Diurnal and seasonal hsp70 gene expression in a cryptic reef fish, the bluebanded goby Lythrypnus dalli (Gilbert 1890)

Autores/as

  • Priscila Conde-Guerrero
  • Tania Zenteno-Savín Centro de Investigaciones Biológicas del Noroeste, S.C. https://orcid.org/0000-0002-4080-9467
  • Crisalejandra Rivera-Pérez
  • Fausto Valenzuela-Quiñonez
  • Juan Antonio De Anda-Montañez

DOI:

https://doi.org/10.18633/biotecnia.v23i2.1410

Palabras clave:

ritmo circadiano, pez arrecifal críptico, proteína de choque térmico 70, Lythrypnus dalli, temperatura

Resumen

Las respuestas fisiológicas de los organismos marinos son influenciadas por variaciones ambientales, particularmente en hábitats dinámicos. Éstas pueden ser a escala diurna o estacional y requieren respuestas que, a nivel molecular, son facilitadas por inducción de expresión génica. Los ritmos circadianos permiten ajustar cambios ambientales recurrentes y sincronizarlos con procesos fisiológicos. El incremento en la expresión de hsp70 es una estrategia para enfrentar cambios térmicos y otros estresores, confiriendo termotolerancia que cambia periódicamente. El objetivo de este estudio fue analizar si la variabilidad de factores exógenos (temperatura, oxígeno disuelto, salinidad) en escalas diurna o estacional afecta la expresión de hsp70 en peces crípticos en su medio natural. El modelo de estudio fue Lythrypnus dalli, un pez críptico arrecifal que habita el Golfo de California. Los parámetros físicos variaron estacionalmente; la temperatura aumentó 6°C durante la temporada cálida, salinidad y oxígeno disuelto permanecieron constantes. Se observaron cambios mínimos (±1°C) en temperatura en el ciclo diurno. Los niveles de expresión de hsp70 aumentaron durante la estación cálida (p < 0.05). No se observaron diferencias en hsp70 durante el ciclo diurno (p > 0,05). L. dalli aparentemente ha desarrollado plasticidad fenotípica para enfrentar la variabilidad ambiental diurna y estacional.

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Publicado

2021-06-16

Cómo citar

Conde-Guerrero, P., Zenteno-Savín, T., Rivera-Pérez, C., Valenzuela-Quiñonez, F., & De Anda-Montañez, J. A. (2021). Diurnal and seasonal hsp70 gene expression in a cryptic reef fish, the bluebanded goby Lythrypnus dalli (Gilbert 1890). Biotecnia, 23(2). https://doi.org/10.18633/biotecnia.v23i2.1410

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