期刊
MARINE POLLUTION BULLETIN
卷 131, 期 -, 页码 252-259出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2018.04.031
关键词
Trochus histrio; Ocean warming and acidification; Gender differences; Heat shock response; Lipid peroxidation; Antioxidant enzymes
资金
- Portuguese Foundation for Science and Technology (FCT) through a project CLIMATROPH [EXPL/MAR-EST/1427/2013, FCOMP-01-0124-FEDER-041888]
- European Social Fund
- National funds of MEC
- FCT [SFRH/BPD/98590/2013, SFRH/BD/97070/2013]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/97070/2013, EXPL/MAR-EST/1427/2013] Funding Source: FCT
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 pCO(2). Lipid peroxidation, heat-shock response and antioxidant enzymatic activities were evaluated. Lipid peroxidation varied differently between sexes, with males undergoing cellular damage under high pCO(2), 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.
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