title: [Ultrastructural development of the corpora allata during the last larval stage of Choleva angustata Fab. (Coleoptera Catopidae of the subfamily Catopinae)].
abstract: The ultrastructure of the corpora allata of the last larvar instar of Choleva angustata Fab. was studied. In normal development a complex pattern of changes in the ultrastructure of the corpora allata occurs in relation to the larval age in the active and inactive stages. Towards the end of the active stage, a drastic change occurs, involving an increase in number and volume of vacuoles which fill up the cells. During the fasting stage (in the nymphal clay case) the smooth endoplasmic reticulum disappears while the rough endoplasmic reticulum forms long and sinuous cisternae. Towards the end of the instar, numerous vacuoles appear.
mesh_terms: D000367:Age Factors; D000818:Animals; D001517:Coleoptera / Q000502:physiology*; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D005247:Feeding Behavior; D007814:Larva; D008675:Metamorphosis, Biological; D008854:Microscopy, Electron; D008928:Mitochondria / Q000648:ultrastructure; D009490:Neurosecretory Systems / Q000502:physiology* / Q000648:ultrastructure; D011679:Pupa; D014617:Vacuoles / Q000648:ultrastructure
vernacular_title: Evolution ultrastructurale des corps allates au cours du dernier stade larvaire chez Choleva angustata Fab. (Coléoptéres Catopidae de la sous-famille des Catopinae)