Protistology is a scientific discipline devoted to the study of
protists
A protist ( ) or protoctist is any Eukaryote, eukaryotic organism that is not an animal, Embryophyte, land plant, or fungus. Protists do not form a Clade, natural group, or clade, but are a Paraphyly, paraphyletic grouping of all descendants o ...
, a highly diverse group of
eukaryotic
The eukaryotes ( ) constitute the Domain (biology), domain of Eukaryota or Eukarya, organisms whose Cell (biology), cells have a membrane-bound cell nucleus, nucleus. All animals, plants, Fungus, fungi, seaweeds, and many unicellular organisms ...
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
Mycology is the branch of biology concerned with the study of fungus, fungi, including their Taxonomy (biology), taxonomy, genetics, biochemistry, biochemical properties, and ethnomycology, use by humans. Fungi can be a source of tinder, Edible ...
, and
protozoology, just as protists embrace mostly
unicellular
A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Organisms fall into two general categories: prokaryotic organisms and ...
organisms described as
algae
Algae ( , ; : alga ) is an informal term for any organisms of a large and diverse group of photosynthesis, photosynthetic organisms that are not plants, and includes species from multiple distinct clades. Such organisms range from unicellular ...
, some organisms regarded previously as primitive
fungi
A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...
, and
protozoa
Protozoa (: protozoan or protozoon; alternative plural: protozoans) are a polyphyletic group of single-celled eukaryotes, either free-living or parasitic, that feed on organic matter such as other microorganisms or organic debris. Historically ...
("animal" motile protists lacking chloroplasts).
They are a
paraphyletic group
Paraphyly is a taxonomic term describing a grouping that consists of the grouping's last common ancestor and some but not all of its descendant lineages. The grouping is said to be paraphyletic ''with respect to'' the excluded subgroups. In con ...
with very diverse morphologies and lifestyles. Their sizes range from unicellular
picoeukaryotes only a few micrometres in diameter to multicellular
marine algae
Marine is an adjective meaning of or pertaining to the sea or ocean.
Marine or marines may refer to:
Ocean
* Maritime (disambiguation)
* Marine art
* Marine biology
* Marine current power
* Marine debris
* Marine energy
* Marine habitats
* M ...
several metres long.
History
The history of the study of protists has its origins in the
17th century
The 17th century lasted from January 1, 1601 (represented by the Roman numerals MDCI), to December 31, 1700 (MDCC).
It falls into the early modern period of Europe and in that continent (whose impact on the world was increasing) was characterized ...
. Since the beginning, the study of protists has been intimately linked to developments in
microscopy
Microscopy is the technical field of using microscopes to view subjects too small to be seen with the naked eye (objects that are not within the resolution range of the normal eye). There are three well-known branches of microscopy: optical mic ...
, which have allowed important advances in the understanding of these organisms due to their generally microscopic nature. Among the pioneers was
Anton van Leeuwenhoek
Antonie Philips van Leeuwenhoek ( ; ; 24 October 1632 – 26 August 1723) was a Dutch microbiologist and microscopist in the Golden Age of Dutch art, science and technology. A largely self-taught man in science, he is commonly known as " ...
, who observed a variety of free-living protists and in 1674 named them “very little
animalcule
Animalcule (; ) is an archaic term for microscopic organisms that included bacteria, protozoans, and very small animals. The word was invented by 17th-century Dutch scientist Antonie van Leeuwenhoek to refer to the microorganisms he observed i ...
s”.
During the
18th century
The 18th century lasted from 1 January 1701 (represented by the Roman numerals MDCCI) to 31 December 1800 (MDCCC). During the 18th century, elements of Enlightenment thinking culminated in the Atlantic Revolutions. Revolutions began to ch ...
studies on the Infusoria were dominated by
Christian Gottfried Ehrenberg
Christian Gottfried Ehrenberg (19 April 1795 – 27 June 1876) was a German Natural history, naturalist, zoologist, Botany, botanist, comparative anatomist, geologist, and microscopy, microscopist. He is considered to be one of the most famous an ...
and
Félix Dujardin
Félix Dujardin (5 April 1801 – 8 April 1860) was a French biologist born in Tours. He is remembered for his research on protozoans and other invertebrates.
Biography
In 1840 Dujardin was appointed professor of geology and mineralogy at t ...
.
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'').
Journals and societies
Dedicated academic journals include:
* ''
Archiv für Protistenkunde'', 1902-1998, Germany (renamed ''
Protist
A protist ( ) or protoctist is any eukaryotic organism that is not an animal, land plant, or fungus. Protists do not form a natural group, or clade, but are a paraphyletic grouping of all descendants of the last eukaryotic common ancest ...
'', 1998-);
* ''
Archives de la Societe Russe de Protistologie'', 1922-1928, Russia;
* ''
Journal of Protozoology
A journal, from the Old French ''journal'' (meaning "daily"), may refer to:
*Bullet journal, a method of personal organization
*Diary, a record of personal secretive thoughts and as open book to personal therapy or used to feel connected to onesel ...
'', 1954-1993, USA (renamed ''
Journal of Eukaryotic Microbiology
The ''Journal of Eukaryotic Microbiology'' is a peer-reviewed scientific journal covering all aspects of eukaryotic microbiology. The journal publishes research on protists, including lower algae and fungi.
According to the ''Journal Citation Repo ...
'', 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.
Other less specialized journals, important to protistology before the appearance of the more specialized:
* ''
Comptes rendus de l'Académie des sciences
(, ''Proceedings of the Academy of Sciences''), or simply ''Comptes rendus'', is a French scientific journal published since 1835. It is the proceedings of the French Academy of Sciences. It is currently split into seven sections, published o ...
'', 1666-, France;
* ''
Quarterly Journal of Microscopical Science'', 1853-1966, UK (renamed ''
Journal of Cell Science'', 1966-);
* ''
Archiv für mikroskopische Anatomie'', 1865-1923, Germany;
* ''
Transactions of the Microscopical Society'', 1841-1869, UK (renamed ''
Journal of Microscopy'', 1869-);
* ''
Transactions of the American Microscopical Society'', 1880-1994, USA (renamed ''
Invertebrate Biology'', 1995-);
* ''
Memórias do Instituto Oswaldo Cruz
''Memórias do Instituto Oswaldo Cruz'' ( Portuguese for "Memoirs of the Oswaldo Cruz Institute") is a peer-reviewed open access medical journal covering parasitology, microbiology, and tropical medicine. It was established in 1909 by the Brazilia ...
'', 1909-, Brazil.
Some societies:
*
Society of Protozoloogists, 1947-2005, USA (renamed
International Society of Protistologists, 2005-), with many affiliates;
*
International Society for Evolutionary Protistology, 1975, USA.
* Protistology UK (previously British Society for Protist Biology)
* International Society of Protistologists (previously the Society of Protozoologists)
Notable protistologists (sorted by alphabetical order of surnames)
The field of protistology was idealized by Haeckel, but its widespread recognition is more recent. In fact, many of the researchers cited below considered themselves as protozoologists, phycologists, mycologists, microbiologists, microscopists, parasitologists, limnologists, biologists, naturalists, zoologists, botanists, etc., but made significant contributions to the field.
References
External links
*
Portal to protistologyby th
International Society of Protistologists
{{Branches of biology
.
.
Branches of biology