endodyogeny

endodyogeny
A process of asexual development seen among certain coccidia, such as Toxoplasma and Frenkelia, in which no separate nuclear division occurs, as in schizogony; the two daughters develop internally within the parent, without nuclear conjugation. [endo- + G. dys, two, + genesis, creation]

* * *

en·do·dy·og·e·ny (en″do-di-ojґə-ne) reproduction by the formation of two daughter cells within the wall of the mother cell (internal budding), the progeny being released by rupture of the mother cell, as in the protozoan Toxoplasma.

Medical dictionary. 2011.

См. также в других словарях:

  • Endodyogeny — is a process of asexual reproduction, favoured by parasitic protozoa such as Toxoplasma gondii . It involves an unusual process in which two daughter cells are produced inside a mother cell, which is then consumed by the offspring prior to their… …   Wikipedia

  • endodyogeny — n. [Gr. endon, within; dyas, two; genos, offspring] The formation of only two daughter cells surrounded by their own membrane, while still in the mother cell; see endopolyogeny …   Dictionary of invertebrate zoology

  • Apicomplexa lifecycle stages — Cellular structure of a typical, generalised Apicomplexan: 1 polar ring, 2 conoid, 3 micronemes, 4 rhoptries, 5 nucleus, 6 nucleolus, 7 mitochondria, 8 posterior ring, 9 alveoli, 10 golgi apparatus, 11 micropore. Apicomplexa life cycle stages… …   Wikipedia

  • Tachyzoite — is an asexual stage of rapid growth in a number of microorganisms, with many being directly responsible for parasitic diseases. Tachyzoites are motile forms of coccidians that form tissue cysts, such as toxoplasmosis and sarcocystis. Tachyzoites… …   Wikipedia

  • endopolyogeny — n. [Gr. endon, within; polys, many; genos, offspring] Formation of many daughter cells, each surrounded by its own membrane, while still in the mother cell; see endodyogeny …   Dictionary of invertebrate zoology

  • Apicomplexa — A phylum of the subkingdom Protozoa, which includes the class Sporozoea and the subclasses Coccidia and Piroplasmia, and is characterized by the presence of an apical complex. [L. apex, pl. apicis, tip, summit, + complexus, woven together] * * *… …   Medical dictionary

  • endodyocyte — 1. A trophozoite formed by endodyogeny. 2. SYN: merozoite. [endo + G. dys, two, + kytos, cell] …   Medical dictionary

  • endopolygeny — Asexual reproduction in which more than two offspring are formed within the parent organism and in which two or possibly more nuclear divisions occur before merozoite formation begins; a form of internal budding observed in Toxoplasma gondii. Cf …   Medical dictionary

  • Gregarina — A genus of sporozoan protozoa (phylum Apicomplexa, subclass Gregarinia), parasitic in annelids and arthropods, and lacking schizogony and endodyogeny in the life cycle. [L. gregarius, gregarious, fr. grex (greg ), a flock] …   Medical dictionary

  • merozoite — The motile infective stage of sporozoan protozoa that results from schizogony or a similar type of asexual reproduction; e.g., endodyogeny or endopolygeny. Merozoites form at the surface of sch …   Medical dictionary


Поделиться ссылкой на выделенное

Прямая ссылка:
Нажмите правой клавишей мыши и выберите «Копировать ссылку»