... of the gymnotiform electric fish Sternopygus macrurus to trans-differentiate into electrocytes, the non-contractile electrogenic cells of the electric organ (EO), to investigate the mechanisms that regulate the skeletal muscle phenotype. In S. macrurus , mature electrocytes possess a phenotype that is intermediate...

... waveforms: (1) electrocyte geometry and channel repertoire; (2) the localization of synaptic contacts on electrocyte surfaces; and (3) electric activity of electromotor axons preceding the discharge of electrocytes. At the organismic level, three factors determine the integration of the EOD as a behavioral...

... (V 5 ). We found that: (a) the innervation pattern of the electrocytes, (b) the three earlier, neurally driven, EOD components (V 1 to V 3 ), and(c) their remnants after curarisation were almost identical in the two taxa. The equivalent electromotive forces of late components (V 4 and V 5 ) increased...

... regions with bilateral symmetry are described: (1)subopercular (medial and lateral columns of complex shaped electrocytes); (2)abdominal (medial and lateral columns of cuboidal and fusiform electrocytes);and (3) main [four columns, one dorso-lateral (containing fusiform electrocytes) and three medial...

... by Company of Biologists 1999 Alves-Gomes and Hopkins (1997) and Hopkins (1999) suggest that the reversions from type P a (anterior innervation) electrocytes to NP p (posterior innervation) electrocytes within the genus Brienomyrus might have evolved by paedomorphosis – the reversion...