choanomastigote

choanomastigote
A term, in the series used to describe developmental stages of the parasitic flagellates, denoting the “barleycorn” form of the flagellate in the genus Crithidia characterized by a collarlike extension surrounding the anterior and through which the single flagellum emerges. SEE ALSO: amastigote, epimastigote, promastigote, trypomastigote. SYN: choanoflagellate, collared flagellate. [G. choane, a funnel, + mastix, whip]

* * *

cho·a·no·mas·ti·gote (ko″ə-no-masґtĭ-gōt) [choano- + Gr. mastix whip] a morphologic stage in the life cycle of some trypanosomatid protozoa; the kinetoplast and basal body are anterior to the nucleus and the flagellum emerges through a collarlike extension at the anterior end of the cell. Cf. amastigote, epimastigote, opisthomastigote, promastigote, and trypomastigote.

Medical dictionary. 2011.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Crithidia fasciculata — Crithidia Scientific classification Domain: Eukaryota (unranked): Excavata Phylum: Euglenozoa …   Wikipedia

  • amastigote — SYN: Leishman Donovan body. [G. a priv. + mastix, whip] * * * amas·ti·gote (ə masґtĭ gōt) [a 1 + Gr. mastix whip] a morphologic stage in the life cycle of some kinetoplastid protozoa; the oval or round cell has a nucleus,… …   Medical dictionary

  • choanoflagellate — SYN: choanomastigote …   Medical dictionary

  • Crithidia — A genus of asexual, monogenetic, insect parasitizing flagellates in the family Trypanosomatidae. [Mod. L., fr. G. krithidion, dim. of krithe, barley] * * * cri·thid·ia krə thid ē ə n 1) cap a genus of flagellates of the family Trypanosomatidae… …   Medical dictionary

  • crithidia — Former term for epimastigote. [Mod. L. fr. G. krithidion, dim. of krithe, barley] * * * cri·thid·ia krə thid ē ə n 1) cap a genus of flagellates of the family Trypanosomatidae that are exclusively parasites of invertebrates esp. in the digestive… …   Medical dictionary

  • epimastigote — Term replacing “crithidial stage,” to avoid confusion with the insect parasitizing flagellates of the genus Crithidia. In the e. stage the flagellum arises from the kinetoplast alongside the nucleus and emerges from the anterior end of the… …   Medical dictionary

  • flagellate — 1. Possessing one or more flagella. 2. Common name for a member of the class Mastigophora. collared f. SYN: choanomastigote. * * * fla·gel·late flaj ə lət, .lāt; flə jel ət adj 1 a) or flag·el·lat·ed …   Medical dictionary

  • opisthomastigote — Term now used instead of herpetomonad for the stage of development of certain insect and plant parasitizing flagellates to avoid confusion between the stage and the genus Herpetomonas. In this stage the flagellum arises from the kinetoplast… …   Medical dictionary

  • promastigote — Term now generally used instead of “leptomonad” or “leptomonad stage,” to avoid confusion with the flagellate genus Leptomonas. It denotes the flagellate stage of a trypanosomatid protozoan in which the flagellum arises from a kinetoplast in …   Medical dictionary

  • Trypanosomatidae — A protozoan family of hemoflagellates (order Kinetoplastida, class Zoomastigophorea, subphylum Mastigophora); asexual blood and/or tissue parasites of leeches, insects, and vertebrates and sap inhabitants of plants, characterized by a rounded or… …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”