Título:
Understanding daily rhythms in weakly electric fish: the role of melatonin on the electric behavior of Brachyhypopomus gauderio
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Autor:
Vázquez Cerdeiras, Juan Ignacio
Gascue Martínez, Valentina
Quintana, Laura
Migliaro González, Adriana
Gascue Martínez, Valentina
Quintana, Laura
Migliaro González, Adriana
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Tipo de documento:
Preprint
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Palabras clave:
Melatonin
Daily rhythms
Electric behavior
Neural Bases of Behavior
Pacemaker
Daily rhythms
Electric behavior
Neural Bases of Behavior
Pacemaker
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Año de publicación:
2022
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Resumen:
Living organisms display molecular, physiological and behavioral rhythms synchronized with natural environmental cycles. Understanding the interaction between environment, physiology and behavior requires taking into account the complexity of natural habitats and the diversity of behavioral and physiological adaptations. Brachyhypopomus gauderio is characterized by the emission of electric organ discharges (EOD), with a very stable rate modulated by social and environmental cues. The nocturnal arousal in B. gauderio coincides with a melatonin-dependent EOD rate increase. Here, we first show a daily cycle in both the EOD basal rate (EOD-BR) and EOD-BR variability of B. gauderio in nature. We approached the understanding of the role of melatonin in this natural behavior through both behavioral pharmacology and in vitro assays. We report, for the first time in gymnotiformes, a direct effect of melatonin on the pacemaker nucleus (PN) in in vitro preparation. Melatonin treatment lowered EOD-BR in freely moving fish and PN basal rate, while increasing the variability of both. These results show that melatonin plays a key role in modulating the electric behavior of B. gauderio through its effect on rate and variability, both of which must be under a tight temporal regulation to prepare the animal for the challenging nocturnal environment.
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Publicado también en: Journal of Comparative Physiology A, 2023, 210:7-18. DOI: 10.1007/s00359-023-01626-w
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Research Square
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ANII: FCE_3_126178
Citación:
Vázquez Cerdeiras, J, Gascue Martínez, V, Quintana, L [y otro autor]. "Understanding daily rhythms in weakly electric fish: the role of melatonin on the electric behavior of Brachyhypopomus gauderio" [Preprint]. Publicado en: Research Square. 2022. DOI: 10.21203/rs.3.rs-2310409/v1.
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2693-5015
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Licencia Creative Commons Atribución (CC - By 4.0)
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| Ficheros | Descripción | Tamaño | Formato | ||
|---|---|---|---|---|---|
| pp_10.1007s00359-023-01626-w.pdf | — | 1.53 MB | Adobe PDF |
Licencia Creative Commons:
Excepto donde se indique lo contrario, la licencia de este ítem se describe como Licencia Creative Commons Atribución (CC - By 4.0)