RT info:eu-repo/semantics/article
T1 Intracellular changes in Ca2 +, K+ and pH after sperm motility activation in the European eel (Anguilla anguilla): Preliminary results
A1 Gallego Albiach, Víctor
A1 Martínez Pastor, Felipe
A1 Mazzeo, Ilaria
A1 Sánchez Peñaranda, David
A1 Herráez Ortega, María Paz
A1 Asturiano Nemesio, Juan Francisco
A1 Pérez Igualada, Luz María
A2 Biologia Celular
K1 Veterinaria
K1 Sperm motility
K1 Ion flux
K1 Calcium
K1 Potassium
K1 pH
K1 Flow cytometry
AB Although it is widely accepted that osmolality and ion fluxes are the main factors triggering sperm motility in fish, a complex universal mechanism for sperm motility activation does not exist in fish, and studies of marine fish species are even more scarce. Therefore, the main goal of this study was to estimate the intracellular variations in the main ions involved in sperm activation for the first time in European eel, in order to provide additional new data about this little-known process.It was observed that levels of intracellular Ca2 + and K+ sperm ions increased significantly 30 s after the hyperosmotic shock compared to baseline levels, and remained at this level until 120 s post-activation. In contrast, the intracellular pH remained constant during the first 30 s, and decreased gradually at 60 and 120 s post-activation. Our data agree with the current main theory for explaining motility activation in marine fish, in which internal fluctuations of Ca2 + and K+ seem to participate in sperm activation. In addition, fluorescent images showed that both Ca2 + and K+ were concentrated in the apical area of the sperm head, which corresponds to the location of the eel sperm mitochondria, suggesting this organelle plays an important role in sperm motility activation.
PB Elsevier
YR 2019
FD 2019-05-17
LK http://hdl.handle.net/10612/10785
UL http://hdl.handle.net/10612/10785
NO Aquaculture, 2014,  vol. 418–419
NO P. 155-158
DS BULERIA. Repositorio Institucional de la Universidad de León
RD 19-abr-2024