1. Department of Biology, University of Pisa, Pisa, Italy
2. CIME, Centro Interdipartimentale di Microscopia Elettronica, University of Pisa, Pisa, Italy
3. CISUP, Centro per l’Integrazione della Strumentazione, University of Pisa, Pisa, Italy
4. Department of Clinical and Experimental Medicine, University of Pisa, Pisa, Italy
5. Centro Romeo ed Enrica Invernizzi Ricerca Pediatrica, Department of Biosciences, University of Milan, Milan, Italy
6. Institute of Hydrobiology, Dresden University of Technology, Dresden, Germany
7. Department of River Ecology, Helmholtz Center for Environmental Research—UFZ, Magdeburg, Germany
8. Department of Cytology and Histology, Faculty of Biology, Saint Petersburg State University, Saint Petersburg, Russia
9. Department of Invertebrate Zoology, Saint Petersburg State University, Saint Petersburg, Russia