[The development, structure and function of the mandibular glands of Blaberus craniifer burm. (Dictyoptera Blaberidae)].
The mandibular glands of Blaberus craniifer are examined by histochemical, electrophoretic, thin-layer chromatography and electron microscopical techniques. These glands are known to secrete a volatile aggregative pheromone. The gregarious behaviour increases during insect development and is maximal in imagos. Each gland is composed of a bundle of secretory cells with efferent ductules which arise in a common duct. Secretory cells contain a myeloid secretion more abundant in imagos than in larval stages. Histochemical and electrophoretic criteria show that the myeloid product is made up of a mixture of glycoproteins. A lipidic component is also present in the secretion; its ultrastructural localization remains to be elucidated. Cytological features are in agreement with the gregarious behaviour of cockroaches. Detailed structure and functional interpretation are also discussed.
D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D006023:Glycoproteins / Q000032:analysis; D006056:Golgi Apparatus / Q000648:ultrastructure; D007313:Insecta / Q000254:growth & development / Q000502:physiology / Q000648:ultrastructure*; D008055:Lipids / Q000032:analysis; D008928:Mitochondria / Q000648:ultrastructure; D009490:Neurosecretory Systems / Q000502:physiology / Q000648:ultrastructure*; D010675:Pheromones / Q000032:analysis / Q000378:metabolism
D006023:Glycoproteins; D008055:Lipids; D010675:Pheromones
Les glandes mandibulaires de Blaberus craniifer burm. (Dictyoptera, Blaberidae) developpement, structure et fonctionnement