title: [Differenciation of electroreceptors in Marcusenius sp. (Mormyrides) and Eigenmannia virescens (Gymnotides), electric fishes with weak discharges].
abstract: Having recently succeeded in breeding two species of weakly electric fish, Eigenmannia virescens and Marcusenius sp., the ontogeny of certain electroreceptors, the tuberous organs, of these fish was studied in detail. At 27 degrees C, eight day old larvae possess electroreceptors which are fully differentiated and appear to be functional. At this stage the larvae also show the first electric discharge.
mesh_terms: D000367:Age Factors; D000818:Animals; D002454:Cell Differentiation; D003593:Cytoplasm / Q000032:analysis; D004594:Electrophysiology; D005399:Fishes / Q000196:embryology*; D006003:Glycogen / Q000032:analysis; D012679:Sense Organs / Q000648:ultrastructure; D011984:Sensory Receptor Cells / Q000196:embryology* / Q000648:ultrastructure
chemical_list: D006003:Glycogen
vernacular_title: Sur la différenciation des électrorécepteurs chez Marcusenius sp. (Mormyrides) et Eigenmannia virescens (Gymnotides), poissons électriques à faible décharge