Trans-generational physiological condition of embryos is conditioned by maternal thermal stress in Octopus maya
Por:
Dominguez-Castanedo, Omar, Palomino-Cruz, Daniela, Mascaro, Maite, Rodriguez-Fuentes, Gabriela, Juarez, Oscar E., Galindo-Sanchez, Clara E., Caamal-Monsreal, Claudia, Galindo Torres, Pavel, Diaz, Fernando, Rosas, Carlos
Publicada:
1 abr 2023
Resumen:
Anthropogenic global warming generates profound metabolic alterations in
marine ectotherm invertebrates capable of leading a wide range of these
species to extinction. To evaluate the cross-generational effect of
thermal stress on the cephalopod Octopus maya, groups of females were
exposed at 24 and 30 degrees C until spawn. After, embryos of each
female group were incubated at 24 and 30 degrees C allowing for
evaluating the transgenerational effects on embryos exposed to high and
low temperatures. We analyzed the morphology, oxygen consumption,
antioxidant mechanisms, and oxidative stress indicators of the embryos.
The results demonstrate that thermally stressed females produced smaller
eggs with lower yolk content as observed in nonthermally stressed
females. Also was observed that embryos from females acclimated at 30
degrees C had lower body weight and higher respiratory rates when
compared with nonthermal stressed females. Embryos from females
acclimated at 30 degrees C showed a collapse of the antioxidant defense
system measured as lower both catalase activity and total glutathione
concentrations. Additionally, glutathione-s transferase activity
increased in embryos incubated at 30 degrees C and in females maintained
at high temperatures in a clear deleterious and cross-generational
effect of thermal stress on this octopus species. No changes were
observed in the activity of B-esterases in octopus embryos linked with
the thermal stress of females. Embryos from thermally stressed females
had smaller sizes, less yolk, and higher metabolic rates. Additionally,
a collapse in the antioxidant defense system was observed indicating
they were unable to control the high load of ROS and oxidative damage,
which was partially acquired by maternal inheritance.
Filiaciones:
Dominguez-Castanedo, Omar:
Consejo Nacl Ciencia & Technol, Programa Posdoctorado, Mexico City, Mexico
Palomino-Cruz, Daniela:
Inst Tecnol Paz, Secretaria Educ Publ, La Paz, BCS, Mexico
Mascaro, Maite:
Univ Nacl Autonoma Mexico, Fac Ciencias, Unidad Multidisciplinaria Docencia Invest, Puerto Abrigo Sisal S-N Sisal, Sisal, Yucatan, Mexico
Rodriguez-Fuentes, Gabriela:
Univ Nacl Autonoma Mexico, Fac Quim, Unidad Quim Sisal, Puerto Abrigo Sisal S-N, Sisal, Yucatan, Mexico
Juarez, Oscar E.:
Baja California CICESE, Ctr Invest Cient & Educ Super Ensenada, Dept Biotecnol Marina, Lab Ecofisiol, Ensenada, Mexico
Galindo-Sanchez, Clara E.:
Baja California CICESE, Ctr Invest Cient & Educ Super Ensenada, Dept Biotecnol Marina, Lab Ecofisiol, Ensenada, Mexico
Caamal-Monsreal, Claudia:
Univ Nacl Autonoma Mexico, Fac Ciencias, Unidad Multidisciplinaria Docencia Invest, Puerto Abrigo Sisal S-N Sisal, Sisal, Yucatan, Mexico
Galindo Torres, Pavel:
Baja California CICESE, Ctr Invest Cient & Educ Super Ensenada, Dept Biotecnol Marina, Lab Ecofisiol, Ensenada, Mexico
Diaz, Fernando:
Baja California CICESE, Ctr Invest Cient & Educ Super Ensenada, Dept Biotecnol Marina, Lab Ecofisiol, Ensenada, Mexico
Rosas, Carlos:
Univ Nacl Autonoma Mexico, Fac Ciencias, Unidad Multidisciplinaria Docencia Invest, Puerto Abrigo Sisal S-N Sisal, Sisal, Yucatan, Mexico
hybrid, Green Submitted
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