Ovariole

An ovariole is one of the tubes of which the ovaries of most insects are composed. Typically an insect will have two ovaries. The constituent ovarioles lead to two oviducts, which converge into a single oviduct. The ovarioles are composed of a germarium and a set of ovarial follicles.

In D. melanogaster

In Drosophila melanogaster, there are 16 ovarioles per ovar and, there are 2 ovaries. The most anterior portion of the ovariole consist of the germarium, the location of germ line stem cells (GSC's), terminal filaments, cap cells and intergermarial sheath cells. The GSC's are what later on give rise to egg's. There are 14 distinct stages in the development of oocyte, and the progression in development occurs anterior to posterior along the ovariole. At the end of stage 14, the egg passes through the lateral oviduct before entering the common oviduct and then exiting via the uterus.

 This article incorporates text from the public domain 1913 Webster's Dictionary.

This insect anatomy-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Insect anatomy Insect anatomy stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем написать курсовую Ovarian torsion Transplantable organs and tissues Look at other dictionaries: Ovariole — O*va ri*ole, n. (Zo[ o]l.) One of the tubes of which the ovaries of most insects are composed. [1913 Webster] …   The Collaborative International Dictionary of English ovariole — ovariole. См. овариола. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь. ovariole — ● ovariole nom féminin Élément constitutif de l ovaire chez les insectes …   Encyclopédie Universelle Ovariole — L ovariole est un filament comprenant un succession d ovocytes à différents stades de développement. Il se rapporte au développement des insectes. Portail de l’entomologie Catégorie : Physiologie de l insecte …   Wikipédia en Français ovariole — noun Etymology: New Latin *ovariolum, diminutive of ovarium Date: 1877 one of the tubes of which the ovaries of most insects are composed …   New Collegiate Dictionary ovariole — n. [L. dim. ovum, egg] (ARTHROPODA: Insecta) The tubular division of a female ovary where the oocytes develop …   Dictionary of invertebrate zoology ovariole — /oh vair ee ohl /, n. Entomol. any of several tubules that compose an insect ovary. [1875 80; < NL ovari(um) OVARY + L ol OLE1] * * * …   Universalium ovariole — ovar·i·ole …   English syllables ovariole — ōˈva(a)rēˌōl noun ( s) Etymology: ovari + ole : one of the tubes of which the ovaries of most insects are composed …   Useful english dictionary teletrophic ovariole — (ARTHROPODA: Insecta) An ovariole in which all the trophocytes are terminal in the germarium, and connect to the egg by a slender trophic chord; acroptrophic ovariole; telotrophic egg tube; see polytrophic ovariole …   Dictionary of invertebrate zoology 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”