2024-03-29T11:46:59Zhttp://buleria.unileon.es/oai/requestoai:buleria.unileon.es:10612/107852020-12-10T09:03:12Zcom_10612_17col_10612_18
BULERIA. Repositorio Institucional de la Universidad de León
author
Gallego Albiach, Víctor
author
Martínez Pastor, Felipe
author
Mazzeo, Ilaria
author
Sánchez Peñaranda, David
author
Herráez Ortega, María Paz
author
Asturiano Nemesio, Juan Francisco
author
Pérez Igualada, Luz María
other
Biologia Celular
2019-05-17T13:21:01Z
2019-05-17T13:21:01Z
2019-05-17
Aquaculture, 2014, vol. 418–419
https://www.sciencedirect.com/science/article/pii/S0044848613005449#!
http://hdl.handle.net/10612/10785
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.
Veterinaria
Intracellular changes in Ca2 +, K+ and pH after sperm motility activation in the European eel (Anguilla anguilla): Preliminary results
info:eu-repo/semantics/article
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URL
https://buleria.unileon.es/bitstream/10612/10785/1/71%20%20Intracellular%20changes%20in%20Ca2%2b%2c%20K%2b%20Aquaculture_418-419_0155_2014.pdf
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71 Intracellular changes in Ca2+, K+ Aquaculture_418-419_0155_2014.pdf
URL
https://buleria.unileon.es/bitstream/10612/10785/3/71%20%20Intracellular%20changes%20in%20Ca2%2b%2c%20K%2b%20Aquaculture_418-419_0155_2014.pdf.txt
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71 Intracellular changes in Ca2+, K+ Aquaculture_418-419_0155_2014.pdf.txt