You are viewing this Regn. as classified by:

Articles on this page are available in 1 other language: French (1) (learn more)

Overview

Comprehensive Description

Protozoa: a now obsolete term that referred to colorless protists and included flagellates, ciliates, amoebae and sporozoa. The protozoa were all thought to be single celled eukaryotes. The concept was popular for much of the 20th century, but it has become clear that some are relatives of animals and fungi, others have closer relationships with algae than with other protozoa, and that protozoa are not closely related. The term has largely fallen into disuse.

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

Supplier: Paddy Patterson

Trusted

Article rating from 1 person

Average rating: 3.0 of 5

Ecology

Associations

In Great Britain and/or Ireland:
Foodplant / feeds on
Rhizophydium gibbosum feeds on cyst of Protozoa

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Known predators

protozoa (protozoa (unspecified)) is prey of:
Crustacea
Entomostraca
Rotifera
Tardigrada
Nematoda
Oligochaeta
zooplankton
Actinopterygii
Polychaeta
Synchaeta
Polyarthra
Conochilus
Daphnia
Bosmina
Eudiaptomus
Mysidacea
Ostracoda
Euphausiacea
Hyperiidea
Cyclopoida
Calanoida
Chaetognatha
Tripteroides
Culex
Uranotaenia
Hydropsyche
Salmo salar
Phoxinus phoxinus

Based on studies in:
USA: California (Estuarine, Intertidal, Littoral)
Norway: Spitsbergen (Coastal)
New Zealand (Grassland)
Finland (Lake or pond, Pelagic)
South Africa (Desert or dune)
Russia (Lake or pond)
Pacific (Marine, Tropical)
Malaysia, W. Malaysia (Plant substrate)
Wales, Dee River (River)

This list may not be complete but is based on published studies.
  • G. E. MacGinitie, Ecological aspects of a California marine estuary, Am. Midland Nat. 16(5):629-765, from p. 652 (1935).
  • A. C. Brown, Food relationships on the intertidal sandy beaches of the Cape Peninsula, S. Afr. J. Sci. 60:35-41, from p. 39 (1964).
  • E. A. Shushkina and M. E. Vinogradov, Trophic relationships in communities and the functioning of marine ecosystems: II. Some results of investigations on the pelagic ecosystem in tropical regions of the ocean. In: Marine Production Mechanisms, M. J. Dun
  • R. A. Beaver, Fauna and food webs of pitcher plants in West Malaysia, The Malayan Nature Journal 33(1):1-10, from p. 8 (1979).
  • R. M. Badcock, 1949. Studies in stream life in tributaries of the Welsh Dee. J. Anim. Ecol. 18:193-208, from pp. 202-206 and Price, P. W., 1984, Insect Ecology, 2nd ed., New York: John Wiley, p. 23
  • K. Paviour-Smith, The biotic community of a salt meadow in New Zealand, Trans. R. Soc. N.Z. 83(3):525-554, from p. 542 (1956).
  • J. Sarvala, Paarjarven energiatalous, Luonnon Tutkija 78(4-5):181-190, from p. 184 (1974).
  • Y. I. Sorokin, Biological productivity of the Rybinsk reservoir. In: Productivity Problems of Freshwaters, Z. Kajak and A. Hillbricht-Ilkowska, Eds. (Polish Scientific, Warsaw, 1972), pp. 493-503, from p. 497.
  • V. S. Summerhayes and C. S. Elton, Contributions to the ecology of Spitsbergen and Bear Island, J. Ecol. 11:214-286, from p. 232 (1923).
Creative Commons Attribution 3.0 (CC BY 3.0)

© SPIRE project

Source: SPIRE

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Known prey organisms

protozoa (protozoa (unspecified)) preys on:
primary producers
detritus
algae
bacteria
phytoplankton
bacterioplankton
allochthonous organic matter
Insecta
fungi

Based on studies in:
USA: California (Estuarine, Intertidal, Littoral)
South Africa (Desert or dune)
Pacific (Marine, Tropical)
Malaysia, W. Malaysia (Plant substrate)
USA: Florida, Everglades (Estuarine)
Norway: Spitsbergen (Coastal)
New Zealand (Grassland)
Russia (Lake or pond)
Finland (Lake or pond, Pelagic)
unknown (Soil)

This list may not be complete but is based on published studies.
  • G. E. MacGinitie, Ecological aspects of a California marine estuary, Am. Midland Nat. 16(5):629-765, from p. 652 (1935).
  • A. C. Brown, Food relationships on the intertidal sandy beaches of the Cape Peninsula, S. Afr. J. Sci. 60:35-41, from p. 39 (1964).
  • E. A. Shushkina and M. E. Vinogradov, Trophic relationships in communities and the functioning of marine ecosystems: II. Some results of investigations on the pelagic ecosystem in tropical regions of the ocean. In: Marine Production Mechanisms, M. J. Dun
  • R. A. Beaver, Fauna and food webs of pitcher plants in West Malaysia, The Malayan Nature Journal 33(1):1-10, from p. 8 (1979).
  • W. E. Odum and E. J. Heald, The detritus-based food web of an estuarine mangrove community, In Estuarine Research, Vol. 1, Chemistry, Biology and the Estuarine System, Academic Press, New York, pp. 265-286, from p. 281 (1975).
  • K. Paviour-Smith, The biotic community of a salt meadow in New Zealand, Trans. R. Soc. N.Z. 83(3):525-554, from p. 542 (1956).
  • J. Sarvala, Paarjarven energiatalous, Luonnon Tutkija 78(4-5):181-190, from p. 184 (1974).
  • C. Morley, Personal communication (1981).
  • Y. I. Sorokin, Biological productivity of the Rybinsk reservoir. In: Productivity Problems of Freshwaters, Z. Kajak and A. Hillbricht-Ilkowska, Eds. (Polish Scientific, Warsaw, 1972), pp. 493-503, from p. 497.
  • V. S. Summerhayes and C. S. Elton, Contributions to the ecology of Spitsbergen and Bear Island, J. Ecol. 11:214-286, from p. 232 (1923).
Creative Commons Attribution 3.0 (CC BY 3.0)

© SPIRE project

Source: SPIRE

Trusted

Article rating from 0 people

Average rating: 2.5 of 5

Evolution and Systematics

Functional Adaptations

Functional adaptation

Cellulose digested for fuel: protozoans
 

Mixotricha protozoans digests cellulose for termite metabolism.

   
  "Termites harbor in their digestive system protozoa called mixotrichs that are critical to their ability to get energy by digesting cellulose." (Vogel 1998:29)
  Learn more about this functional adaptation.
  • Vogel, S. 1998. Cats' Paws and Catapults: Mechanical Worlds of Nature and People. New York: WW Norton & Company.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© The Biomimicry Institute

Source: AskNature

Trusted

Article rating from 1 person

Average rating: 1.0 of 5

Functional adaptation

Microscopic oars move organism: protozoan
 

Bundles of microtubules projecting from the microscopic Sticholonche zanclea move the protozoans along through a rowing motion.

   
  "At least one odd actinopod, heliozoan protozoan, Sticholonche, rows along with oars made of bundles of microtubules that emerge from the nuclear membrane through microfibrillar oarlocks. These form the central axes of external cytoplasmic protrusions--oars of a sort (Cachon and Cachon 1978; Margulis and Schwartz 1998)." (Vogel 2003:450)
  Learn more about this functional adaptation.
  • Steven Vogel. 2003. Comparative Biomechanics: Life's Physical World. Princeton: Princeton University Press. 580 p.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© The Biomimicry Institute

Source: AskNature

Trusted

Article rating from 1 person

Average rating: 1.0 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!