Protozoan

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Related to protozoans: paramecium

protozoan

[pro″to-zo´an]

1. of or pertaining to protozoa.

2. an organism belonging to the Protozoa.

pro·to·zo·an

(prō'tō-zō'ăn),

1. A member of the phylum Protozoa. Synonym(s): protozoon

2. Relating to protozoa. Synonym(s): protozoal

protozoan

(prō′tə-zō′ən) also

protozoon

(-ŏn′)

n. pl. proto·zoans or proto·zoa (-zō′ə) also proto·zoons

Any of numerous chiefly single-celled eukaryotic organisms, most of which move about freely and ingest food, including the amoebas, ciliates, flagellates, and apicomplexans. Protozoans along with certain algae, oomycetes, and some other groups make up the protists.

pro′to·zo′an, pro′to·zo′al, pro′to·zo′ic adj.

pro·to·zo·an

(prō'tō-zō'ăn)

1. A member of the phylum Protozoa.
Synonym(s): protozoon.

2. Relating to protozoa.
Synonym(s): protozoal.

protozoan

any member of the phylum Protozoa (sometimes regarded as a subkingdom of the animal kingdom), including unicellular or acellular organisms. The members of the group feed as HOLOPHYTES, SAPROPHYTES or in a HOLOZOIC manner, move by means of FLAGELLA, CILIA or PSEUDOPODIA, and reproduce by FISSION or CONJUGATION.

Protozoan (plural, protozoa)

A single-celled, usually microscopic organism, such as B. coli, that is eukaryotic and, therefore, different from bacteria (prokaryotic).

Mentioned in: AIDS, Amebiasis, Antihelminthic Drugs, Balantidiasis, Dysentery, Pneumocystis Pneumonia, Toxoplasmosis, Trichomoniasis

References in periodicals archive ?

A survey of intestinal protozoan and helminth parasites in Karachi.

Incidence of Tapeworm Infection in Human Population of Swat, Pakistan: An Occupation Based Study

KEY WORDS: Endo-parasites, Prevalence, Vicinity, protozoan parasites, Helminth parasites, Hypoproteinaemia, Mortality, Growth, Grazing, Pasture

PREVALENCE OF ENDO PARASITES IN DOMESTIC ANIMALS IN THE VICINITY OF TANDOJAM

Concerning protozoan parasites, recent research indicates that ultraviolet light will inactivate Giardia or Cryptosporidium.

Antiparasitic and antibacterial activities of some chemical compounds against contaminated-water of Rafha City, Northern Borders, Saudi Arabia

We believed that this is probably due to the more accelerated metabolism of the protozoans in P2 due to higher water temperatures.

The importance of protozoan bacterivory in a subtropical environment (Lobo-Broa Reservoir, SP, Brazil)/A importancia da bacterivoria por protozoarios em um ambiente subtropical (Reservatorio do Lobo-Broa, SP, Brasil)

Entamoeba coli and Endolimax nana were the most commonly detected protozoan parasites, while Isospora, Cryptosporidia and other Coccidia species were less common (Table I).

Intestinal parasitic infections in adult patients in KwaZulu-Natal

There were ten species of parasites infecting the different organs of the fish samples, namely Protozoans: Oodinium pilluris (egg), Chilodonella sp., Coccidia sp., and Cryptobia sp.; Nematodes: Capillaria sp., Procamallanus sp., Spirocamallanus sp., and Camallanus sp.; Cestode: Hymenolypis nana; and Acanthocephala: Acanthocephalus sp.

Ectoparasites and endoparasites among Oreochormis Niloticus (tilapia)

Occurrence of epizoic and parasitic protozoans on Calanoida in the Southern Baltic.

Detrimental effect of peritrich ciliates (Epistylis sp.) as epibionts on the survival of the copepod Acartia bifilosa/Aerjalalise Acartia bifilosa isenditel esinevate ripsloomadest epibiontide (Epistylis sp.) kahjustav moju

The ciliate protozoan, Nyctotherus cordiformis, is a cosmopolitan parasite of frogs and toads and, while it is not surprising that S.

Endoparasites of Hurter's spadefoot, Scaphiopus hurterii and plains spadefoot, Spea bombifrons (anura: Scaphiopodidae), from southern Oklahoma

The order of their divergence is still uncertain, but is important in relation to the origin of the trans-splicing that characterizes nuclear genes in Euglenozoa, and stands in contrast with the cis-splicing of Percolozoa and the nine higher protozoan phyla.

Zooflagellate phylogeny and the systematics of protozoa

Indirect effects in each of these two-consumer food webs were produced by strong competitive interactions between pairs of protozoans. There was a clear dominance hierarchy among the three protists.

Integrating bacteria into food webs: studies with Sarracenia purpurea inquilines

Protozoans engulf their prey and incorporate it into a food vacuole within the cell where it is subjected to harsh chemical treatment involving digestive enzymes and acidic conditions.

Protozoan grazers: they may influence the biological availability of iron to phytoplankton

The 24 following chapters, ranging from the protozoans to the pelecypods, provide succinct reviews of the various groups' general characteristics, historical notes on early studies of them, foods and feeding, biology, general ecology, reproduction, dispersal and geographical distribution, collecting and preserving, culture (where appropriate), taxonomy, and much more.