Protistology

Protistology is a scientific discipline devoted to the study of protists, a highly diverse group of eukaryotic organisms. All eukaryotes apart from animals, plants and fungi are considered protists. Its field of study therefore overlaps with the more traditional disciplines of phycology, mycology, and protozoology, just as protists embrace mostly unicellular organisms described as algae, some organisms regarded previously as primitive fungi, and protozoa ("animal" motile protists lacking chloroplasts). They are a paraphyletic group with very diverse morphologies and lifestyles. Their sizes range from unicellular picoeukaryotes only a few micrometres in diameter to multicellular marine algae several metres long. The history of the study of protists has its origins in the 17th century. Since the beginning, the study of protists has been intimately linked to developments in microscopy, which have allowed important advances in the understanding of these organisms due to their generally microscopic nature. Among the pioneers was Anton van Leeuwenhoek, who observed a variety of free-living protists and in 1674 named them “very little animalcules”. During the 18th century studies on the Infusoria were dominated by Christian Gottfried Ehrenberg and Félix Dujardin. The term "protozoology" has become dated as understanding of the evolutionary relationships of the eukaryotes has improved, and is frequently replaced by the term "protistology". For example, the Society of Protozoologists, founded in 1947, was renamed International Society of Protistologists in 2005. However, the older term is retained in some cases (e.g., the Polish journal Acta Protozoologica). Dedicated academic journals include: Archiv für Protistenkunde, 1902-1998, Germany (renamed Protist, 1998-); Archives de la Societe Russe de Protistologie, 1922-1928, Russia; Journal of Protozoology, 1954-1993, USA (renamed Journal of Eukaryotic Microbiology, 1993-); Acta Protozoologica, 1963-, Poland; Protistologica, 1968-1987, France (renamed European Journal of Protistology, 1987-); Japanese Journal of Protozoology, 1968-2017, Japan (renamed Journal of Protistology, 2018-); Protistology, 1999-, Russia.