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Sex differences in oxidative stress responses of tropical topshells (Trochus histrio) to increased temperature and high pCO2
- Source :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Publication Year :
- 2018
- Publisher :
- Elsevier, 2018.
-
Abstract
- Given scarcity of knowledge on gender ecophysiological responses of tropical marine organisms to global climate change, the major aim of this research was to investigate potential sex differences in oxidative status of topshell Trochus histrio, after a combined exposure to increased temperature and pCO2. Lipid peroxidation, heat-shock response and antioxidant enzymatic activities were evaluated. Lipid peroxidation varied differently between sexes, with males undergoing cellular damage under high pCO2, which was elevated temperature-counteracted. Heat shock response was thermo- and sex-regulated, with males exhibiting significantly higher heat shock proteins production than females. Catalase activity increased with temperature and was exacerbated in combination with hypercapnia, being highest in females, while glutathione S-transferases activity peaked in males. These results clearly support the existence of distinct physiological strategies to cope oxidative stress between sexes, apparently more efficient in females, and also reinforce for the need of encompassing sex as meaningful variable in future biomarker studies.
- Subjects :
- Ocean warming and acidification
Antioxidant
010504 meteorology & atmospheric sciences
medicine.medical_treatment
Lipid peroxidation
Physiology
Oxidative phosphorylation
010501 environmental sciences
Aquatic Science
Oceanography
medicine.disease_cause
01 natural sciences
chemistry.chemical_compound
Trochus histrio
Heat shock protein
medicine
Gender differences
Heat shock
0105 earth and related environmental sciences
Heat shock response
biology
Glutathione
Pollution
chemistry
Catalase
biology.protein
Antioxidant enzymes
Oxidative stress
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Repositório Científico de Acesso Aberto de Portugal, Repositório Científico de Acesso Aberto de Portugal (RCAAP), instacron:RCAAP
- Accession number :
- edsair.doi.dedup.....238d04b49eb7fa30fbd1d43b11004939