Maternal temperature stress modulates acclimation and thermal biology in Octopus maya (Cephalopoda: Octopodidae) juvenile progeny

Autor: Jorge Arturo Vargas-Abúndez, Alejandra Plata-Díaz, Maite Mascaró, Claudia Caamal-Monsreal, Gabriela Rodríguez-Fuentes, Alejandro Jiménez-Be, Carlos Rosas
Rok vydání: 2023
Předmět:
Zdroj: Marine Biology. 170
ISSN: 1432-1793
0025-3162
DOI: 10.1007/s00227-023-04200-9
Popis: High temperatures alter the physiological condition of Octopus maya embryos, juveniles, and adults, and the time of exposure could have a key role in their thermal tolerance. The present study evaluates the effects of temperature and exposure time on octopus juveniles obtained from a thermally stressed female and a control female when exposed to optimal (25 °C) and high temperatures (30 °C) for 20 and 30 days, respectively. The results showed a transgenerational temperature effect that was expressed with low survival, depressed routine resting and high metabolic rates. Moreover, a collapse of antioxidant defense enzymes and high levels of oxidative damage products were detected in juveniles from thermally stressed females. Stress was lethal for animals acclimated at 30 °C, while the performance of juveniles acclimated at optimal temperature (25 °C) was conditioned by high oxidative stress levels and a reduction of the high metabolic rate (HMR) even after 30 days of experiment. In contrast, juveniles from the non-thermally stressed female had an optimal performance when acclimated at 25 °C but at 30 °C, they had a comparatively higher HMR during the first 8 days. These results suggest energy surplus in those animals to escape from warming scenarios before experiencing oxidative damage accumulation. Further studies should confirm if epigenetic alterations could be involved.
Databáze: OpenAIRE
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