean Sea. Zootaxa 2130: 31-40.
  • Hudec, R., Pina, L., Švéda, L., Inneman, A., Maršiová, V., Šimon, V.: 2009. Astronomical X-ray Telescopes and Monitors of Lobster Eye Type. Proceedings of Science, The Extreme sky: Sampling the Universe above 10 keV
  • Ďuriš, Z., Horká I. & I. Marin, 2008. Periclimenes sulcatus sp. nov., a new pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from Vietnam. Zootaxa 1860: 35-50.

Scientific journals with my images on their covers











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