Organization of the stalk system on electrocytes in mormyrid weakly electric fish Campylomormyrus compressirostris.

ABSTRACT: The adult electric organ in weakly electric mormyrid fish consists of action-potential-generating electrocytes, structurally and functionally modified skeletal muscle cells. The electrocytes have a disc-shaped portion and, on one of its sides, numerous thin processes, termed stalklets. These unite to stalks leading to a single main stalk that carries the innervation site. Here, we describe the 3-dimensional layout of the stalklet/stalk system in adult Campylomormyrus compressirostris by differential interference contrast microscopy and confocal fluorescence microscopy. Using antibodies against Na⁺/K⁺-ATPase α-subunit and plasma membrane Ca²⁺-ATPase, we show that these ion pumps are differentially distributed over the stalklet/stalk system, with plasma membr

SUBMITTER: Baumann O 

PROVIDER: S-EPMC11787269 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature