an encysted zygote of sporozoan protozoans that undergoes sporogony to produce infective sporozoites
oocyst in American English
(ˈouəˌsɪst)
noun
Biology
the encysted zygotic stage in the life cycle of some sporozoans
Word origin
[1870–75; oo- + -cyst]This word is first recorded in the period 1870–75. Other words that entered Englishat around the same time include: billing, fifth wheel, linkage, onshore, washoutoo- is a combining form meaning “egg,” used in the formation of compound words. Otherwords that use the affix oo- include: ooblast, oogamete, oology, oophyte, oosphere
Examples of 'oocyst' in a sentence
oocyst
No oocyst residuum, but always a single polar body.
Ralph Lainson, Antonio Messias Costa, Jeffrey J. Shaw 1990, 'Eimeria species (Apicomplexa: Eimeriidae) of podocnemis expansa (Schweigger) and geochelonedenticulata (LINN.) from Amazonian Brazil (Reptilia: Chelonia)', Memórias do Instituto Oswaldo Cruz.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761990000400001. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Within each oocyst, this culminates in the generation of two sporocysts, each containing 4 sporozoites.
Heather M. Fritz, Kerry R. Buchholz, Xiucui Chen, Blythe Durbin-Johnson, David M.Rocke, Patricia A. Conrad, John C. Boothroyd 2012, 'Transcriptomic Analysis of Toxoplasma Development Reveals Many Novel Functions andStructures Specific to Sporozoites and Oocysts', PLoS ONE10.1371/journal.pone.0029998. Retrieved from PLOS CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The development of infected salivary glands was unrelated to oocyst production.
Mariana V. Tasón de Camargo, Rotfaut A. G. B. Cônsoli, Paul Williams, Antoniana U.Krettli 1983, 'Factors influencing the development of Plasmodium gallinaceum in Aedes fluviatilis',Memórias do Instituto Oswaldo Cruz.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761983000100010. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
They average 14.8 x 14.5 µm and have no micropyle, oocyst residuum or polar body.
Ralph Lainson 2003, 'Some coccidial parasites of the lizard Amphisbaena alba (Reptilia: Amphisbaenia: Amphisbaenidae)',Memórias do Instituto Oswaldo Cruz.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762003000700012. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Parasitological parameters (oocyst counts and species identification) were measured monthly.
Monita Vereecken, A. Lavazza, K. De Gussem, M. Chiari, C. Tittarelli, A. Zuffellato,Luc Maertens 2012, 'Activity of diclazuril against coccidiosis in growing rabbits: experimental and fieldexperiences', World Rabbit Sciencehttp://polipapers.upv.es/index.php/wrs/article/view/1232. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The micropyle, oocyst residuum and polar granule are absent.
Samira S.M. Gallo, Nicole B. Ederli, Bruno P. Berto, Francisco C.R. de Oliveira 2014, 'A new coccidian, Isospora rheae sp. nov. (Apicomplexa, Eimeriidae), from Rhea americana(Aves, Rheidae) from South America', International Journal for Parasitology: Parasites and Wildlifehttp://www.sciencedirect.com/science/article/pii/S2213224414000236. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
One week later, blood sampling, lesion scores, and cecal oocyst count were carried out.
Alexey Leon Gomel Bogado, João Luis Garcia, Patrícia Fernandes Nunes da Silva, MaraRegina Stipp Balarin, José da Silva Guimarães Junior 2010, 'Avaliação hematológica pós-desafio com cepa virulenta de Eimeria tenella em frangosde corte imunizados com cepa atenuada ou proteínas de esporozoítos de cepa homólogaPost-challenge hematological evaluation with virulent strain of Eimeria tenella inbroilers immunized with attenuated strain or sporozoite proteins from homologous strain',Revista Brasileira de Parasitologia Veterináriahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612010000100002. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Their intestinal oocyst counts and lesion scores were determined.
Luisa Rambozzi, Manuela Renna, Paolo Cornale, Giovanni Perona, Vanda Malfatto, AntonioMimosi 2012, 'Effect of the granulometric characteristics of monensin sodium on controlling experimentalcoccidiosis in broiler chickens Efeito das características granulométricas da monensinasódica no controle da coccidiose experimental em frangos de corte', Revista Brasileira de Parasitologia Veterináriahttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612012000100012. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)